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product structure silicon monolithic integrated circuit this product is not designed protection against radioactive rays . 1 / 26 tsz02201 - 0w1w0c500020 - 1 - 2 ? 20 1 5 rohm co., ltd. all rights reserved. 04 . dec . 2015 rev.004 tsz22111 ? ? advanced 12 channel constant current led driver ic b d 18378efv - m general description the bd18378efv - m is a serial input controlled constant current led driver with 8 v output rating. 6 bit current calibration is available for each output while a selected pwm input performs dimming on the corresponding output. the bd18378efv - m is able to perform diagnostic (open / short / temperature) checks to detect led failure and over temperature on chip. fault detection is performed also during led deactivated state. the settings of all internal registers can be read out to verify written information at any time. features ? aec - q100 qualified ( no t e 1 ) ? current capability: 50ma per output channel. ? 4 - line spi control. ? external resistor current setting . ? limp home capability. ? pwm dimming 0. 2 - 99.2% at 200hz ? diagnostic of all pwm inputs. ? programmable output mapping to each pwm input. ? 6 bit led brightness adjustment on each channel. ? diagnostic output on led open and short for each channel during pwm on & off time. ? true led voltage measurement. ? over temperature protection and thermal feedback. ? open drain fault indicator. ? read - back of all register settings. ? outputs can be connected in parallel to achieve more than 50ma into the load. ? slew rate limited switching reduces radiated noise (emi). ? daisy chain compatible. ( note1 : operating temperature grade 2 ) key specification s ? input voltage range: 3v to 5.5v ? output voltage range: 0.5 v to 8v ? output current range: 10ma to 50ma ? output current a ccuracy 3.5% ? maximum clock frequency: 1.25mhz ? operating current: 4ma (typ.) ? operating temperature range: - 40 c to +105 c pac kage l(typ.) x w(typ.) x h(max.) htssop - b28 9.70mm x 6.40mm x 1.00mm applications ? automotive illumination & ambient light ? consumer electronics illumination typical application circuit diagram figure 1 . typical application diagram t o c o n t r o l l e r b d 1 8 3 7 8 e f v - m h e a t s i n k a g n d i r e f e r r v c c p g n d v l e d 8 v m a x 5 . 5 v m a x v c c c i n r e x t c l e d p w m 0 1 2 3 4 5 s d i c l k s d o l a t c h c h a n n e l 0 1 2 3 4 1 0 5 6 7 8 9 1 1 s e n s e r p l e d s q u i e t g r o u n d l i n e n o i s y g r o u n d l i n e t o c o n t r o l l e r
2 / 26 b d 18378efv - m tsz02201 - 0w1w0c500020 - 1 - 2 ? 20 1 5 rohm co., ltd. all rights reserved. www.rohm.co m tsz22111 ? ? 04 . dec . 2015 rev.004 pin configuration figure 2 . pin configuration pin descriptio n pin no. symbol function pin no. symbol function 1 agnd analog ground terminal 28 pgnd power ground terminal 2 iref current setting terminal 27 vcc power supply terminal 3 err open drain fault indicator 26 sdo serial data output terminal 4 pwm0 pwm 0 input terminal 25 pwm5 pwm 5 input terminal 5 ch0 output channel 0 24 ch11 output channel 11 6 ch1 output channel 1 23 ch10 output channel 10 7 ch2 output channel 2 22 ch9 output channel 9 8 ch3 output channel 3 21 ch8 output channel 8 9 ch4 output channel 4 20 ch7 output channel 7 10 ch5 output channel 5 19 ch6 output channel 6 11 pwm1 pwm 1 input terminal 18 sense led supply sensing terminal 12 pwm2 pwm 2 input terminal 17 pwm4 pwm 4 input terminal 13 sdi serial data input terminal 16 pwm3 pwm 3 input terminal 14 clk serial communication clock 15 latch latch signal input terminal htssop - b28 (top view) 28 27 26 25 24 23 22 21 20 19 18 17 16 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 heat sink bottom side agnd iref err pwm0 ch0 ch1 ch2 ch3 ch4 ch5 pwm1 pwm2 sdi clk pgnd vcc sdo pwm5 ch11 ch10 ch9 ch8 ch7 ch6 sense pwm4 pwm3 latch
3 / 26 b d 18378efv - m tsz02201 - 0w1w0c500020 - 1 - 2 ? 20 1 5 rohm co., ltd. all rights reserved. www.rohm.co m tsz22111 ? ? 04 . dec . 2015 rev.004 absolute maximum ratings item symbol absolute maximum value unit power supply voltage (pin no: 27) v cc 7 v output voltage (pin no: 5 to 9, 19 to 24 ) v dmax 10 v input voltage (pin no: 4,11 to 17, 25 ) v in - 0.3 to v cc v open drain fault indicator(pin no: 3) v err 7 v operating temperature range t opr - 40 to +105 c storage temperature range t stg - 55 to +150 c junction temperature t jmax 150 c led voltage (pin no: 18) v sense 10 v electrostatic - discharge capability human body model esd hbm 2000 v electrostatic - discharge capability machine model esd mm 200 v pwm duty cycle pwm 100 % recommended operating rating s *1 check power de - rating curves of the package before applying maximum values. *2 99.2% max and 0. 2 % min duty cycle at a 200hz pwm frequency is recommended in order to have complete diagnostic capability; please note that the pwm signal is active low. *3 please make sure the v sense voltage is always connected to the leds supply voltage - at a higher potential than v d . (see also the i/o equival ent circuits) thermal information *4 item symbol value unit junction to ambient thermal resistance (1 layer board) ? ja 107 c/w junction to top thermal characterization parameter (1 layer board) jt 6 c/w junction to ambient thermal resistance (4 layer board) ? ja 26 c/w junction to top thermal characterization parameter (4 layer board) jt 3 c/w junction to case thermal resistance ? jc - top 13 c/w junction to case thermal resistance ? jc - bot 4 c/w *4 measured as per jedec standard board as per jesd51 - 3/ - 5/ - 7 environment as per jesd51 - 2a the above mentioned data is measurement data to be used only as r eference not guaranteed values. item symbol standard value unit min typ max power supply voltage v cc 3.0 - 5.5 v drive current at full brightness *1 i d 10 30 50 ma output voltage* 1 v d - - 8 v led voltage *1 * 3 v sense - - 8 v open drain fault indicator v err - - 5.5 v pwm duty cycle *2 pwm 0. 2 - 99.2 %
4 / 26 b d 18378efv - m tsz02201 - 0w1w0c500020 - 1 - 2 ? 20 1 5 rohm co., ltd. all rights reserved. www.rohm.co m tsz22111 ? ? 04 . dec . 2015 rev.004 block diagra m figure 3 . block diagram description of blocks functionality ? constant current driver the chip uses a constant current output driver with a provision for individual calibration per channel. the constant current i d is derived from referring an internal reference voltage over the external resistor r ext . the resistor is chosen to set the reference current i ref . the global reference current, i ref , is mirrored into the channel current to generate a local reference. the output device is scaled to give 6 bit output range. ? ? = ??? ? ? ??? ? ??? ? ( ??? + ? ) ?? where v ref is the reference voltage measured at the iref pin. output currents are timed by the assigned pwm input. the drivers have a low leakage current to keep the led in firm off condition when the channel is inactive. full scale current setting example table: r ext i dmax 12k? 20k? 30k? 60k? ? active pull up circuit a pull up current can be activated t o avoid led flicker during activated and deactivated state. this can be done by changing the corresponding bit in the en_pull_up@on and en_pull_up@off registers. please see also the description of the write_en_pull_up commands. s h i f t r e g i s t e r c o n t r o l l o g i c p w m m a p i n g / p w m f a u l t d e t e c t i o n 1 6 o v e r t e m p e r a t u r e l e d o p e n / s h o r t s h o r t t o g n d p u l l u p i r e f d i a g / c u r r e n t m i r r o r u v l o b a n d g a p w e a k l e d s u p p l y 4 8 x 1 2 s d i c l k l a t c h s d o p g n d i r e f c h 0 - 1 1 s e n s e v c c p w m 0 - 5 e r r i r e f c a l p w m 1 2 1 2 6 7 2 a g n d c o n s t a n t c u r r e n t d r i v e r
5 / 26 b d 18378efv - m tsz02201 - 0w1w0c500020 - 1 - 2 ? 20 1 5 rohm co., ltd. all rights reserved. www.rohm.co m tsz22111 ? ? 04 . dec . 2015 rev.004 ? protection circ uitry and diagnostic o led short detection a short event i s de t e c t ed w h en the v o l t a g e across the led falls below the short detection threshold v scth . t he s h o r t de t e c t ion c u rren t w hi c h is f lo w i n g during led a c t i v e (pwm =low ), w i l l c au s e a typical o u t p u t c urre n t o ff s e t of 20 a. a ft er a d e t e c t ed l ed s h ort event, t h e c or r e s pon d ing b i t of t h e gen_ s h o r t de t e c t ion re g i s t er a nd t h e a n y_s h o r t_open _flag from the status register re m a i n h i gh u n t i l c l eared b y t he c on t rol l er. the short detection is also performed, when the led is not activated, using small sink currents for small time intervals (20us) to avoid led flicker. in order for the detection to be available at non - activated led state the pwm duty cycle must be <99.2% at a frequency of 200hz . o led open detection during an open event the output device will be fully on, pulling v dx low. an open event is detected when voltage v dx at the output pin falls below v oth . t he open de t e c t ion c u rren t , i pulldown w hi c h is f lo w i n g during led a c t i v e (pwm = low ), w i l l c au s e a typical o u t p u t c urre n t o ff s e t of 20 a. after a led open event has been detected the corresponding bit of the gen_open detection register and any_short_open _flag from the status register remain high until cleared by the controller. the open detection is also performed, when the led is not activated, using small sink currents for small time intervals (20us) to avoid led flicker. in order for the detection to be available at non - activated led state the pwm duty cycle must be <99.2% at a frequency of 200hz . note: in order to distinguish between diagnostics (led short detection and led open detection ) at on and off, the corresponding detection must be enabled and corresponding state of the channel must be checked (enabled/disabled). o short to ground detection the chip can perform output short to ground diagnosis during non - activated led state. after led short and open at channel off diagnosis, a short to ground can be also detected. in order for the detection to be available at non - activated led state the pwm d uty cycle must be <99.2% at a frequency of 200hz. the diagnostic is activated or deactivated by the en_short_to_gnd register. after an output short to ground has been detected the corresponding bit of the short_to_gnd detection register and any_short_to_gnd _flag from the status register remain high until cleared by the controller. note: in case both the open detection and short to gnd detection are active at the same time and the voltage v dx at the output pin falls below v sg th also the corre sponding bit of the gen_open detection register and any_short_open _flag from the status register remain high until cleared by the controller. figure 4 . diagnostic diagram o i ref fault detection (limp home functionality) the chip can perform i ref short and open diagnostic on the external resistor. in case of an error the rext_fault flag is set and latched and an internal current reference is used to set a typical output current of i ref_lh . if the fault condition is removed the chip can be reset to the normal operating state by a por event. e n _ c h a n n e l p w m d i a g n o s t i c c h a n n e l a c t i v e c h a n n e l n o t a c t i v e p w m a c t i v e p w m n o t a c t i v e t d i a g _ o f f 2 0 u s s h o r t / o p e n @ o n p u l l _ u p @ o n p u l l _ u p @ o f f s h o r t / o p e n @ o f f s h o r t t o g n d
6 / 26 b d 18378efv - m tsz02201 - 0w1w0c500020 - 1 - 2 ? 20 1 5 rohm co., ltd. all rights reserved. www.rohm.co m tsz22111 ? ? 04 . dec . 2015 rev.004 o pwm fault detection pwm fault diagnostic can be performed at startup to test for wire connectivity. the chip is initialized with a pwm fault condition that changes to pwm_ok immediately after the first falling edge on the pwm input(s). o uvlo under voltage lockout by monitor ing the vcc pin an uvlo event can be detected. i f vcc is below uvlo_l then the chip is turned off. if the vcc voltage increases over the uvlo_h threshold then the chip is turned back on. o weak led supply voltage detection by monitoring vsense pin, a low led supply voltage can be detected. after a weak led supply voltage has been detected a corresponding one bit register flag is set and remains high until cleared by the controller. the detection has its own status bit and is mapped to open drain fault indi cator. note that this circuit is always active. a masking command that can be locked and read back is implemented. figure 5 . startup diagram note : in case ii when the mask_wls will be activated a weak led supply event will be signaled to the internal logic. this is because the detection circuit itself is not disabled by the mask_wls command but only the diagnostic is masked. o open drain fault indicator an emergency warning pin is available (err) to signal to the controller the most important faults of the system. the err output is activated (active=low) when a fault flag in the status register or a flag in the unlock register is set. the flags can be masked using the write_en_err_pin command. the content of the en_err_pin register shows the flags that will activate the open drain fault indicator (err). the picture below shows the err pin functionality: figure 6 . open drain fault indicator (err) e r r a l l s t a t u s a n d u n l o c k b i t s v l e d v c c u v l o _ h r e a l e a s e p o i n t w l s d e t e c t p o i n t v c c = v l e d u v l o _ h r e a l e a s e p o i n t w l s d e t e c t p o i n t c a s e i i c a s e i v v t i m e t i m e u v l o _ l l o c k o u t p o i n t u v l o _ l l o c k o u t p o i n t
7 / 26 b d 18378efv - m tsz02201 - 0w1w0c500020 - 1 - 2 ? 20 1 5 rohm co., ltd. all rights reserved. www.rohm.co m tsz22111 ? ? 04 . dec . 2015 rev.004 o over temperature tsd130 c: when the die temperature exceeds 130c a warning flag is set and latched. the controller can take act ion to reduce power. a hysteresis of 10c is implemented from the point where the warning flag is set until the warning is released. the chip functionality is not changed. tsd18 0 c: when the die temperature exceeds 180c, the driver disables the output currents. the logic remains functional and the controller is still able to read the status. this allows the controller to take action and avoid a repeated thermal shutdown. a hysteresis of 10c is implemented from the point where the warning flag is set until the warning is released. if the temperature drops below t he hysteresis value then the device will resume its previously set functionality. ? p o r (power on reset) a por event can occur in one of the following situations: 1. low supply voltage at star tup or uvlo (under voltage lock out). 2. when the controller sends a command software_por (software reset) o por at startup or uvlo at startup, which is defined here as first application of supply voltage vcc, or when vcc recovers from an under voltage event, a por will occur. the err pin will be set to low and the por_flag is set high. all registers are set to default values. o por swr (spor) the controller can send a reset command software_por. the por flag in the status register is set high. all registers are set to default values. the err pin will be set low. description of commands command [write_pwm_mapx] is used to assign for each channel output one single pwm input. command [read_pwm_mapx] is used to read back the data and ensure it was received correctly. command [write_calx] is used to set the calibrat ion of each output during operation. command [read_calx] is used to read back the data and ensure it was received correctly. command [write_en_ch annel ] is used to enable/disable the output channels. command [read_en_ch annel ] is used to read back the data to ensure it was received correctly. command [write_en_short@on] is used to enable/disable the short detection at channel on. command [read_en_short@on] is used to read back the data to ensure it was received correctly. command [write_en_open@on] is used to enable/disable the open detection at channel on. command [read_en_open@on] is used to read back the data to ensure it was received correctly. command [write_en_short@off] is used to enable/disable the short detection at channel off. command [read_en_short@off] is used to read back the data to ensure it was received correctly. command [write_en_open@off] is used to enable/disable the open detection at channel off. command [read_en_open@off] is used to read back the da ta to ensure it was received correctly. command [write_en_short_to_gnd] is used to enable/disable the short to ground fault detection. command [read_ en_short_to_gnd] is used to read back the data to ensure it was received correctly. command [write_en_pu ll _ up@on] is used to enable/disable the pull up current at channel on. command [read_ en_pull _ up@on] is used to read back the data to ensure it was received correctly. command [write_en_pull _ up@off] is used to enable/disable the pull up current at channel off. command [read_ en_pull _ up@off] is used to read back the data to ensure it was received correctly. command [write_en_err] is used to enable/disable the bits that activate the emergency warning pin. command [read_en_err] is used to read back the data to ensure it was received correctly. command [write_mask_wls] is used to mask/unmask the weak led supply detection.
8 / 26 b d 18378efv - m tsz02201 - 0w1w0c500020 - 1 - 2 ? 20 1 5 rohm co., ltd. all rights reserved. www.rohm.co m tsz22111 ? ? 04 . dec . 2015 rev.004 command [read_mask_wls] is used to read back data to ensure it was received correctly. command [ write_ lock] is used to lock the important registers . command [ write_ unlock] is used to unlock the important registers . c ommand [read_unlock] is used to read back the data to ensure it was received correctly. command [reset_status] can reset all bits in the status register except for the rext_fault_flag, based on command parameters , and resets the pwm_ok register (see reset_status command description) . command [read_status] is used to access all bits in the status register. command [software_por] resets the chip and sets all registers to default values. por_flag is set high. command [read_pwm_ok] is used to read the pwm detection. command [read_ gen_ short] is used to read the led short detection. command [read_ gen_ open] is used to read the led open detection. command [r ead_short_to_gnd] is used to read the short to ground detection. ? write_pwm_map command & read_pwm_map command : register name address data code<7:0> comments pwm_map k 40 to 45 b 7 b 6 b 5 b 4 b 3 b 2 b 1 b 0 assign ch 2k+1 and ch 2k to pwm x , k=0 to 5 pwm_map k 80 to 85 b7 b6 b5 b4 b3 b2 b1 b0 read ch 2k+1 and ch 2k to pwm x , k=0 to 5 o code: 8bit cmd (for all channels) data<7:4>or<3:0> pwm0 0000 pwm1 0001 pwm2 0010 pwm3 0011 pwm4 0100 pwm5 0101 pwm0 default for invalid data 0110 to 1111 ? write_calx command & read_calx command (where x = 0 to 11): register name address data code<7:0> comments calx 48 to 53 x x b5 b4 b3 b2 b1 b0 write calibration setting of ch0 to ch11 calx 88 to 93 u u b5 b4 b3 b2 b1 b0 read calibration setting of ch0 to ch11 o code: 1=enable cal bit 0=disable cal bit x=dont care u=unchanged ? write_en_channel command & read_en_channel command: register name address data code<7:0> comments en_channel 56 x x b 5 b 4 b 3 b 2 b 1 b 0 enable channel ch 5 to ch 0 en_channel 57 x x b11 b10 b9 b8 b7 b6 enable channel ch11 to ch 6 en_channel 96 u u b5 b4 b3 b2 b1 b0 read enable channel ch5 to ch0 en_channel 97 u u b11 b10 b9 b8 b7 b6 read enable channel ch11 to ch6 o code: 1=enable channel 0=disable channel x=dont care u=unchanged
9 / 26 b d 18378efv - m tsz02201 - 0w1w0c500020 - 1 - 2 ? 20 1 5 rohm co., ltd. all rights reserved. www.rohm.co m tsz22111 ? ? 04 . dec . 2015 rev.004 ? write_en_short@on command & read_en_short@on : register name address data code<7:0> comments en_short@on 58 x x b5 b4 b3 b2 b1 b0 enable short@on ch5 to ch0 en_short@on 59 x x b11 b10 b9 b8 b7 b6 enable short@on ch11 to ch6 en_short@on 98 u u b5 b4 b3 b2 b1 b0 read enable short@on ch5 to ch0 en_short@on 99 u u b11 b10 b9 b8 b7 b6 read enable short@on ch11 to ch6 o code: 1=enable short 0=disable short x=dont care u=unchanged ? write_en_open@on command & read _en_open@on command : register name address data code<7:0> comments en_open@on 5a x x b5 b4 b3 b2 b1 b0 enable open@on ch5 to ch0 en_open@on 5b x x b11 b10 b9 b8 b7 b6 enable open@on ch11 to ch6 en_open@on 9a u u b5 b4 b3 b2 b1 b0 read enable open@on ch5 to ch0 en_open@on 9b u u b11 b10 b9 b8 b7 b6 read enable open@on ch11 to ch6 o code: 1=enable open 0=disable open x=dont care u=unchanged ? write_en_short@off command & read_en_short@off command : register name address data code<7:0> comments en_short@off 5c x x b5 b4 b3 b2 b1 b0 enable short@off ch5 to ch0 en_short@off 5d x x b11 b10 b9 b8 b7 b6 enable short@off ch11 to ch6 en_short@off 9c u u b5 b4 b3 b2 b1 b0 read enable short@off ch5 to ch0 en_short@off 9d u u b11 b10 b9 b8 b7 b6 read enable short@off ch11 to ch6 o code: 1=enable short 0=disable short x=dont care u=unchanged ? write_en_open@off command & read_en_open@off command : register name address data code<7:0> comments en_open@off 5e x x b5 b4 b3 b2 b1 b0 enable open@off ch5 to ch0 en_open@off 5f x x b11 b10 b9 b8 b7 b6 enable open@off ch11 to ch6 en_open@off 9 e u u b5 b4 b3 b2 b1 b0 read enable open@off ch5 to ch0 en_open@off 9 f u u b11 b10 b9 b8 b7 b6 read enable open@off ch11 to ch6 o code: 1=enable open 0=disable open x=dont care u=unchanged ? write_en_short_to_gnd command & read _en_short_to_gnd command : register name address data code<7:0> comments en_short_to_ gnd 60 x x b5 b4 b3 b2 b1 b0 enable short to gnd ch5 to ch0 en_short_to_ gnd 61 x x b11 b10 b9 b8 b7 b6 enable short to gnd ch11 to ch6 en_short_to_ gnd a 0 u u b5 b4 b3 b2 b1 b0 read enable short to gnd ch5 to ch0 en_short_to_ gnd a 1 u u b11 b10 b9 b8 b7 b6 read enable short to gnd ch11 to ch6
10 / 26 b d 18378efv - m tsz02201 - 0w1w0c500020 - 1 - 2 ? 20 1 5 rohm co., ltd. all rights reserved. www.rohm.co m tsz22111 ? ? 04 . dec . 2015 rev.004 o code: 1=enable short to ground 0=disable short to ground x=dont care u=unchanged ? write_en_pull_up@on command & read _en_pull_up@on command : register name address data code<7:0> comments en_pull_up@on 62 x x b5 b4 b3 b2 b1 b0 enable pull up@on ch 5 to ch0 en_pull_up@on 63 x x b11 b10 b9 b8 b7 b6 enable pull up@on ch11 to ch6 en_pull_up@on a 2 u u b5 b4 b3 b2 b1 b0 read enable pull up@on ch5 to ch0 en_pull_up@on a 3 u u b11 b10 b9 b8 b7 b6 read enable pull up@on ch11 to ch6 o code: 1=enable pull up 0=disable pull up x=dont care u=unchanged ? write_en_pull_up@o ff command & r ead _pull_up@off command : register name address data code<7:0> comments en_pull_up@ off 64 x x b5 b4 b3 b2 b1 b0 enable pull up@off ch 5 to ch0 en_pull_up@ off 65 x x b11 b10 b9 b8 b7 b6 enable pull up@off ch11 to ch6 en_pull_up@ off a 4 u u b5 b4 b3 b2 b1 b0 read enable pull up@off ch5 to ch0 en_pull_up@ off a 5 u u b11 b10 b9 b8 b7 b6 read enable pull up@off ch11 to ch6 o code: 1=enable pull up 0=disable pull up x=dont care u=unchanged ? write_en_err_pin command & read _en_err_pin command : register name address data code<7:0> comments en_err_pin 66 x s6 s5 s4 s3 s2 s1 s0 en err pin for status bit6 to bit0 en_err_pin 67 x x x u4 u3 u2 u1 u0 en err pin for unlock bit4 to bit0 en_err_pin a 6 u s6 s5 s4 s3 s2 s1 s0 read en err pin for status bit6 to bit0 en_err_pin a 7 u u u u4 u3 u2 u1 u0 read en err pin for unlock bit4 to bit0 o code: 1=enable 0=disable x= dont care u=unchanged (see also status/unlock register flag description) ? write_ mask_wls command: register name address data code<7:0> comments mask_wls 68 x x x x x x b 1 b 0 make the wls detection visible o code: 01=enable detection 10=disable detection 00=dont touch 11=dont touch x=dont care ( note: b1 and b2 are used as code to change the 1bit mask_wls register ) ? read_ mask_wls command: register name address data code<7:0> comments mask_wls ab u u u u u u u b0 read make the wls detection visible o code:
11 / 26 b d 18378efv - m tsz02201 - 0w1w0c500020 - 1 - 2 ? 20 1 5 rohm co., ltd. all rights reserved. www.rohm.co m tsz22111 ? ? 04 . dec . 2015 rev.004 1= visible 0= not visible u=unchanged ? write_lock command: register name address data code<7:0> comments unlock 69 x x x en_err pwm_map en_ch cal all diag lock o code: default 11111=unlocked 1=lock 0=dont touch x=dont care o en_err locks en_err_pin register o cal locks calx registers o en_ch locks en_channel register o pwm map locks pwm_mapx registers o all diag locks en_short@on, en_open@on, en_short@off, en_open@off, en_short_to_gnd, en_pull_up@on, en_pull_up@off, en_wls registers ? write_unlock command & rea d_unlock command : register name address data code<7:0> comments unlock 6a x x x en_err pwm_map en_ch cal all diag unlock reg. unlock a9 u u u en_err pwm_map en_ch cal all diag read unlock o code for write : code for read: default 11111=unlocked 1=unlock 1=unlock ed 0=dont touch 0= locked x=dont care u=unchanged o en_err unlocks en_err_ pin register o cal unlocks calx registers o en_ch unlocks en_channel register o pwm map unlocks pwm_mapx registers o all diag unlocks en_short@on, en_open@on, en_short@off, en_open@off, en_short_to_gnd, en_pull_up@on, en_pull_up@off, en_wls registers ? re set_status command: register name address data code<7:0> comments reset_status 6b x x short to gnd any short open wls pwm_ok tsd por clear status flags o code: 1=reset 0=dont touch x=dont care ( note 1 : tsd clears bot tsd130 and tsd180 flags) ( note2 : after clearing the flags with the reset_status command the registers will immediately reflect the actual status) ? software_por command: register name address data code<7:0> comments software_por 6c 1 0 1 0 0 0 0 1 resets all registers and sets por flag high ? default register setting: r e g i ster d ef a u l t values after por comments c al i b r a t i o n <5 : 0> ( o f a l l c han n e l s ) < 0 0 0 0 0 0> set all currents to min value
12 / 26 b d 18378efv - m tsz02201 - 0w1w0c500020 - 1 - 2 ? 20 1 5 rohm co., ltd. all rights reserved. www.rohm.co m tsz22111 ? ? 04 . dec . 2015 rev.004 ? status / unlock register flag description : name status default comment por_flag 0 <1> por flag (1 = por detected) tsd130_flag 1 <0> die temperature >130c (1 = over temp) tsd180 _flag 2 <0> die temperature >180c (1 = over temp) wls_fault_flag 3 <0> weak led supply (1 = below threshold) rext_fault_flag 4 <0> fault on external reference resistor (1 = out of range) any_short_open_flag 5 <0> at least one short/open detected at any output (1 = short/open detected) any_short_to_gnd_flag 6 <0> short to gnd(1=short to ground detected) name unlock default comment diag_ un lock_flag 0 <1> diag un lock (1 = unlocked) cal_ un lock_flag 1 <1> calibration un lock (1 =unlocked) ch_en_ un lock_flag 2 <1> channel enable un lock (1 = unlocked) pwm_ map_ un lock_flag 3 <1> pwm map un lock (1 = unlocked) en_err_pin_ un lock_ flag 4 <1> err pin enable un lock (1=unlocked) {por_flag} indicates that a por event has happen (uvlo or software por). {tsd130_flag} indicates the junction temperature is higher than 130c. {tsd180 _flag} indicates the junction temperature is higher than 180c. {wls_fault_flag} indicates a led supply voltage less than normal. {rext_fault_flag} indicates either an open or short fault event at the iref pin. {any_short_open_flag} indicates that at least one output channel has detect ed a short/open event and represents the result of a wired - or fu nction from gen short detection, gen open detection registers content. {any_short_to_gnd_flag} indicates that at least one output channel has detected a short to ground event and represents the result of a wired - or function from short_to_gnd detection registers content. {diag_ un lock_flag} indicates that the enabling of the diagnostics has been locked/unlocked. {cal_ un lock_flag} indicates that channel calibration settings have been locked/unlo cked. {ch_en_ un lock_flag} indicates that channel enabling settings have been locked/unlocked. { pwm_ map_ un lock_flag} indicates that pwm _map settings have been locked/unlocked. {en_err_pin_un lock_flag} indicates that the error pin warning settings have been locked/unlocked. note: all flags in the status register are asynchronous events. after clearing the flags with the reset_status command the registers will immediately reflect the actual status. pwm_map<3:0> ( o f a l l c han n e l s ) <0000> all channels assigned to pwm0 assign all channels to pwm0 gen_ope n <11 : 0 > <0 0 0 0 0 0 0 0 0 0 0 0 > default: no fault. gen_s h o r t < 1 1 : 0> <0 0 0 0 0 0 0 0 0 0 0 0 > default: no fault. s h o r t_to_gnd < 1 1 : 0> <0 0 0 0 0 0 0 0 0 0 0 0 > default: no fault. pwm_ok <5:0> <000 0 00> default: fault en_ch annel <11 : 0 > <0 0 0 0 0 0 0 0 0 0 0 0 > all channels off en_open @on < 11 : 0 > <0 0 0 0 0 0 0 0 0 0 0 0 > open @ on de - activated for all channels en_s h o r t@on < 11 : 0 > <0 0 0 0 0 0 0 0 0 0 0 0 > short @ on de - activated for all channels en_open @off < 11 : 0 > <0 0 0 0 0 0 0 0 0 0 0 0 > open @ off de - activated for all channels en_short@off< 11 : 0 > <0 0 0 0 0 0 0 0 0 0 0 0 > short @ off de - activated for all channels en_short_to_gnd <11:0> <000000000000> short to ground detection de - activated en_pull _ up@on<11:0> <000000000000> all pull - ups de - activated en_pull _ up@off<11:0> <000000000000> all pull - ups de - activated en_err_pin <11:0> <111111111111> all warnings activated unlock<4:0> <11111> all groups unlocked mask _wls <0> default: detection is not visible status<6:0> <0000001> default: por detected
13 / 26 b d 18378efv - m tsz02201 - 0w1w0c500020 - 1 - 2 ? 20 1 5 rohm co., ltd. all rights reserved. www.rohm.co m tsz22111 ? ? 04 . dec . 2015 rev.004 electrical characteristic(s) (unless otherwise s pecified, t a= - 40~ + 105c v cc =3.0~5.5v) item symbol standard value unit conditions min typ max [output d0~d11] (pin no: 5 to 10, 19 to 24 ) output current accuracy, channel to channel *1 i dxa - - 1 5 % ta = 25c v cc = 3.3v r ext = 60k v sense =5v measured across a 82ohm load resistor cal 63 1 4 cal 42 1 6 cal 20 - - 5 ta = 25c v cc = 3.3v r ext = 20k cal 63 3.5 cal 42 6 cal 20 - - 6 ta = 25c v cc = 3.3v r ext = 12k cal 63 7 cal 42 7 cal 20 output current accuracy average to nominal *2 i an - - 8 % ta = 25c v cc = 3.3v r ext = 60k cal 63 8 cal 42 8 cal 20 - - 3 ta = 25c v cc = 3.3v r ext = 20k cal 63 2. 5 cal 42 3 . 5 cal 20 - - 4 ta = 25c v cc = 3.3v r ext = 12k cal 63 4 cal 42 4 cal 20 output current accuracy channel to nominal *3 i dxn - - 16 % ta = 25c v cc = 3.3v r ext = 60k cal 63 15 cal 42 17 cal 20 - - 5 ta = 25c v cc = 3.3v r ext = 20k cal 63 4 cal 42 7 cal 20 - - 7 ta = 25c v cc = 3.3v r ext = 12k cal 63 8 cal 42 8 cal 20 output current temperature shift *8 i dx (temp) 0 - 3.2 a/c v cc = 3.3v r ext = 20k cal 63 output current supply voltage shift i dx (vcc) 0 - 0. 5 ma/v ta = 25c v cc =3.0 - 3.6v r ext = 20k cal 63 0 - 0. 5 ta = 25c v cc =4.5 - 5.5v r ext = 20k cal 63 output leakage current i dleak - - 0.1 ua v d = v sense =8v ta=25c minimum output voltage level v dmin - - - - 0.75 v i d drops to 80%i d max, r ext = 20k v cc =3.3v cal 63 0.5 1 v cc =5v rising time of i d st1 0.3 0.5 1.2 us from 10% to 90% of i dmax , r ext = 20k cal 63 falling time of i d st2 0.2 0.5 1.2 us from 90% to 10% of i dmax , r ext = 20k cal 63 ton error *4 rt - 1 0 1 us measured at 50% of i dmax , r ext = 20k cal 63 delay time pwm to i d dt - 0.26 1 us from pwm0=10% of v cc to i d =10% of i d max (rising edge), r ext = 20k cal 63 *1 ? ? ??? ( % ) = ? ? ? ? ? ? ? ?? ? ??? , where ? ?? = ? ? + ? + ? ?? ?? * 2 ? ? ?? ( % ) = ? ?? ? ? ??? ? ??? ? ??? , this represents device to device accuracy * 3 ? ? ??? ( % ) = ? ? ? ? ??? ? ??? ? ??? * 4 ? ? between pulse width of i d relative to the pulse width of pwm , t his item represents pwm duty cycle linearity ( % ) = | ?? | ???? ??? ? ? ? ??? ? ???
14 / 26 b d 18378efv - m tsz02201 - 0w1w0c500020 - 1 - 2 ? 20 1 5 rohm co., ltd. all rights reserved. www.rohm.co m tsz22111 ? ? 04 . dec . 2015 rev.004 [logic input] (pin no: 4, 11 to 17, 25) *9 high going threshold voltage v th 0.35 x v cc - 0.45 x v cc v low going threshold voltage v tl 0.25 x v cc - 0.35 x v cc v hysteresis width v hys - 0.1 x v cc - v pull up resistance r pullup 100 200 300 k only for pins:4,11,12,16, 17, 25 serial clock frequency f clk - - 1250 khz [logic output] (pin no: 26) output voltage high v oh 0.9 x v cc 0.95 x v cc 1 x v cc v i sdo = - 4ma output voltage low v ol 0 0.05 x v cc 0.1 x v cc v i sdo = 4ma [open drain] (pin no: 3) high level output leakage current i odh_leak - - 0.2 ua v cc = 3.3v low level output voltage v odl - - 0.1x v cc v i od = 4ma v cc = 3.3v [device] circuit current i cc - 4 7.5 ma pin 3 = open pin 26 = open r ext = 20k under voltage lock out uvlo_l 2. 2 2.5 2. 8 v falling v cc under voltage release uvlo_h 2.4 2.7 3 .0 v rising v cc short detection threshold v scth 0.45 - 0.93 v measured across led v sense =5v diag. detection pull down current i pulldown 1 4 2 0 30 ua measured at channel off short_to_ gnd pull - up current i pullup 14 20 30 ua measured at channel off minimum glitch reject *5 *8 t glitch_reject - - 7.5 u s for open / short detection on time *6*7 t on 8 - - us minimum requirement for open/short detection. led short/open detection window t diag_off 12 20 31 us at channel off and pwmy=high open detection threshold v oth 100 - 330 mv measured from output to agnd, vsense=5v short_to_gnd detection threshold v sgth 100 - 330 mv at channel off and pwmy=high, vsense=5v weak led supply detection threshold v wlsth _l 4.0 4.15 4.3 v measured at v sense iref short threshold i short 116 - 220 ua measured at i ref pin v cc = 4 . 5~5.5 v 116 - 300 ua v cc = 3 . 0~3.6v *8 iref open threshold i open 2 - 16 ua measured at i ref pin iref limp home i ref_lh 6 10 16 ma measured at output in case of short or open at i ref pin reference voltage v ref 1.17 1.2 1.23 v r ext = 20k? connected to i ref pin temperature monitoring accuracy *8 t mon - 15 - 15 % at 130c and 180c temperature hysteresis *8 t hyst 7 10 13 c at 130c and 180c sense pin input current i sense - 18 - ua v sense =5v * 5 an open or short that lasts for less than this time will be rejected. * 6 p lease note that the pwm signal is active low therefore, the t on time denotes the period when the signal is at low level. * 7 t his period is derived from a pwm frequency of 200hz and a minimum duty cycle of 0. 2 %. * 8 guaranteed by design. *9 the input circuitry operates as a schmitt trigger and the operation is not affected by the rise and fall times of the input signals .
15 / 26 b d 18378efv - m tsz02201 - 0w1w0c500020 - 1 - 2 ? 20 1 5 rohm co., ltd. all rights reserved. www.rohm.co m tsz22111 ? ? 04 . dec . 2015 rev.004 typical performance curve(s) figure 7 . circuit current v s . supply voltage figure 8 . ref voltage v s . supply voltage figure 9 . output current v s . output voltage figure 10 . output current linearity(rt) v s . pwm 3,5 3,7 3,9 4,1 4,3 4,5 4,7 4,9 2 3 4 5 6 circuit current icc [ma] supply voltage vcc [v] temp= 25 c temp= - 40 c temp= 125 c 1,17 1,18 1,18 1,19 1,19 1,20 1,20 1,21 1,21 1,22 1,22 2 3 4 5 6 reference voltage v iref [v] supply voltage vcc [v] temp = 25 c temp = -40 c temp= 125 c 0 10 20 30 40 50 60 0 0,2 0,4 0,6 0,8 1 1,2 output curret id [ma] output voltage vd[v] vcc=3.3v temp = 25 c temp = - 40 c temp = 125 c -20% -15% -10% -5% 0% 5% 10% 15% 20% 0,1 1,0 10,0 100,0 linearity [%] pwm duty cycle log[%] temp = 25 c temp = -40 c temp = 125 c o o o o o o o o o o o o
16 / 26 b d 18378efv - m tsz02201 - 0w1w0c500020 - 1 - 2 ? 20 1 5 rohm co., ltd. all rights reserved. www.rohm.co m tsz22111 ? ? 04 . dec . 2015 rev.004 spi timing chart figure 11 . write/access data for typical use case figure 12 . input signals timing diagram showing absolute minimal timing input signals timing rule (ta= - 40~ + 105c vcc=3.0~5.5v) parameter symbol min unit clk period tck 800 ns clk high pulse width tckh 300 ns clk low pulse width tckl 300 ns serin high and low pulse width tsew 780 ns serin setup time prior to clk rise tsest 150 ns serin hold time after clk rise tsehd 150 ns latch high pulse time tlah 380 ns last clk rise to latch rise tladz 200 ns the timings are valid for a 1.25mhz clock signal. the input high going threshold voltage (v th ) is 0.4 v cc on the rising edge and (v th ) 0.3 v cc on the falling edge for all digital pins. s ee electrical characteristics .
17 / 26 b d 18378efv - m tsz02201 - 0w1w0c500020 - 1 - 2 ? 20 1 5 rohm co., ltd. all rights reserved. www.rohm.co m tsz22111 ? ? 04 . dec . 2015 rev.004 figure 13 . timing diagram for o utput signal's delay time output signals delay time (ta= - 40~ + 105c vcc=3.0~5.5v) parameter symbol min. typ. max. unit condition latch switching delay dt1 - - 3000 ns serout propagation delay time(l ? h) tdsoh - - 1 30 0 ns serout propagation delay(h ? l) tdsol - - 130 0 ns output signal's delay time
18 / 26 b d 18378efv - m tsz02201 - 0w1w0c500020 - 1 - 2 ? 20 1 5 rohm co., ltd. all rights reserved. www.rohm.co m tsz22111 ? ? 04 . dec . 2015 rev.004 spi communication t h e s erial p ort is u s e d t o w r i t e d a t a , read d ia g no s t ic s t a t us and c on f i gure s e t t i ngs of t he chip b y t ra n s f e r r i ng t he i np u t da t a t o t he de s i red addre s s . d uring n o r m a l opera t i o n an 8 - b i t s e r i al ad d r e s s and 8 - b i t s er i al da t a is w r i t t en i n t o t he 1 6 - b it s h i f t reg i s t e r. the clock idle state is zero and the data on the sdi and sdo lines must be stable while the clock is high and can be changed when the clock is low. t he data is sampled by on the clocks rising edge and propagated on the clocks falling edge , c o n v er t ing t he 16 m o s t re c e nt i npu t s t o p a r a l l e l s i gn a l s o n t he l a t c h ri s ing ed g e. at the r i s i n g e dge on t he l a t c h in p ut a d dre ss es are i n t erpre t e d b y a d e c od e r w hi c h c o n t ro l s da t a t ran s f er be t w e en s h i f t a n d s t ora g e r e gi s t er s . d ep e nding on t h e a ddre s s, v a l id da t a is c o n v e y ed f rom o r t o t he a p propria t e l a t c h o r a c o m m and i s i n t erpre t e d. when a read address is latched data is read out from a storage register and shifted out of sdo to the microcontroller or daisy chained chip s. since for each address the chip shifts out a fixed amount of data at the end of a write/read cycle it is possibl e to send different address codes to each ic in a daisy chain. during the exchange of information the led outputs do not flicker or dim. command set x= dont care address in<15:8> comments hex d7 d6 d5 d4 d3 d2 d1 d0 40 pwm_map01<3> pwm_map01<2> pwm_map01<1> pwm_map01<0> pwm_map00<3> pwm_map00<2> pwm_map00<1> pwm_map00<0> configures output ch1&ch0 to pwmy 41 pwm_map03<3> pwm_map03<2> pwm_map03<1> pwm_map03<0> pwm_map02<3> pwm_map02<2> pwm_map02<1> pwm_map02<0> configures output ch3&ch2 to pwmy 42 pwm_map05<3> pwm_map05<2> pwm_map05<1> pwm_map05<0> pwm_map04<3> pwm_map04<2> pwm_map04<1> pwm_map04<0> configures output ch5&ch4 to pwmy 43 pwm_map07<3> pwm_map07<2> pwm_map07<1> pwm_map07<0> pwm_map06<3> pwm_map06<2> pwm_map06<1> pwm_map06<0> configures output ch7&ch6 to pwmy 44 pwm_map09<3> pwm_map09<2> pwm_map09<1> pwm_map09<0> pwm_map08<3> pwm_map08<2> pwm_map08<1> pwm_map08<0> configures output ch9&ch8 to pwmy 45 pwm_map11<3> pwm_map11<2> pwm_map11<1> pwm_map11<0> pwm_map10<3> pwm_map10<2> pwm_map10<1> pwm_map10<0> configures output ch11&ch10 to pwmy 46 not used not used not used not used not used not used not used not used not used 47 not used not used not used not used not used not used not used not used not used 48 x x cal0<5> cal0<4> cal0<3> cal0<2> cal0<1> cal0<0> current configuration ch0 49 x x cal1<5> cal1<4> cal1<3> cal1<2> cal1<1> cal1<0> current configuration ch1 4a x x cal2<5> cal2<4> cal2<3> cal2<2> cal2<1> cal2<0> current configuration ch2 4b x x cal3<5> cal3<4> cal3<3> cal3<2> cal3<1> cal3<0> current configuration ch3 4c x x cal4<5> cal4<4> cal4<3> cal4<2> cal4<1> cal4<0> current configuration ch4 4d x x cal5<5> cal5<4> cal5<3> cal5<2> cal5<1> cal5<0> current configuration ch5 4e x x cal6<5> cal6<4> cal6<3> cal6<2> cal6<1> cal6<0> current configuration ch6 4f x x cal7<5> cal7<4> cal7<3> cal7<2> cal7<1> cal7<0> current configuration ch7 50 x x cal8<5> cal8<4> cal8<3> cal8<2> cal8<1> cal8<0> current configuration ch8 51 x x cal9<5> cal9<4> cal9<3> cal9<2> cal9<1> cal9<0> current configuration ch9 52 x x cal10<5> cal10<4> cal10<3> cal10<2> cal10<1> cal10<0> current configuration ch10 53 x x cal11<5> cal11<4> cal11<3> cal11<2> cal11<1> cal11<0> current configuration ch11 54 not used not used not used not used not used not used not used not used not used 55 not used not used not used not used not used not used not used not used not used 56 x x en_channel<5> en_channel<4> en_channel<3> en_channel<2> en_channel<1> en_channel<0> configure enable channel register for ch 5 to ch0 57 x x en_channel<11> en_channel<10> en_channel<9> en_channel<8> en_channel<7> en_channel<6> configure enable channel register for ch 11 to ch6 58 x x en_short@on<5> en_short@on<4> en_short@on<3> en_short@on<2> en_short@on<1> en_short@on<0> configure enable short for activated ch5 to ch0 59 x x en_short@on<11> en_short@on<10> en_short@on<9> en_short@on<8> en_short@on<7> en_short@on<6> configure enable short for activated ch11 to ch6 5a x x en_open@on<5> en_open@on<4> en_open@on<3> en_open@on<2> en_open@on<1> en_open@on<0> configure enable open for activated ch5 to ch0 5b x x en_open@on<11> en_open@on<10> en_open@on<9> en_open@on<8> en_open@on<7> en_open@on<6> configure enable open for activated ch11 to ch6 5c x x en_short@off<5> en_short@off<4> en_short@off<3> en_short@off<2> en_short@off<1> en_short@off<0> configure enable short for unactivated ch5 to ch0 5d x x en_short@off<11> en_short@off<10> en_short@off<9> en_short@off<8> en_short@off<7> en_short@off<6> configure enable short for unactivated ch11 to ch6 5e x x en_open@off<5> en_open@off<4> en_open@off<3> en_open@off<2> en_open@off<1> en_open@off<0> configure enable open for unactivated ch5 to ch0 5f x x en_open@off<11> en_open@off<10> en_open@off<9> en_open@off<8> en_open@off<7> en_open@off<6> configure enable open for unactivated ch11 to ch6 60 x x en_short_to_gnd<5> en_short_to_gnd<4> en_short_to_gnd<3> en_short_to_gnd<2> en_short_to_gnd<1> en_short_to_gnd<0> enable short to gnd for ch5 to ch0 61 x x en_short_to_gnd<11> en_short_to_gnd<10> en_short_to_gnd<9> en_short_to_gnd<8> en_short_to_gnd<7> en_short_to_gnd<6> enable short to gnd for ch11 to ch6 62 x x en_pull_up@on<5> en_pull_up@on<4> en_pull_up@on<3> en_pull_up@on<2> en_pull_up@on<1> en_pull_up@on<0> enable pull up @ on for ch5 to ch0 63 x x en_pull_up@on<11> en_pull_up@on<10> en_pull_up@on<9> en_pull_up@on<8> en_pull_up@on<7> en_pull_up@on<6> enable pull up @ on for ch11 to ch6 64 x x en_pull_up@off<5> en_pull_up@off<4> en_pull_up@off<3> en_pull_up@off<2> en_pull_up@off<1> en_pull_up@off<0> enable pull up @ off for ch5 to ch0 65 x x en_pull_up@off<11> en_pull_up@off<10> en_pull_up@off<9> en_pull_up@off<8> en_pull_up@off<7> en_pull_up@off<6> enable pull up @ off for ch11 to ch6 66 x s<6> s<5> s<4> s<3> s<2> s<1> s<0> enable err pin for status bit6 to bit0 67 x x x u<4> u<3> u<2> u<1> u<0> enable err pin for unlock bit4 to bit0 68 x x x x x x mask_wls<1> mask_wls<0> mask wls detection 69 x x x en_err_pin_lock<4> map_lock<3> ch_en_lock<2> cal_lock<1> diag_lock<0> lock 6a x x x en_err_pin_unlock<4> map_unlock<3> ch_en_unlock<2> cal_unlock<1> diag_unlock<0> unlock 6b x x rst_any_shrt_gnd<5> rst_any_shrt_open<4> rst_wls<3> rst_pwm_ok<2> rst_tsd<1> rst_por<0> clear status register flags 6c 1 0 1 0 0 0 0 1 software reset (reset all and set por flag) 6d not used not used not used not used not used not used not used not used not used 6e not used not used not used not used not used not used not used not used not used 6f not used not used not used not used not used not used not used not used not used data in <7:0>
19 / 26 b d 18378efv - m tsz02201 - 0w1w0c500020 - 1 - 2 ? 20 1 5 rohm co., ltd. all rights reserved. www.rohm.co m tsz22111 ? ? 04 . dec . 2015 rev.004 u=unchanged note: the ic has also reserved addresses for internal test modes not shown in the above register map. all test modes are digital and are protected by security codes. adress out <15:8> comments hex d7 d6 d5 d4 d3 d2 d1 d0 80 pwm_map01<3> pwm_map01<2> pwm_map01<1> pwm_map01<0> pwm_map00<3> pwm_map00<2> pwm_map00<1> pwm_map00<0> read output ch1&ch0 to pwmy configuration 81 pwm_map03<3> pwm_map03<2> pwm_map03<1> pwm_map03<0> pwm_map02<3> pwm_map02<2> pwm_map02<1> pwm_map02<0> read output ch3&ch2 to pwmy configuration 82 pwm_map05<3> pwm_map05<2> pwm_map05<1> pwm_map05<0> pwm_map04<3> pwm_map04<2> pwm_map04<1> pwm_map04<0> read output ch5&ch4 to pwmy configuration 83 pwm_map07<3> pwm_map07<2> pwm_map07<1> pwm_map07<0> pwm_map06<3> pwm_map06<2> pwm_map06<1> pwm_map06<0> read output ch7&ch6 to pwmy configuration 84 pwm_map09<3> pwm_map09<2> pwm_map09<1> pwm_map09<0> pwm_map08<3> pwm_map08<2> pwm_map08<1> pwm_map08<0> read output ch9&ch8 to pwmy configuration 85 pwm_map11<3> pwm_map11<2> pwm_map11<1> pwm_map11<0> pwm_map10<3> pwm_map10<2> pwm_map10<1> pwm_map10<0> read output ch11&ch10 to pwmy configuration 86 not used not used not used not used not used not used not used not used not used 87 not used not used not used not used not used not used not used not used not used 88 u u cal0<5> cal0<4> cal0<3> cal0<2> cal0<1> cal0<0> read output configuration ch0 89 u u cal1<5> cal1<4> cal1<3> cal1<2> cal1<1> cal1<0> read output configuration ch1 8a u u cal2<5> cal2<4> cal2<3> cal2<2> cal2<1> cal2<0> read output configuration ch2 8b u u cal3<5> cal3<4> cal3<3> cal3<2> cal3<1> cal3<0> read output configuration ch3 8c u u cal4<5> cal4<4> cal4<3> cal4<2> cal4<1> cal4<0> read output configuration ch4 8d u u cal5<5> cal5<4> cal5<3> cal5<2> cal5<1> cal5<0> read output configuration ch5 8e u u cal6<5> cal6<4> cal6<3> cal6<2> cal6<1> cal6<0> read output configuration ch6 8f u u cal7<5> cal7<4> cal7<3> cal7<2> cal7<1> cal7<0> read output configuration ch7 90 u u cal8<5> cal8<4> cal8<3> cal8<2> cal8<1> cal8<0> read output configuration ch8 91 u u cal9<5> cal9<4> cal9<3> cal9<2> cal9<1> cal9<0> read output configuration ch9 92 u u cal10<5> cal10<4> cal10<3> cal10<2> cal10<1> cal10<0> read output configuration ch10 93 u u cal11<5> cal11<4> cal11<3> cal11<2> cal11<1> cal11<0> read output configuration ch11 94 not used not used not used not used not used not used not used not used not used 95 not used not used not used not used not used not used not used not used not used 96 u u en_channel<5> en_channel<4> en_channel<3> en_channel<2> en_channel<1> en_channel<0> read enable channel register for ch 5 to ch0 97 u u en_channel<11> en_channel<10> en_channel<9> en_channel<8> en_channel<7> en_channel<6> read enable channel register for ch 11 to ch6 98 u u en_short@on<5> en_short@on<4> en_short@on<3> en_short@on<2> en_short@on<1> en_short@on<0> read enable short for activated ch5 to ch0 99 u u en_short@on<11> en_short@on<10> en_short@on<9> en_short@on<8> en_short@on<7> en_short@on<6> read enable short for activated ch11 to ch6 9a u u en_open@on<5> en_open@on<4> en_open@on<3> en_open@on<2> en_open@on<1> en_open@on<0> read enable open for activated ch5 to ch0 9b u u en_open@on<11> en_open@on<10> en_open@on<9> en_open@on<8> en_open@on<7> en_open@on<6> read enable open for activated ch11 to ch6 9c u u en_short@off<5> en_short@off<4> en_short@off<3> en_short@off<2> en_short@off<1> en_short@off<0> read enable short for unactivated ch5 to ch0 9d u u en_short@off<11> en_short@off<10> en_short@off<9> en_short@off<8> en_short@off<7> en_short@off<6> read enable short for unactivated ch11 to ch6 9e u u en_open@off<5> en_open@off<4> en_open@off<3> en_open@off<2> en_open@off<1> en_open@off<0> read enable open for unactivated ch5 to ch0 9f u u en_open@off<11> en_open@off<10> en_open@off<9> en_open@off<8> en_open@off<7> en_open@off<6> read enable open for unactivated ch11 to ch6 a0 u u en_short_to_gnd<5> en_short_to_gnd<4> en_short_to_gnd<3> en_short_to_gnd<2> en_short_to_gnd<1> en_short_to_gnd<0> read enable short to gnd for ch5 to ch0 a1 u u en_short_to_gnd<11> en_short_to_gnd<10> en_short_to_gnd<9> en_short_to_gnd<8> en_short_to_gnd<7> en_short_to_gnd<6> read enable short to gnd for ch11 to ch6 a2 u u en_pull_up@on<5> en_pull_up@on<4> en_pull_up@on<3> en_pull_up@on<2> en_pull_up@on<1> en_pull_up@on<0> read enable pull up @ on for ch5 to ch0 a3 u u en_pull_up@on<11> en_pull_up@on<10> en_pull_up@on<9> en_pull_up@on<8> en_pull_up@on<7> en_pull_up@on<6> read enable pull up @ on for ch11 to ch6 a4 u u en_pull_up@off<5> en_pull_up@off<4> en_pull_up@off<3> en_pull_up@off<2> en_pull_up@off<1> en_pull_up@off<0> read enable pull up @ off for ch5 to ch0 a5 u u en_pull_up@off<11> en_pull_up@off<10> en_pull_up@off<9> en_pull_up@off<8> en_pull_up@off<7> en_pull_up@off<6> read enable pull up @ off for ch11 to ch6 a6 u s<6> s<5> s<4> s<3> s<2> s<1> s<0> read err pin for status bit6 to bit0 a7 u u u u<4> u<3> u<2> u<1> u<0> read err pin for unlock bit4 to bit0 a8 u anyshortgnd<6> anyshortopen<5> rext<4> wls<3> tsd180<2> tsd130<1> por<0> read status register bits 6to 0 a9 u u u en_err_pin_unlock<4> map_unlock<3> ch_en_unlock<2> cal_unlock<1> diag_unlock<0> read unlocked aa u u pwm_ok<5> pwm_ok<4> pwm_ok<3> pwm_ok<2> pwm_ok<1> pwm_ok<0> read pwm ok register for pwm5 to pwm0 ab u u u u u u u mask_wls<0> read mask wls detection ac u u gen_short<5> gen_short<4> gen_short<3> gen_short<2> gen_short<1> gen_short<0> read short register for ch5 to ch0 ad u u gen_short<11> gen_short<10> gen_short<9> gen_short<8> gen_short<7> gen_short<6> read short register for ch11 to ch6 ae u u gen_open<5> gen_open<4> gen_open<3> gen_open<2> gen_open<1> gen_open<0> read open register for ch5 to ch0 af u u gen_open<11> gen_open<10> gen_open<9> gen_open<8> gen_open<7> gen_open<6> read open register for ch11 to ch6 b0 u u short_to_gnd<5> short_to_gnd<4> short_to_gnd<3> short_to_gnd<2> short_to_gnd<1> short_to_gnd<0> read short to gnd register for ch5 to ch0 b1 u u short_to_gnd<11> short_to_gnd<10> short_to_gnd<9> short_to_gnd<8> short_to_gnd<7> short_to_gnd<6> read short to gnd register for ch11 to ch6 b2 not used not used not used not used not used not used not used not used not used b3 not used not used not used not used not used not used not used not used not used b4 not used not used not used not used not used not used not used not used not used data out <7:0>
20 / 26 b d 18378efv - m tsz02201 - 0w1w0c500020 - 1 - 2 ? 20 1 5 rohm co., ltd. all rights reserved. www.rohm.co m tsz22111 ? ? 04 . dec . 2015 rev.004 power dissipation the maximum current specification per output i d max = 50ma. however when all channels are sinking this maximum the total power dis sipation exceeds the value set by the package limit. the power dissipation can be estimated using equation 1 . maximum power dissipation . in case of high current and high voltage it is possible to exceed the maximum power dissipation even at a single channel. because these situations do not occur often the current limit per ch annel is set higher such that the flexibility of the system is improved. it is recommended to connect the leds to a 5v supply voltage (v led ) for an optimal thermal performance. if the leds are connected to a higher voltage care should be taken because pow er dissipation will increase. led series resistors ( r d ) may be added to reduce the voltage drop over the ic output. these resistors are an optional safeguard against exceeding the dissipation limit of bd18378efv - m. the maximum power rating of the bd18378 efv - m can be read from the figure below. equation 1 . maximum power dissipation p diss,max : maximum power dissipation of the package v led : supply voltage of leds. v f : led forward voltage r d : optional series resistance. t pwm : period of pwm t on : on time (duty) of pwm figure 14 . maximum power dissipation of htssopb28 note 1: power dissipation calculated when mounted on 70mm x 70mm x 1.6mm glass epoxy substrate (1 - layer platform/copper thickness 18m) note 2: power dissipation changes with the copper foil density of the board. this value represents only observed values, not gu aranteed values. htssop - b28 pd=1.85w (0.97w) board copper foil area 225m O pd=3.30w (1.72w) board copper foil area 4900 m O pd=4.70w (2.44w) board copper foil area 4900 m O ( value within parentheses represents power dissipation when ta=85c) ? ? ? ? ? ? ? ? ? ? ? ? ? 11 0 , , 11 0 , , , , max , ) ( ) ( i pwm on i d i d i pwm on i d i d i d i f led diss t t i v t t i r i v v p
21 / 26 b d 18378efv - m tsz02201 - 0w1w0c500020 - 1 - 2 ? 20 1 5 rohm co., ltd. all rights reserved. www.rohm.co m tsz22111 ? ? 04 . dec . 2015 rev.004 i/o equivalence circuit(s) input output pin: 4,11,12, 16, 17, 25 pin: 26 pin: 13,14,15 pin: 3 pin: 5 to 10, 19 to 24, pin : 18 figure 15 . input/output equivalent circuits v c c v c c v c c p i n 1 8
22 / 26 b d 18378efv - m tsz02201 - 0w1w0c500020 - 1 - 2 ? 20 1 5 rohm co., ltd. all rights reserved. www.rohm.co m tsz22111 ? ? 04 . dec . 2015 rev.004 operational notes 1. reverse c onnection of p ower s upply connecting the power supply in reverse polarity can damage the ic. take pr ecautions against reverse polarity when connecting the power supply , such as mounting an external diode between the power supply and the ic s power supply pin s. 2. power s upply l ines design the pcb layout pattern to provide low impedance supply lines. s eparate the ground and supply lines of the digital and analog blocks to prevent noise in the ground and supply lines of the digital block from affecting the analog block . furthermore, connect a capacitor to ground at all power supply pins . consider the eff ect of temperature and aging on the capacitance value when using electrolytic capacitors. 3. g round voltage ensure that no pins are at a voltage below that of the ground pin at any time, even during transient condition. 4. g round w iring p attern when using both small - signal and large - current ground traces, the two ground traces should be routed separately but connected to a single ground at the reference point of the application board to avoid fluctuations in the small - signal ground caused by large currents. als o ensure that the ground traces of external components do not cause variations on the ground voltage. the ground lines must be as short and thick as possible to reduce line impedance. 5. thermal c onsideration should by any chance the power dissipation rating be exceeded the rise in temperature of the chip may result in deterioration of the properties of the chip. the absolute maximum rating of the pd stated in this specification is when the ic is mounted on a 70mm x 70mm x 1.6mm glass epoxy board. in case of exceeding this absolute maximum rating, increase the board size and copper area to prevent exceeding the pd rating. 6. recommended o perating c onditions these conditions represent a range within which the expected characteristics of the ic can be approximately obtained . the e lectrical characteristics are guaranteed under the conditions of each parameter . 7. inrush current when power is first supplied to the ic, it is possible that the internal logic may be unstable and inrush current may flow instant aneously due to the internal powering sequence and delays, especially if the ic has more than one power supply. therefore, give special consideration to power coupling capacitance, power wiring, width of ground wiring, and routing of connections. 8. operation u nder s trong e lectromagnetic f ield operating the ic in the presence of a strong electromagnetic field may cause the ic to malfunction . 9. testing on a pplication b oards when testing the ic on an application board, connecting a capacitor directly to a low - impedance output pin may subject the ic to stress. always discharge capacitors completely after each process or step. the ics power supply should always be turned off completely before connecting or removing it from the test setup during the inspect ion process. to prevent damage from static discharge, ground the ic during assembly and use similar precautions during transport and storage. 10. inter - pin short and mounting errors ensure that the direction and position are correct when mounting the ic on th e pcb. incorrect mounting may result in damaging the ic. avoid nearby pins being shorted to each other especially to ground , power supply and output pin . inter - pin shorts could be due to many reasons such as metal particles, water droplets (in very humid environment) and unintentional solder bridge deposited in between pins during assembly to name a few.
23 / 26 b d 18378efv - m tsz02201 - 0w1w0c500020 - 1 - 2 ? 20 1 5 rohm co., ltd. all rights reserved. www.rohm.co m tsz22111 ? ? 04 . dec . 2015 rev.004 operational notes C continued 11. unused input pins input pins of an ic are often connected to the gate of a mos transistor. the gate has extremely high im pedance and extremely low capacitance. if left unconnected, the electric field from the outside can easily charge it. the small charge acquired in this way is enough to produce a significant effect on the conduction through the transistor and cause unexpec ted operation of the ic. so unless otherwise specified, unused input pins should be connected to the power supply or ground line. 12. regarding the i nput p in of the ic this monolithic ic contains p+ isolation and p substrate layers between adjacent elements in order to keep them isolated. p - n junctions are formed at the intersection of the p layers with the n layers of other elements, creating a parasitic diode or transistor. for example (refer to figure below): when gnd > pin a and gnd > pin b, the p - n junc tion operates as a parasitic diode. when gnd > pin b, the p - n junction operates as a parasitic transistor. parasitic diodes inevitably occur in the structure of the ic. the operation of parasitic diodes can result in mutual interference among circuits, o perational faults, or physical damage. therefore , conditions that cause these diodes to operate, such as applying a voltage lower than the gnd voltage to an input pin (and thus to the p substrate) should be avoided. figure 16 . example of monolithic ic structure 13. ceramic capacitor when using a ceramic capacitor, determine the dielectric constant considering the change of capacitance with temperature and the decrease in nominal capacitance due to dc bias and others. 14. area of safe operation (aso) operate the ic such that the output voltage, output current, and power dissipation are all within the area of safe operation (aso). 15. thermal s hutdown c ircuit(tsd) this ic has a built - in thermal shutdown circuit that prevents heat damage to the ic. normal operation should always be within the ics power dissipation rating. if however the rating is exceeded for a continued period, the junction temperature (tj) will rise which will activate the tsd circuit that will turn off all outpu t pins. when the tj falls below the tsd threshold, the circuits are automatically restored to normal operation. note that the tsd circuit operates in a situation that exceeds the absolute maximum ratings and therefore, under no circumstances, should the tsd circuit be used in a set design or for any purpose other than protecting the ic from heat damage. 16. over c urrent p rotection c ircuit (ocp) this ic incorporates an integrated overcurrent protection circuit that is activated when the load is shorted. this protection circuit is effective in preventing damage due to sudden and unexpected incidents. however, the ic should not be used in applications characterized by continuous operation or transitioning of the protection circuit. n n p + p n n p + p s u b s t r a t e g n d n p + n n p + n p p s u b s t r a t e g n d g n d p a r a s i t i c e l e m e n t s p i n a p i n a p i n b p i n b b c e p a r a s i t i c e l e m e n t s g n d p a r a s i t i c e l e m e n t s c b e t r a n s i s t o r ( n p n ) r e s i s t o r n r e g i o n c l o s e - b y p a r a s i t i c e l e m e n t s
24 / 26 b d 18378efv - m tsz02201 - 0w1w0c500020 - 1 - 2 ? 20 1 5 rohm co., ltd. all rights reserved. www.rohm.co m tsz22111 ? ? 04 . dec . 2015 rev.004 ordering information b d 1 8 3 7 8 e f v - me2 package efv: htssop - b28 packaging m: high reliability e2: embossed carrier tape (htssop - b28) figure 17 . ordering information marking diagram figure 18 . mark ing diagram 1pin mark htssop - b2 8 (top view) bd18378efv part number marking lot number
25 / 26 b d 18378efv - m tsz02201 - 0w1w0c500020 - 1 - 2 ? 20 1 5 rohm co., ltd. all rights reserved. www.rohm.co m tsz22111 ? ? 04 . dec . 2015 rev.004 physical dimensions, tape and reel information for htssop - b28 figure 19 . physical dimensions for htssop - b28 figure 20 . tape and reel information
26 / 26 b d 18378efv - m tsz02201 - 0w1w0c500020 - 1 - 2 ? 20 1 5 rohm co., ltd. all rights reserved. www.rohm.co m tsz22111 ? ? 04 . dec . 2015 rev.004 revision history date revision author / comments 01.dec.2014 003 adrian joita C datasheet release after aec - q100 qualification 04 . dec .2015 004 adrian joita - added note for aec - q100 - operating temperature grade - added note for v sense - added thermal information - added description of write_calx & read_calx commands < page 8 > - added i sense parameter - added note on input circuitry - corrected typo for propagation delay - added pin 18 to i/o equivalent circuits status of this document the english version of this document is formal specification. a customer may use the translation version only for a reference to help reading the formal version. if there are any differences in translation version of this document formal version takes priority.
notice-paa-e rev.002 ? 2015 rohm co., ltd. all rights reserved. notice precaution on using rohm products 1. if you intend to use our products in devices requirin g extremely high reliability (such as medical equipm ent (note 1) , aircraft/spacecraft, nuclear power controllers, etc.) and whose malfunction or failure may cause loss of human life, bodily injury or serious damage to property ( specific applications ), please consult with the rohm sales representative in advance. unless otherwise agreed in w riting by rohm in advance, rohm shall not be in any way responsible or liable for any damages, expenses or loss es incurred by you or third parties arising from the use of any rohm s products for specific applications. (note1) medical equipment classification of the speci fic applications japan usa eu china class class class b class class ? class 2. rohm designs and manufactures its products subject to strict quality control system. however, semicondu ctor products can fail or malfunction at a certain rate. p lease be sure to implement, at your own responsibilit ies, adequate safety measures including but not limited to fail-sa fe design against the physical injury, damage to any property, which a failure or malfunction of our products may cause. the following are examples of safety measures: [a] installation of protection circuits or other prot ective devices to improve system safety [b] installation of redundant circuits to reduce the impact of single or multiple circuit failure 3. our products are not designed under any special o r extraordinary environments or conditions, as exemplifi ed below. accordingly, rohm shall not be in any way responsibl e or liable for any damages, expenses or losses arisi ng from the use of any rohms products under any special or extraordinary environments o r conditions. if you intend to use our products under any special or extraordinary environments o r conditions (as exemplified below), your independent verification and confirmation of product performance, reliability, etc, prior to use, must be necessary: [a] use of our products in any types of liquid, includ ing water, oils, chemicals, and organic solvents [b] use of our products outdoors or in places where the p roducts are exposed to direct sunlight or dust [c] use of our products in places where the products ar e exposed to sea wind or corrosive gases, including cl 2 , h 2 s, nh 3 , so 2 , and no 2 [d] use of our products in places where the products are exposed to static electricity or electromagnetic wave s [e] use of our products in proximity to heat-producing c omponents, plastic cords, or other flammable items [f] sealing or coating our products with resin or othe r coating materials [g] use of our products without cleaning residue of flu x (even if you use no-clean type fluxes, cleaning res idue of flux is recommended); or washing our products by using w ater or water-soluble cleaning agents for cleaning residue after soldering [h] use of the products in places subject to dew con densation 4. the products are not subject to radiation-proof des ign. 5. please verify and confirm characteristics of the f inal or mounted products in using the products. 6. in particular, if a transient load (a large amount o f load applied in a short period of time, such as pul se. is applied, confirmation of performance characteristics after on-bo ard mounting is strongly recommended. avoid applying power exceeding normal rated power; exceeding the power rati ng under steady-state loading condition may negativ ely affect product performance and reliability. 7. de-rate power dissipation depending on ambient te mperature. when used in sealed area, confirm that it i s the use in the range that does not exceed the maximum junction temperature. 8. confirm that operation temperature is within the s pecified range described in the product specification. 9. rohm shall not be in any way responsible or liabl e for failure induced under deviant condition from w hat is defined in this document. precaution for mounting / circuit board design 1. when a highly active halogenous (chlorine, bromin e, etc.) flux is used, the residue of flux may negati vely affect product performance and reliability. 2. in principle, the reflow soldering method must be used on a surface-mount products, the flow soldering method must be used on a through hole mount products. if the flo w soldering method is preferred on a surface-mount produc ts, please consult with the rohm representative in advanc e. for details, please refer to rohm mounting specificat ion
notice-paa-e rev.002 ? 2015 rohm co., ltd. all rights reserved. precautions regarding application examples and extern al circuits 1. if change is made to the constant of an external circuit, please allow a sufficient margin considerin g variations of the characteristics of the products and external component s, including transient characteristics, as well as sta tic characteristics. 2. you agree that application notes, reference designs , and associated data and information contained in this document are presented only as guidance for products use. there fore, in case you use such information, you are solely responsible for it and you must exercise your own inde pendent verification and judgment in the use of such information contained in this document. rohm shall not be in a ny way responsible or liable for any damages, expens es or losses incurred by you or third parties arising from the use of such information. precaution for electrostatic this product is electrostatic sensitive product, which may be damaged due to electrostatic discharge. pleas e take proper caution in your manufacturing process and storage so that voltage exceeding the products maximum rating wi ll not be applied to products. please take special care under dry condition (e.g. grounding of human body / equipment / solder iron, isolation from charged objects, setting of ionizer, friction prevention and temperature / humidity contro l). precaution for storage / transportation 1. product performance and soldered connections may dete riorate if the products are stored in the places where : [a] the products are exposed to sea winds or corrosive gases, including cl2, h2s, nh3, so2, and no2 [b] the temperature or humidity exceeds those recomme nded by rohm [c] the products are exposed to direct sunshine or con densation [d] the products are exposed to high electrostatic 2. even under rohm recommended storage condition, sold erability of products out of recommended storage time period may be degraded. it is strongly recommended to confirm solderability before using products of which storage time is exceeding the recommended storage time period. 3. store / transport cartons in the correct direction, whi ch is indicated on a carton with a symbol. otherwise bent leads may occur due to excessive stress applied when droppin g of a carton. 4. use products within the specified time after open ing a humidity barrier bag. baking is required before us ing products of which storage time is exceeding the recommended sto rage time period. precaution for product label qr code printed on rohm products label is for rohm s internal use only. precaution for disposition when disposing products please dispose them properly using an authorized industry waste company. precaution for foreign exchange and foreign trade a ct since concerned goods might be fallen under listed it ems of export control prescribed by foreign exchange and foreign trade act, please consult with rohm in case of export . precaution regarding intellectual property rights 1. all information and data including but not limite d to application example contained in this document is for reference only. rohm does not warrant that foregoing informatio n or data will not infringe any intellectual property rights or any other rights of any third party regarding such informat ion or data. 2. rohm shall not have any obligations where the cla ims, actions or demands arising from the combination of the products with other articles such as components, circuit s, systems or external equipment (including software). 3. no license, expressly or implied, is granted hereby under any intellectual property rights or other rights of rohm or any third parties with respect to the products or the informa tion contained in this document. provided, however, t hat rohm will not assert its intellectual property rights or othe r rights against you or your customers to the extent ne cessary to manufacture or sell products containing the products, su bject to the terms and conditions herein. other precaution 1. this document may not be reprinted or reproduced, in whole or in part, without prior written consent of roh m. 2. the products may not be disassembled, converted, mo dified, reproduced or otherwise changed without prior wri tten consent of rohm. 3. in no event shall you use in any way whatsoever t he products and the related technical information cont ained in the products or this document for any military purposes, incl uding but not limited to, the development of mass-d estruction weapons. 4. the proper names of companies or products described in this document are trademarks or registered trademarks of rohm, its affiliated companies or third parties.
datasheet datasheet notice ? we rev.001 ? 2016 rohm co., ltd. all rights reserved. general precaution 1. before you use our pro ducts, you are requested to care fully read this document and fully understand its contents. rohm shall n ot be in an y way responsible or liabl e for fa ilure, malfunction or acci dent arising from the use of a ny rohms products against warning, caution or note contained in this document. 2. all information contained in this docume nt is current as of the issuing date and subj ec t to change without any prior notice. before purchasing or using rohms products, please confirm the la test information with a rohm sale s representative. 3. the information contained in this doc ument is provi ded on an as is basis and rohm does not warrant that all information contained in this document is accurate an d/or error-free. rohm shall not be in an y way responsible or liable for an y damages, expenses or losses incurred b y you or third parties resulting from inaccur acy or errors of or concerning such information.
datasheet part number BD18378EFV-M package htssop-b28 unit quantity 2500 minimum package quantity 2500 packing type taping constitution materials list inquiry rohs yes BD18378EFV-M - web page distribution inventory

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