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| AM4961A document number: ds 36626 rev. 1 - 2 1 of 17 www.diodes.com october 2013 ? diodes incorporated AM4961A a product line of diodes incorporated new product single phase full wave pwm motor driver description the AM4961A is highly integrated feature rich single phase brushless direct current (bldc) full wave motor driver with pwm control function for fans, blowers and extractors. for system flexibility the motor speed can be controlled by either an external pwm signal or by a dc voltage or from a thermistor network. based on the input signal, the AM4961A adjust the output duty cycle. to help protect the motor coil, the AM4961A provides a rotor lock protection which shuts down the output if rotor lock is detected. the device automatically re - starts when the rotor lock is removed. to help interface to external system for monitoring the motor status and speed, AM4961A provides open drain rotor lock detect alarm output (rd) pin and a tachometer outpu t frequency generator (fg). the fg output is the magnetic change frequency. the AM4961A is available in ssop - 16 and htssop - 14 packages . f eatures ? operating voltage : 3.5v to 16v ? internal h - bridge with 1a peak current capability ? speed control with external pwm, dc or thermistor signals ? minimal speed setting ? built - in hall bias circuit ? reference voltage output ? rotor lock p rotection with output shutdown and auto restart ? rotation speed indication (fg) ? rotation or lock state indication (rd) ? built - in thermal shutdown circuit ? industry standard ssop - 16 and thermally enhanced htsso p - 14 p ackage s ? totally lead - free & fully rohs compliant (notes 1 & 2 ) ? halogen and antimony free. ?green? device (note 3) pin assignments (top view) ssop -16 ( gs package ) (top view) htssop -14 ( gh package ) applications ? 12v bldc cooling fans, motors, extractors and blowers ? cpu cool er fan in pc ? instrumentation and equipment c ooling fans ? brushless dc motor driver notes: 1. no purposely added lead. fully eu directive 2002/95/ec (rohs) & 2011/65/eu (rohs 2) compliant. 2. see http://www.diodes.com/quality/lead_free.html for more infor mation about diodes incorporated?s definitions of halogen - and antimony - free, "green" and lead - free. 3. halogen - and antimony - free "green? products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total br + cl) and <1000ppm antimony compounds. 2 3 4 5 6 7 8 15 14 13 12 11 10 9 16 1 out 2 nc vcc vmin vpwm cosc fg rd hin + hb hin - vref ct gnd out 1 pgnd 1 2 3 4 5 6 7 14 13 12 11 9 8 10 pgnd pgnd out 2 vcc vmin vpwm cosc fg rd hin + hb hin - vref ct gnd out 1
AM4961A document number: ds 36626 rev. 1 - 2 2 of 17 www.diodes.com october 2013 ? diodes incorporated AM4961A a product line of diodes incorporated new product typical applications circuit out2 out1 vcc gnd vmin ct vpwm vref cosc hin- fg hb rd hin+ hall AM4961A d1 c1 1f or greater r1 27k r2 10k r4 39k r6 330k r7 100k r5 100k pwm vcc l1 r3 7.5k r8 68k c2 0.33f c3 100pf c4 0.47f 1 ( 1) 2 (3) 3 (4) 4 (5) 5 (6) 6 (7) 7 (8) 8 (9) 9 (10) 10 (11) 11 (12) 12 (13) 13 (14) 14 (15) pgnd (16) q1 typical a pplication c ircuit with an e xternal i nput pwm s peed c ontrol s ignal note: 4. c1 is for power stabilization and should be 1 f or higher depending on the motor current and motor design. pin description s package: htssop - 14 and ssop16 pin number pin n ame function htssop - 14 ssop - 16 1 1 out2 drive output 2 ? 2 nc no connection 2 3 vcc power supply 3 4 vmin minimum duty setting 4 5 vpwm adjustable input 5 6 cosc oscillator capacitor 6 7 fg rotation speed indicator 7 8 rd rotation/lock state indicator 8 9 hin+ hall sensor input+ 9 10 hb hall sensor bias regulator 10 11 hin - hall sensor input - 11 12 vref reference voltage regulator 12 13 ct lock and rotation setting capacitor terminal 13 14 gnd ground for control circuit 14 15 out1 drive output 1 ? 16 pgnd power ground AM4961A document number: ds 36626 rev. 1 - 2 3 of 17 www.diodes.com october 2013 ? diodes incorporated AM4961A a product line of diodes incorporated new product functional block diagram lock shutdown and auto restart voltage reference hall bias thermal shutdown hysteresis amp control circuit oscillation circuit ct vcc vref hb hin + hin - vmin vpwm cosc gnd pgnd out 1 out 2 rd fg 2 ( 3 ) 11 ( 12 ) 9 ( 10 ) 8 ( 9 ) 10 ( 11 ) 3 ( 4 ) 4 ( 5 ) 5 ( 6 ) 13 ( 14 ) ( 16 ) 14 ( 15 ) 1 ( 1 ) 7 ( 8 ) 6 ( 7 ) 12 ( 13 ) pre - driver 20 ? 20 ? a (b) : a for htssop - 14 pins b for ssop - 16 pins truth table hin - hin+ cosc (note 5) ct out1 out2 fg rd mode h l h l h l l l rotation (drive) l h l h off h l l off l l rotation (recirculate) l h l off off h l h h h off l off lock protection l h off h off h l l off off l l h off off off note : 5 . v osc (h)>v pwm , v osc (l) AM4961A document number: ds 36626 rev. 1 - 2 5 of 17 www.diodes.com october 2013 ? diodes incorporated AM4961A a product line of diodes incorporated new product electrical characteristics (@v cc = 12v, t a symbol =25c, unless otherwise specified.) parameter conditions min typ max units i quiescent current q1 lock off 10.2 15 18.76 ma i lock on q2 5.38 8 10.55 v vref voltage ref i ref 5.8 = 5ma 6 6.2 v v output saturation voltage at high side sath i source ? = 200ma 1.0 1.17 v v output saturation voltage at low side satl i sink ? = 200ma 0.2 0.3 v f cosc frequency osc c osc 18 = 100pf 25 32 khz v cosc high level voltage osch ? 3.45 3.6 3.75 v v cosc low level voltage oscl ? 1.83 1.95 2.07 v v hall input hysteresis hys ? ? 10 20 mv v hall bias voltage hb i hb 1.1 = 5ma 1.25 1.4 v v ct high level voltage cth ? 3.55 3.7 3.88 v v ct low level voltage ctl ? 1.55 1.7 1.85 v i ct charge current chg ? 1.5 2 2.85 a i ct discharge current dhg ? 0.14 0.2 0.285 a r ct charge and discharge ratio cd i chg /i 8.5 dhg 10 14.5 ? v fg output low level voltage fgl i fg ? = 5ma 0.3 0.4 v i fg leakage current lfg v fg ? = 12v ? 30 a v rd output low level voltage rdl i rd ? = 5ma 0.3 0.4 v i rd leakage current lrd v rd ? = 12v ? 30 a AM4961A document number: ds 36626 rev. 1 - 2 6 of 17 www.diodes.com october 2013 ? diodes incorporated AM4961A a product line of diodes incorporated new product functional description s h - bias ? hall bias output this is a 1.25v nominal voltage source to bias a differential un - buffered hall element sensor. if a hall element requires a lower voltage than the h - bias output, connect an appropriate value resistor between the h - bias pin and the hall element supply pin. h+ and h - ? hall inputs the rotor position is detected by a hall sensor, with the output applied to the h+ and h - pins. this sensor can be either a 4 pin 'naked' hall device or of the 3 pin buffered switching type. for a 4 pin device the differential hall output signal is connected to the h+ and h - pins. for a buffered hall sensor the hall device output is attached to the h+ pin, with a pull - up attached if needed, whilst the h - pin has an external potential divider attached to hold the pin at half vref. when h+ is high in relation to h - , out2 is the active drive. vref ? output reference voltage this is a 6v nominal reference output voltage. it is designed to 'source' current and therefo re it will not 'sink' any current from a higher voltage. the total current drawn from the v ref pin by any external circuitry, such as the minimum speed potential divider to vmin pin, should not exceed 5ma. cosc pin a capacitor at the c osc pin generates a triangular waveform which is compared with vpwm (or vmin) to generate output pulse width modulated (pwm) drive for speed control. a capacitor of 100pf capacitor connected between cosc and ground a 25 k h z triangle wave with high level voltage is 0.3vcc typ ical and low level voltage of 0.16vcc typical. for 12v supply, the high and low level thresholds are 3.6v and 1.95v . vpwm - speed control input the voltage applied to the vpwm pin provides control of the m otor speed by varying the pwm drive ratio at the out1 and out2 outputs. the control signal should be a variable dc voltage input of range 3.6v to 1.9 5 v for nominal 12v supply , representing 0% to 100% drive respectively. if variable speed control is not required this pin can be tied to an external potential divider to set a fixed speed or tied to ground to provide full speed i.e. 100% pwm drive. if external input pwm signal is used to control the speed, this input pwm signal needs to be conve r ted to a dc voltage to meet the vpwm pin inp ut range. vmin ? minimum speed setting a voltage can be set on this pin via a potential divider between the v ref (or supply) and gnd pins. this voltage is monitored by the vpwm pin to clamp the vpwm control voltage so that it does not rise above vmin volt age. as a higher voltage on the vpwm pin represents a lower speed, the vmin setting prevents the motor speed going lower than the minimum speed set by the vmin pin. when the vmin voltag e is higher than the lowest speed setting voltage allowed (the low est s peed voltage is about 0.28 vcc), the fan speed is maintained at the at the lowest speed. ct pin ? locked rotor timing capacitor the ct pin will have a capacitor connected to ground. it is a multi - function pin providing timing for the lock detect and auto - restart. different rates of charge and discharge of ct capacitor depending on the mode of operation (fan operation status) give the lock - detect time (t lckdet ) and lock time (t off ) before next auto - start retry. when the motor is running, the capacitor is discharged at every hall signal change. ct pin provides the timing for the locked rotor monitor. in normal operation, lock detect is enabled. if the hall signal does not change (i.e. a rotor lock condition) within the lock detect time (t lckdet ), the o utputs are disabled. in this condition the motor will not be driven for a set time t off . this t off time depends on the external ct capacitor value and its internal discharge current (i dhg ) . after the t off period device enter auto - restart phase to re - start the motor with a new lock detect time. if the motor has not turned to generate a transition on the hall inputs by the end this t lckdet period, motor re - enters motor lock t off period with outputs disabled. if the hall signal change is detected, the motor is deemed as running and goes into lock - detection mode. the t lckdet and t off are determined by the value of the external capacitor on the ct pin and the internal charge and discharge currents during these time periods. the currents during, t lckdet and t off a re i chg , and i dhg respectively. fg ? frequency generator (tachometer) output this is the frequency generator output and is a buffered signal from the hall sensor. this is an open collector drive giving an active pull down with the high level being provid ed by an external pull up resistor. AM4961A document number: ds 36626 rev. 1 - 2 7 of 17 www.diodes.com october 2013 ? diodes incorporated AM4961A a product line of diodes incorporated new product functional description s rd pin this is the fan locked status detector. this is an open collector drive giving an active pull down with the high level being provided by an external pull up resistor. when fan is locked, rd pin is in off state. out1 and out2 pin out1 and out2 pins provide h - bridge driver output for fan and motor coil connection. v cc ? i c this provides the supply for the device. supply voltage gnd ? supply return this is the device supply ground return pin for control signal. pgnd ? power supply return this is the device supply ground return pin for power output pin out1 and out2 will generally be the most negative supply pin to the fan. AM4961A document number: ds 36626 rev. 1 - 2 8 of 17 www.diodes.com october 2013 ? diodes incorporated AM4961A a product line of diodes incorporated new product performance characteristics quiescent current vs. ambient temperature quiescent current vs. supply voltage o utput saturation voltage (high) vs. output current output saturation voltage (low) vs. output current power dissipation vs. ambient temperature power dissipation vs. ambient temperature -50 0 50 100 150 200 0 4 8 12 16 20 v cc =12v rotation mode i q1 (ma) t a ( o c) 4 4 6 8 8 10 12 12 14 16 16 18 0 4 8 12 16 20 i q1 (ma) v cc (v) t a =25 o c rotation mode 0 200 400 600 800 1000 0.0 0.5 1.0 1.5 2.0 v sath (v) i out (ma) v cc =12v 0 200 400 600 800 1000 0.0 0.5 1.0 1.5 2.0 v satl (v) i out (ma) v cc =12v -20 0 20 40 60 80 100 0.0 0.2 0.4 0.6 0.8 1.0 1.2 p d (w) t a ( o c) 90 package: htssop-14 no external heatsink -20 0 20 40 60 80 100 120 0.0 0.2 0.4 0.6 0.8 1.0 1.2 p d (w) t a ( o c) 90 package: ssop-16 no external heatsink AM4961A document number: ds 36626 rev. 1 - 2 9 of 17 www.diodes.com october 2013 ? diodes incorporated AM4961A a product line of diodes incorporated new product applications note typical application circuit for pwm input signal for speed control with AM4961A is shown below. the speed is primarily controlled by a voltage on the vpwm pin (either from dc voltage signal or pwm inputs signal converted to dc voltage) or alternatively a pwm signal on cosc pin. out2 out1 vcc gnd vmin ct vpwm vref cosc hin- fg hb rd hin+ hall AM4961A d1 c1 1f or greater r1 27k r2 10k r4 39k r6 330k r7 100k r5 100k pwm vcc l1 r3 7.5k r8 68k c2 0.33f c3 100pf c4 0.47f 1 (1) 2 (3) 3 (4) 4 (5) 5 (6) 6 (7) 7 (8) 8 (9) 9 (10) 10 (11) 11 (12) 12 (13) 13 (14) 14 (15) pgnd (16) q1 typical application circuit ? external pwm i nput s peed c ontrol note: 9. c1 is for power stabilization and should be 1uf or higher depending on the motor current and motor design. power supply stabilization the recommended operating voltage range for am 4961a is 3.5v to 16v. a decoupling capacitor c1 (which also acts as re - circulating capacitor at commutation) should be connected close to the v cc pin. c1 is for power stabilization and should be 1 f or higher depending on the motor current an d motor de s i gn. hall bias and hall input for commutation signal the hb pin provides a 1.25v hall bias voltage to drive hall element. the output of the hall elements or the hall switches con nect to hall inpu t h+ and h - pin as described previously in functional descri ption section. to avoid noise, the connection to the hall element or switch should be as short as possible. the hall input stage (h+ and h - pin) has a hysteresis of 20mv typical. the differential hall input signal should be 50mv peak or higher . output pwm frequency setting ? csosc c apacitor the output pwm frequency is generated by comparing vpwm or vmin (whichever is lower) to the tr i angular wave on the cosc pin. see ?speed control and minimum speed setting? figure. the triangular wave is generated at the cosc pin when a capacitor c3 is connected between it and the ground. the triangular wave has high level of 0.3vcc typical and low level voltage of 0.16v cc typical. for 12v nominal supply these two levels are 3.6v and 1.9 5 v typically. the capacitor c 3 of 100pf at cosc pin provides output pwm frequency of 25khz typical . the c3 capacitor should be connected close to the cosc pin . AM4961A document number: ds 36626 rev. 1 - 2 10 of 17 www.diodes.com october 2013 ? diodes incorporated AM4961A a product line of diodes incorporated new product applications note (cont.) speed control the motor speed is governed by the output pwm duty of the h - bridge. m the voltage on the vpwm, vmin pin and cosc pin controls the output pwm duty and therefore the speed of the motor. when the vp wm voltage is smaller than vmin voltage, t he output pwm duty is generated by comparing the tr iangular voltage at cosc pin with vpwm . if the vpwm pin voltage is higher than the vmin pin, the speed is controlled by comparing cosc voltage with vmin voltage. when the vpwm voltage is lower than the low side of the cosc voltage, the motor will run at full speed. see ?speed control and minimum speed setting? figure. an input dc voltage from 3.6v to 1.9v (for 12v supply) on the vpwm pin controls the output pwm duty form 0% to 100% thus allowing speed control from 0% to 100 % of the full speed. if variable speed con trol is not required the pin should be tied to an external voltage through a potential divider for a fixed speed or tied to ground for full speed (i.e. 100% output duty pwm drive). the potential divider for a fixed voltage can be supplied by the supply vol tage (as shown in typical application circuit) or by the vref provided the maximum current drawn out form the vref pin is below 5ma. for speed control based on ambient temperature, a thermistor can be used as one of the resistor s in the potential divider. if a n external input pwm signal is used to control the motor speed, the input pwm signal can be converted to a dc level with transistor q1, resistors r1 to r and an integrating capacitor c2. see typical application circuit. lowest speed setting voltage vpwm adjustable voltage f osc =25khz (c osc =100pf) vmin voltage cosc output low speed pwm variable high speed v cc 0v fg output v osc v osc speed control and minimum speed setting AM4961A document number: ds 36626 rev. 1 - 2 11 of 17 www.diodes.com october 2013 ? diodes incorporated AM4961A a product line of diodes incorporated new product applications note (cont.) minimum speed setting the minimum speed setting prevents the motor speed dropping below a set speed when the speed demand is too low (i.e. vpwm vol tage is closer to 3.6v) when the vpwm pin voltage higher than the vmin voltage, vmin voltage is compared to the cosc pin to generate output pwm duty. therefore, setting vmin to certain fixed voltage forces the vmin to control the speed even when the pwm voltage is higher. the output pwm duty will be clamped to the pwm duty represented by the vmin voltage when the speed demand is lower than the set minimum. if vmin is not used or application does not need to set the minimum speed, connect the vmin to vpwm directly. when the vmin is connected to the vpwm the minimum output pwm duty defaults to 10%. rotor lock detect and off time setting the capacitor c4 from ct pin to the ground provides the timing for the lock detect and auto - restart. the capacitor c4 is charges and discharged by th e ct pin at a fixed rate depending on the mode of operation (fan operation status) and t h e refore the value of the c4 to give s lock - detect time (t lckdet ) and lock time (t off ) before next auto - start retry. the AM4961A return s the c4 voltage to the low threshold, v ctl (1.7 7 v), each time the hall sensor provides the commutation signal. c4 is charged with i chg which is typically 2 a. if the voltage on the c4 reaches the high threshold, v cth (3.7v) before the next hall signal chan ge, the output will be shutdown and the device will enter lock condition. t lckdet = c 4 ( v cth ? v ctl ) i chg the thresholds voltage and charge current are fixed, therefore the t lckdet t lckdet = c 4 1 10 6 time depends only on the value of c4 . for c4 of 0.47 f, t lckdet is 0.47s if lock detection causes device to enter output shutdown, the ct pin will discharge the c4 capacitor with i dhg provide t off period. the t off is the time the device waits before next auto - restart . during t off period, the c4 is discharged for the high threshold, v cth to low threshold v ctl at the discharge current i dhg which is typically 0.2 a. t off = c 4 ( v cth ? v ctl ) i dhg the thresholds voltage and discharge current are fixed, therefore the t off t off = c 4 10 10 6 time depends only on the value of c4. for ct of 0.4 s, t off is 4.7s before the next auto restart . thermal shutdown AM4961A includes a thermal shutdown function. w hen the device junction temperature is higher than 176 oc typical , the thermal shutdown function is triggered and the low side output transistors in h - bridge driver will be turn ed off. when the ic junction temperature drops below 148 c typical , the device will recover . AM4961A document number: ds 36626 rev. 1 - 2 12 of 17 www.diodes.com october 2013 ? diodes incorporated AM4961A a product line of diodes incorporated new product applications note (cont.) status output - fg and rd output the fg output pin is an open collector output which switches on (pulled low) and off (pulled high with an external resistor) depending on the magnetic phase of the motor. the external pull up resistor should be connected to the fg pin. the rd output pin is also an open collector which switches on (pulled low) while the motor rotates and switched off (pulled high with an external resistor) when the rotor is stopped. the fg and rd pins have series resisto rs of 25 typical integrated in th e fg/rd outpu t structure to increased robustness against reverse supply connection of the fg an rd pins to ground. the typical value for external pull - up on fg and rd pins is 10k . t lckdet t off hall ct fg v cth v ctl t lckdet rd ordering information AM4961A xx xx g1 packing package tr : tape & reel gs : ssop-16 gh : htssop-14 g1 : green product name rohs/green diodes ic?s pb - free products with "g1" suffix in the part number, are rohs compliant and green. part number marking id packaging 13 ? tape and reel quantity AM4961Agstr - g1 am4961gs - g1 ssop -16 30 00/tape & reel AM4961Aghtr - g1 am4961gh - g1 htssop -14 30 00/tape & reel AM4961A document number: ds 36626 rev. 1 - 2 13 of 17 www.diodes.com october 2013 ? diodes incorporated AM4961A a product line of diodes incorporated new product package outline dimensions (all dimensions in mm (inch) .) (1) package type: ssop - 16 3.800(0. 150) 4.000(0. 157) 0.200(0.008) 0.300(0. 012) 0.800(0.031) 0.635(0. 025) bsc 0.900(0.035) 1.000(0. 039) 0.100(0. 004) 0.250(0.010 ) 1.350(0.053) 1.750(0.069) 0.400(0.016) 1.270(0.050) 4.700(0. 185) 5.100(0.201) 5.800(0.228) 6.200(0.244) 0.650(0.026) 0.750(0.030) 0.200(0.008) 0.250(0.010) 1.350(0.053) 1.550(0.061) 0.020(0.001) 0.050(0.002) r0.150(0.006) r0.150(0.006) 0.250(0.010) see detail a 7 7 8 8 0.150(0.006) 0.250(0.010) 0 8 detail a note: eject hole , oriented hole and mold mark is optional . AM4961A document number: ds 36626 rev. 1 - 2 14 of 17 www.diodes.com october 2013 ? diodes incorporated AM4961A a product line of diodes incorporated new product package outline dimensions ( c ont. ) ( all dimensions in mm (inch) .) (2) package type: htsso - 14 6 . 350 ( 0 . 250 ) 6 . 550 ( 0 . 258 ) 1 . 470 ( 0 . 058 ) 1 . 570 ( 0 . 062 ) 1 . 450 ( 0 . 057 ) 1 . 550 ( 0 . 061 ) 0 . 750 ( 0 . 030 ) 0 . 850 ( 0 . 033 ) 0 . 650 ( 0 . 026 ) bsc 1 . 300 ( 0 . 051 ) bsc 6 . 200 ( 0 . 244 ) 6 . 600 ( 0 . 260 ) 0 . 340 ( 0 . 013 ) 0 . 540 ( 0 . 021 ) 1 . 200 ( 0 . 047 ) max 0 . 050 ( 0 . 002 ) 0 . 200 ( 0 . 008 ) 0 . 900 ( 0 . 035 ) 1 . 050 ( 0 . 041 ) 4 . 300 ( 0 . 169 ) 4 . 500 ( 0 . 177 ) see detail a 0 . 250 ( 0 . 010 ) bsc r 0 . 090 ( 0 . 004 ) min r 0 . 090 ( 0 . 004 ) min 0 . 200 ( 0 . 008 ) min 10 14 0 . 450 ( 0 . 018 ) 0 . 750 ( 0 . 030 ) 1 . 000 ( 0 . 039 ) ref 0 8 detail a note : eject hole , oriented hole and mold mark is optional . 0.200(0.008) or 1.480(0.058) 0.280(0.011) or 1.610(0.063) 0.100(0.004) 0.150(0.006) 0.100(0.004) 0.190(0.007) 0.200(0.008) or 1.470(0.058) 0.240(0.009) or 1.570(0.062) base metal AM4961A document number: ds 36626 rev. 1 - 2 15 of 17 www.diodes.com october 2013 ? diodes incorporated AM4961A a product line of diodes incorporated new product suggested pad layout (1) package type: ssop - 16 z g x e y dimensions z (mm)/(inch) g (mm)/(inch) x (mm)/(inch) y (mm)/(inch) e (mm)/(inch) value 7.400/0.291 3.400/0.134 0.400/0.016 2.000/0.079 0.635/0.025 AM4961A document number: ds 36626 rev. 1 - 2 16 of 17 www.diodes.com october 2013 ? diodes incorporated AM4961A a product line of diodes incorporated new product suggested pad layout ( c ont.) (2) package type: htssop - 14 e1 e2 x1 g z x y dimensions z (mm)/(inch) g (mm)/(inch) x (mm)/(inch) x1 (mm)/(inch) value 7.720/0.304 4.160/0.164 0.420/0.017 1.710/0.067 dimensions y (mm)/(inch) e1 (mm)/(inch) e2 (mm)/(inch) ? value 1.780/0.070 1.300/0.051 0.650/0.026 ? AM4961A document number: ds 36626 rev. 1 - 2 17 of 17 www.diodes.com october 2013 ? diodes incorporated AM4961A a product line of diodes incorporated new product important notice diodes incorporated makes no warranty of any kind, express or implied, with regards to this document, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose (and their equivalents under the laws of any jurisdiction). diodes incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other c hanges without further notice to this document and any product described herein. diodes incorporated does not assume any liability arising out of the application or use of this document or any product described herein; neither does diodes incorporated convey any license unde r its patent or trademark rights, nor the rights of others. any customer or user of this document or products described herein in such applications shall assume all risks of such use and will agree to hold diodes incorporated and all the companies whose products are represented on diod es incorporated website, harmless against all damages. diodes incorporated do es not warrant or accept any liability whatsoever in respect of any products purchased through unauthorized sales channel. should customers purchase or use diodes incorporated products for any unintended or unauthorized application, customers shall indemni fy and hold diodes incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees arising ou t of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized applicat ion. products described herein may be covered by one or more united states, international or foreign patents pending. product nam es and markings noted herein may also be covered by one or more united states, international or foreign trademarks. this doc ument is written in english but may be translated into multiple languages for reference. only the english version of this do cument is the final and determinative format released by diodes incorporated. life support diodes incorporated products are speci fically not authorized for use as critical components in life support devices or systems without the express written approval of the chief executive officer of diodes incorporated. as used herein: a. life support devices or systems are devices or system s which: 1. are intended to implant into the body, or 2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided i n the labeling can be reasonably expected to result in significant injury to the user. b. a critical component is any component in a life support device or system whose failure to perform can be reasonably expe cted to cause the failure of the life support device or to affect its safety or effectiveness. custom ers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety - related requirements c oncerning their products and any use of diodes incorporated products in such safety - critical, life support devices or systems, notwithstanding any devices - or systems - related information or support that may be provided by diodes incorporated. further, cus tomers must fully indemnify diodes incorporated and its representatives against any damages arising out of the use of diodes incorporated products in such safety - critical, life support devices or systems. copyright ? 2013, diodes incorporated www.diodes. com |
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