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december 2011 doc id 022599 rev 1 1/24 24 STOD13A 250 ma dual dc-dc converter for powering amoled displays features step-up and inverter converters operating input voltage range from 2.5 v to 4.5 v synchronous rectification for both dc-dc converters minimum 250 ma output current 4.6 v fixed positive output voltage programmable negative voltage by s wire from -2.4 v to -6.4 v at 100 mv steps typical efficiency 85% pulse skipping mode in light load condition 1.5 mhz pwm mode control switching frequency tdma noise high immunity enable pin for shutdown mode low quiescent current in shutdown mode soft-start with inrush current protection overtemperature protection temperature range -40 c to 85 c true-shutdown mode fast outputs discharge circuit after shutdown short-circuit protection package dfn12l (3 x 3) 0.6 mm height applications active matrix amoled power supply in portable devices cellular phones camcorders and di gital still cameras multimedia players description the STOD13A is a dual dc-dc converter for amoled display panels. it integrates a step-up and an inverting dc-dc converter making it particularly suitable for battery operated products, in which the major concern is overall system efficiency. it works in pulse skipping mode during low load conditions and pwm-mode at 1.5 mhz frequency for medium/high load conditions. the high frequency allows the value and size of external components to be reduced. the enable pin allows the device to be turned off, therefore reducing the current consumption to less than 1 a. the negative output voltage can be programmed by an mcu through a dedicated pin which implements single-wire protocol. soft-start with controlled inrush current limit, thermal shutdown and short-circuit protection are integrated functions of the device. dfn12l (3 x 3 mm) table 1. device summary order code positive voltage negative voltage package packaging STOD13Atpur 4.6v -2.4v to -6.4v dfn12l (3 x 3mm) 3000 parts per reel www.st.com
contents STOD13A 2/24 doc id 022599 rev 1 contents 1 schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3 maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 5 typical performance characteristi cs . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 6 detailed description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 6.1 s wire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 6.1.1 s wire features and benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 6.1.2 s wire protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 6.1.3 s wire basic operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 6.2 negative output voltage levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 7 application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 7.1 external passive components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 7.1.1 inductor selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 7.1.2 input and output capacitor selection . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 7.2 recommended pcb layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 8 detailed description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 8.1 general description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 8.1.1 multiple operation modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 8.1.2 enable pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 8.1.3 soft-start and inrush current limiting . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 8.1.4 undervoltage lockout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 8.1.5 overtemperature protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 8.1.6 short-circuit protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 8.1.7 fast discharge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 9 package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
STOD13A contents doc id 022599 rev 1 3/24 10 revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
schematic STOD13A 4/24 doc id 022599 rev 1 1 schematic figure 1. application schematic note: all the above components refer to the typical application performance characteristics. operation of the device is not limited to the choice of these external components. inductor values ranging from 3.3 h to 6.8 h can be used together with the STOD13A. en en vina cmid vmid l1 lx1 vinp cin s wire s -wire vbat vref cref lx2 l2 agnd pgnd co2 vo2 s tod1 3 a am10430v1 fd fd table 2. typical external components comp. manufacturer part number value size ratings l 1 (1) coilcraft murata semco abco lps4012-472ml lqh3npn4r7mj0 cig22b4r7mne lpf2810t-4r7m 4.7h 4.0 x 4.0 x 1.2 3.0 x 3.0 x 1.1 2.5 x 2.0 x 1.0 2.8 x 2.8 x 1.0 20%, curr. 1.7a, res. 0.175 20%, curr. 1.1a, res. 0.156 20%, curr. 1.1a, res. 0.300 20%, curr. 0.85a, res. 0.33 l 2 (2) coilcraft murata toko lps4012-472ml lqh3npn4r7mj0 dfe252012c 1239as-h-4r7n 4. 7h 4.0 x 4.0 x 1.2 3.0 x 3.0 x 1.1 2.5 x 2.0 x 1.2 20%, curr. 1.7a, res. 0.175 20%, curr. 1.1a, res. 0.156 30%, curr. 1.2a, res. 0.252 c in murata taiyo yuden grm219r61a106ke44 lmk212bj106kd-t 2 x 10f 0805 0805 10%, x5r, 10v 10%, x5r, 10v c mid murata taiyo yuden grm219r61a106ke44 lmk212bj106kd-t 10f 0805 0805 10%, x5r, 10v 10%, x5r, 10v c o2 murata taiyo yuden grm219r61a106ke44 lmk212bj106kd-t 2 x 10f 0805 0805 10%, x5r, 10v 10%, x5r, 10v c ref murata taiyo yuden grm185r60j105ke26 jmk107bj105kk-t 1f 0603 0603 10%, x5r, 6.3v 10%, x5r, 6.3v 1. a 250 ma load can be provided wi th inductor saturation current as a minimum of 0.9 a. 2. at -6.4 v, a 250 ma load can be pr ovided with inductor saturation curr ent as a minimum of 1.5 a. see section 7.1.1 .
STOD13A schematic doc id 022599 rev 1 5/24 figure 2. block schematic
pin configuration STOD13A 6/24 doc id 022599 rev 1 2 pin configuration figure 3. pin configuration (top view) table 3. pin description pin name pin number description lx 1 1 boost converter switching node. pgnd 2 power ground pin. v mid 3 boost converter output voltage. fd 4 fast discharge control pin. when pulled low the fast discharge after shutdown is active. when pulled hi gh the fast discharge is off. agnd 5 signal ground pin. this pin must be connected to the power ground layer. v ref 6 voltage reference output. 1f bypass capacitor must be connected between this pin and agnd. s wire 7 negative voltage setting pin. en 8 enable control pin. high = converter on; low = converter in shutdown mode. v o2 9 inverting converter output voltage. lx 2 10 inverting converter switching node. v in a 11 analogic input supply voltage. v in p 12 power input supply voltage. exposed pad internally connected to agnd. exposed pad must be connected to ground layers in the pcb layout in order to guarantee proper operation of the device.
STOD13A maximum ratings doc id 022599 rev 1 7/24 3 maximum ratings note: absolute maximum ratings are those values beyond which damage to the device may occur. functional operation under these conditions is not implied. table 4. absolute maximum ratings symbol parameter value unit v ina , v inp dc supply voltage - 0.3 to 6 v en, s wire logic input pins - 0.3 to 4.6 v fd logic input pin - 0.3 to v ina +0.3 v ilx 2 inverting converter switching current internally limited a lx 2 inverting converter switching node voltage - 10 to v inp +0.3 v v o2 inverting converter output voltage - 10 to agnd+0.3 v v mid step-up converter output voltage -0.3 to 6 v lx 1 step-up converter switching node voltage - 0.3 to v mid +0.3 v ilx 1 step-up converter?s switching current internally limited a v ref reference voltage - 0.3 to 3 v p d power dissipation internally limited mw t st storage temperature range - 65 to 150 c t j maximum junction temperature +150 c esd human body model protection 2 kv machine body model protection 200 v table 5. thermal data symbol parameter value unit r thja thermal resistance junction-ambient 33 c/w r thjc thermal resistance junction-case (fr-4 pcb) (1) 1. the package is mounted on a 4-layer (2 s2p) jedec board as per jesd51-7. 2.12 c/w
electrical characteristics STOD13A 8/24 doc id 022599 rev 1 4 electrical characteristics t j = 25 c, v ina = v inp = 3.7 v, i mid,o2 = 30 ma, c in = 2 x 10 f, c mid, = 10 f, c o2 = 2 x 10 f, c ref = 1 f, l1 = l2 = 4.7 h, v en = 2 v, v mid = 4.6 v, v o2 = -4.9 v unless otherwise specified. table 6. electrical characteristics symbol parameter test conditions min. typ. max. unit general section v ina, v inp supply input voltage 2.5 3.7 4.5 v uvlo_h undervoltage lockout high v ina rising 2.22 2.25 v uvlo_l undervoltage lockout low v ina falling 1.9 2.18 v i_ vi input current no load condition 1.7 2.1 ma i q_sh shutdown current v en =gnd; t j =-40c to +85c 1 a v en h enable high threshold v ina =2.5v to 4.5v, t j =-40c to +85c 1.2 v v en l enable low threshold 0.4 i en enable input current v en =v ina =4.5v; t j =-40c to +85c 1a v fd h fast discharge high threshold v ina =2.5v to 4.5v, t j =-40c to +85c 1.2 v v fd l fast discharge low threshold 0.4 fs switching frequency pwm mode 1.35 1.5 1.65 mhz d1 max step-up maximum duty cycle no load 87 % d2 max inverting maximum duty cycle no load 87 % total system efficiency i mid,o2 =10 to 30ma, v mid =4.6v, v o2 =-4.9v 78 % i mid,o2 =30 to 150ma, v mid =4.6v, v o2 =-4.9v 85 i mid,o2 =150 to 250ma, v mid =4.6v, v o2 =-4.9v 82 v ref reference voltage i ref =10a 1.208 1.220 1.232 v i ref reference current capability at 98.5% of no load reference voltage 100 a step-up converter section v mid positive output voltage 4.6 v positive output voltage total variation v ina =v inp =2.9v to 4.5v; i mid =5ma to 250ma, i o2 no load t j = -40c to +85c - 0.8 0.8 % v mid lt line transient v ina,p =3.4v to 2.9v, i mid =100ma; t r =t f =10s -10 mv
STOD13A electrical characteristics doc id 022599 rev 1 9/24 symbol parameter test conditions min. typ. max. unit v mid t load transient response i mid =3 to 30ma and i mid =30 to 3ma, t r =t f =150s 20 mv i mid =10 to 100ma and i mid =100 to 10ma, t r =t f =15 0 s 25 mv tdma noise undershoot/overshoot i mid =10 to 100ma; i o2 no load (1) 20 mv static variation between low and high v in level 4 i mid max maximum output current v ina,p =2.9v to 4.5v 250 ma i-l 1max step-up inductor peak current v mid 10% below nominal value 1.08 1.32 a r dson p1 p-channel static drain-source on resistance v ina =v inp =3.7v, i sw-p1 =100ma 1.0 2.0 r dson n1 n-channel static drain-source on resistance v ina =v inp =3.7v, i sw-n1 =100ma 0.4 1.0 inverting converter section v o2 negative output voltage range 41 different values set by the s wire pin (see section 6.1.2 ) -6.4 -2.4 v negative output voltage -4.9 v negative output voltage total variation v ina =v inp =2.9v to 4.5v; i o2 =5ma to 250ma, i mid no load t j =-40c to +85c -1.7 1.7 % v o2 lt line transient v ina,p =3.4v to 2.9v, i o2 =100ma, t r =t f =10s +10 mv v o2 t load transient response i o2 =3 to 30ma and i o2 =30 to 3ma, t r =t f =150s 20 mv i o2 =10 to 100ma and i o2 =100 to 10ma, t r =t f =150s 25 mv tdma noise undershoot/overshoot i o2 =10 to 100ma; i mid no load (1) 20 mv static variation between low and high v in level 5 i o2 max maximum output current v ina,p =2.9v to 4.5v - 250 ma i-l 2max inverting peak current v o2 below 10% nominal value -1.43 -1.17 a r dson p2 p-channel static drain-source on resistance v ina =v inp =3.7v, i sw-p2 =100ma 0.42 0.8 r dson n2 n-channel static drain-source on resistance v ina =v inp =3.7v, i sw-n2 =100ma 0.43 0.8 thermal shutdown otp overtemperature protection 140 c otp hyst overtemperature protection hysteresis 15 c table 6. electrical characteristics (continued)
electrical characteristics STOD13A 10/24 doc id 022599 rev 1 symbol parameter test conditions min. typ. max. unit discharge resistor r dis resistor value no load, en=sw=fd=low 400 t dis discharge time no load, en=sw=fd=low, v mid - v o2 at 10% of nominal value 10 ms 1. v ina,p = 4.2 to 3.7 v, 3.7 to 3.2 v, 3.4 to 2.9 v, f = 200 hz; t on = 3.65 ms; t off = 1.25 ms; t r = t f = 10 s, pulse signal. table 6. electrical characteristics (continued)
STOD13A typical performance characteristics doc id 022599 rev 1 11/24 5 typical performance characteristics v ina = v inp = 3.7 v, v o2 = - 4.9 v, t j = 25c; see ta bl e 1 for external components used in the tests below. figure 4. maximum power output vs. input voltage (v ina = v inp = 2.9 to 4.2 v) figure 5. efficiency vs. output current v ina = v inp = 3.3 to 4.2 v, i mid,o2 = 10 to 250 ma figure 6. efficiency vs. inductor figure 7. soft-start and inrush current (no load) i mid,o2 = 10 to 250 ma, l1 = l2 figure 8. fast discharge figure 9. switching and output waveforms no load, en = sw = fd = low v ina = v inp = 2.9 v, i mid,o2 = 250 ma, t j = 85 c
typical performance characteristics STOD13A 12/24 doc id 022599 rev 1 figure 10. step-up ccm operation figure 11. inverting ccm operation i mid = 100 ma i o2 = 100 ma
STOD13A detailed description doc id 022599 rev 1 13/24 6 detailed description 6.1 s wire protocol: to digitally communicate over a single cable with single-wire components single-wire's 3 components: 1. an external mcu 2. wiring and associated connectors 3. the STOD13A device with a dedicated single-wire pin. 6.1.1 s wire features and benefits fully digital signal no handshake needed protection against glitches and spikes though an internal low pass filter acting on both rising and falling edges uses a single wire (plus analog ground) to accomplish both communication and power control transmission simplified design with an interface protocol that supplies control and signaling over a single-wire connection to set the output voltages. 6.1.2 s wire protocol single-wire protocol uses conventional cmos/ttl logic levels (maximum 0.6 v for logic ?zero? and a minimum 1.2 v for logic ?one?) with operation specified over a supply voltage range of 2.5 v to 4.5 v both master (mcu) and slave (STOD13A) are configured to permit bit sequential data to flow only in one direction at a time; master initiates and controls the device data is bit-sequential with a start bit and a stop bit signal is transferred in real time system clock is not required; each single-w ire pulse is self-clocked by the oscillator integrated in the master and is asserted valid within a frequency range of 250 khz (maximum). 6.1.3 s wire basic operations the negative output voltage levels are selectable within a wide range (steps of 100 mv) the device can be enabled / disabled via s wire in combination with the enable pin.
detailed description STOD13A 14/24 doc id 022599 rev 1 6.2 negative output voltage levels the fd function is only controlled by the fd pin. it is not related to the enable block. table 7. negative output voltage levels pulse v o2 pulse v o2 pulse v o2 pulse v o2 1 -6.4 11 -5.4 21 -4.4 31 -3.4 2 -6.3 12 -5.3 22 -4.3 32 -3.3 3 -6.2 13 -5.2 23 -4.2 33 -3.2 4 -6.1 14 -5.1 24 -4.1 34 -3.1 5 -6.0 15 -5.0 25 -4.0 35 -3.0 6-5.916 (1) -4.9 26 -3.9 36 -2.9 7 -5.8 17 -4.8 27 -3.8 37 -2.8 8 -5.7 18 -4.7 28 -3.7 38 -2.7 9 -5.6 19 -4.6 29 -3.6 39 -2.6 10 -5.5 20 -4.5 30 -3.5 40 -2.5 41 -2.4 1. default value. table 8. enable and s wire operation table (1) enable s wire action low low device off low high negative output set by s wire high low default negative output voltage high high default negative output voltage 1. the enable pin must be set to agnd while using the s wire function. table 9. fast discharge operation table fd pin action low fast discharge active after ic shutdown high no fast discharge function
STOD13A application information doc id 022599 rev 1 15/24 7 application information 7.1 external passive components 7.1.1 inductor selection magnetic shielded low esr power inductors must be chosen as the key passive components for switching converters. for the step-up converter an inductance between 4.7 h and 6.8 h is recommended. for the inverting stage the suggested inductance ranges from 3.3 h to 4.7 h. it is very important to select the right inductor according to the maximum current the inductor can handle to avoid saturation. the step-up and the inverting peak current can be calculated as follows: equation 1 equation 2 where v mid : step-up output voltage, fixed at 4.6 v; v o2 : inverting output voltage including sign (minimum value is the absolute maximum value); i o : output current for both dc-dc converters; v in : input voltage for the stod03a; f s : switching frequency. use the minimum value of 1.35 mhz for the worst case; 1: efficiency of step-up converter. typical value is 0.70; 2: efficiency of inverting converter. typical value is 0.60. the negative output voltage can be set via s wire at - 6.4 v. accordingly, the inductor peak current, at the maximum load condition, increases. a proper inductor, with a saturation current as a minimum of 1.5 a, is preferred. 7.1.2 input and output capacitor selection it is recommended to use x5r or x7r low esr ceramic capacitors as input and output capacitors in order to filter any disturbance present in the input line and to obtain stable operation for the two switching converters. a minimum real capacitance value of 6 f must be guaranteed for c mid and c o2 in all conditions. consider ing tolerance, temperature variation and dc polarization, a 10 f 10 v 10% capacitor as c mid and 2 x 10 f 10 v 10% as c o2 , can be used to achieve the required 6 f. 1 l fs v 2 ) vin v ( vin vin 1 i v i mid min mid min min out mid boost peak ? + = ? 2 ) 2 ( 2 2 2 ) 2 ( l fs vin vo vo vin vin i vo vin i min min min min min out min min inverting peak x x - x x + x x - = - 2 ) 2 ( 2 2 2 ) 2 ( l fs vin vo vo vin vin i vo vin i min min min min min out min min inverting peak x x - x x + x x - = -
application information STOD13A 16/24 doc id 022599 rev 1 7.2 recommended pcb layout the STOD13A is high frequency power switch ing device and therefore requires a proper pcb layout in order to obtain the necessary stab ility and optimize line/load regulation and output voltage ripple. analog input (v ina ) and power input (v inp ) must be kept separated and connected together at the c in pad only. the input capacitor must be as close as possible to the ic. in order to minimize the ground noise, a common ground node for power ground and a different one for analog ground must be used. in the recommended layout, the agnd node is placed close to c ref ground while the pgnd node is centered at c in ground. they are connected by a separated layer routing on the bottom through vias. the exposed pad is connected to agnd through vias. figure 12. top layer and silk-screen (top view, not to scale)
STOD13A application information doc id 022599 rev 1 17/24 figure 13. bottom layer (top view, not to scale)
detailed description STOD13A 18/24 doc id 022599 rev 1 8 detailed description 8.1 general description the STOD13A is a high efficiency dual dc-d c converter which integrates a step-up and inverting power stage suitable for supplying amoled panels. thanks to the high level of integration it needs only 6 external components to operate and it achieves very high efficiency using a synchronous rectification te chnique for each of the two dc-dc converters. the controller uses an average cu rrent mode technique in order to obtain good stability and precise voltage regulation in all possible conditions of input voltage, output voltage, and output current. in addition, the peak inductor cu rrent is monitored in order to avoid saturation of the coils. the STOD13A implements a power saving technique in order to maintain high efficiency at very light load and it switches to pwm operation as the load increases in order to guarantee the best dynamic performances and low noise operation. the STOD13A avoids battery leakage thanks to the true-shutdown feature and it is self protected from overtemperature. undervoltage lockout and soft-start guarantee proper operation during startup. 8.1.1 multiple operation modes both the step-up and the inverting stage of the STOD13A operate in three different modes: pulse skipping (psm), discontinuous conduc tion mode (dcm) and continuous conduction mode (ccm). it switches automatically betwee n the three modes according to input voltage, output current, and out put voltage conditions. pulse skipping operation: the STOD13A works in pulse skipping mode when the load current is below a few ma. the load current level at which this way of operation occurs depends on input voltage only for the step-up converter and on input voltage and negative output voltage (vo2) for the inverting converter. discontinuous conduction mode: when the load increases above some tens of ma, the STOD13A enters dcm operation. in order to obtain this type of operation the controller must avoid the inductor current going negative. the discontinuous mode detector (dmd) blocks sense the voltage across the synchronous rectifiers (p1b for the step-up an d n2 for the inverting) and turn off the switches when the voltage crosses a defined th reshold which, in turn , represents a certain current in the inductor. this cu rrent can vary according to the slope of the inductor current which depends on input voltage, inductance value, and output voltage. continuous conduction mode: at medium/high output loads, the STOD13A en ters in full ccm at constant switching frequency mode for each of the two dc-dc converters.
STOD13A detailed description doc id 022599 rev 1 19/24 8.1.2 enable pin the device operates when the en pin is set hi gh. if the en pin is set low, the device stops switching, and all the internal blocks are turned off. in this condition the current drawn from v inp /v ina is below 1 a in the whole temperature ra nge. in addition, the internal switches are in an off state so the load is electrically disconnected from the input, this avoids unwanted current leakage from the input to the load. 8.1.3 soft-start and in rush current limiting after the en pin is pulled high, or after a suitable voltage is applied to v inp , v ina and en the device initiates the startup ph ase. as a first step, the c mid capacitor is charged, the p1b switch implements a current limiting technique in order to keep the charge current below 400 ma. this avoids the battery overloading during startup. after v mid reaches the v inp voltage level, the p1b switch is fully turned on and the soft-start procedure for the step-up is started. after around 2 ms the soft-start for the inverting is started. the positive and negative voltages are under regulation at around 6ms after the en pin is asserted high. 8.1.4 undervoltage lockout the undervoltage lockout function avoids im proper operation of the STOD13A when the input voltage is not high enough. when the input voltage is below the uvlo threshold the device is in shutdown mode. the hysteresis of 50 mv avoids unstable operation when the input voltage is close to the uvlo threshold. 8.1.5 overtemperature protection an internal temperature sensor continuously monitors the ic junction temperature. if the ic temperature exceeds 140 c, typical, the device stops operating. as soon as the temperature falls below 125 c, typical, normal operation is restored. 8.1.6 short-circuit protection when short-circuit occu rs, the device is able to detect the voltage difference between v in and v out . overshoots are limited, decreasing the indu ctor current. afte r that, the output stages of the device are turned off. this status is maintained, avoiding current flowing to the load. a new enable transition is needed to restart the device. during startup the short- circuit protection is active. 8.1.7 fast discharge when enable turns from high to low level and the fd pin is low, the device goes into shutdown mode and lx1 and lx2 stop switching. then, the discharge switch between v mid and v in and the switch between v o2 and gnd turn on and discharge the positive output voltage and negative output voltage. when the output voltages are discharged to 0 v, the switches turn off and the outputs are high impedance. when the fd pin is high, the fast discharge after shutdown is off.
package mechanical data STOD13A 20/24 doc id 022599 rev 1 9 package mechanical data in order to meet environmental requirements, st offers these de vices in different grades of ecopack ? packages, depending on their level of environmental compliance. ecopack specifications, grade definitions, and product status are available at: www.st.com . ecopack is an st registered trademark.
STOD13A package mechanical data doc id 022599 rev 1 21/24 dim. mm. inch. min. typ. max. min. typ. max. a 0.51 0.55 0.60 0.020 0.022 0.024 a1 0 0.02 0.05 0 0.001 0.002 a 3 0.20 0.00 8 b 0.1 8 0.25 0. 3 0 0.007 0.010 0.012 d2. 8 5 33 .15 0.112 0.11 8 0.124 d2 1. 8 7 2.02 2.12 0.074 0.0 8 0 0.0 83 e2. 8 5 33 .15 0.112 0.11 8 0.124 e2 1.06 1.21 1. 3 1 0.042 0.04 8 0.052 e 0.45 0.01 8 l0. 3 0 0.40 0.50 0.012 0.016 0.020 dfn12l ( 3 x 3 x 0.6 mm) mechanical data 8 0 8 5116/a
package mechanical data STOD13A 22/24 doc id 022599 rev 1 figure 14. dfn12l (3 x 3 mm) footprint recommended data
STOD13A revision history doc id 022599 rev 1 23/24 10 revision history table 10. document revision history date revision changes 14-dec-2011 1 initial release.
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