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20911 sy 20110131-s00005 no.a1926-1/13 specifications of any and all sanyo semiconductor co.,l td. products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer ' s products or equipment. to verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer ' sproductsor equipment. any and all sanyo semiconductor co.,ltd. products described or contained herein are, with regard to "standard application", intended for the use as general electronics equipment (home appliances, av equipment, communication device, office equipment, industrial equ ipment etc.). the products mentioned herein shall not be intended for use for any "special application" (medica l equipment whose purpose is to sustain life, aerospace instrument, nuclear control device, burning appliances, t ransportation machine, traffic signal system, safety equipment etc.) that shall require extremely high level of re liability and can directly threaten human lives in case of failure or malfunction of the product or may cause har m to human bodies, nor shall they grant any guarantee thereof. if you should intend to use our products for app lications outside the standard applications of our customer who is considering such use and/or outside the scope of our intended standard applications, please consult with us prior to the intended use. if there is n o consultation or inquiry before the intended use, our customer shall be solely responsible for the use. LV8762T overview the LV8762T is an 1ch h-bridge driver that can control four operation modes (forward, reverse, brake, and standby) of a motor. the ic is optimal for use in driving brushed dc motors for office equipment. features ? forward/reverse h-bridge motor driver: 1 channel ? i o max = 1a ? built-in current limiter ? current limit mask function ? built-in thermal protection circuit ? alert signal output ? single power supply ? built-in short-circuit protection function (select able from latch-type or auto reset-type). specifications absolute maximum ratings at ta = 25 c parameter symbol conditions ratings unit supply voltage vm max 36 v output peak current i o peak tw 10ms, duty 20% 1.5 a output continuous current i o max 1.0 a logic input voltage v in max -0.3 to +6 v emo pin input voltage v emo -0.3 to +6 v allowable power dissipation pd max mounted on a specified board. * 1.4 w operating temperature topr -20 to +85 c storage temperature tstg -55 to +150 c * specified circuit board : 57mm 57mm 1.6mm, glass epoxy both-type board. bi-cmos lsi forward/reverse h-bridge driver orderin g numbe r : ena1926
LV8762T no.a1926-2/13 allowable operating ratings at ta = 25 q c parameter symbol conditions ratings unit supply voltage range vm 9 to 32 v vref input voltage vref 0 to 3 v logic input voltage v in 0 to 5.5 v electrical characteristics at ta = 25c, vm = 24v, vref = 1.5v ratings parameter symbol conditions min typ max unit general standby mode current drain imst st = ?l? 100 400 p a operating mode current drain im st = ?h?, in1 = ?h?, in2 = ?l?, with no load 3 5 ma reg5 output voltage vreg i o = -1ma 4.5 5 5.5 v thermal shutdown temperature tsd design guarantee * 150 180 200 q c thermal hysteresis width ' tsd design guarantee * 40 q c output block ronu i o = 1a, upper side on resistance 0.75 0.97 : output on resistance rond i o = -1a, under side on resistance 0.5 0.65 : output leakage current i o leak v o = 32v 50 p a diode forward voltage vd id = -1a 1.2 1.4 v rising time tr 10% to 90% 100 200 ns falling time tf 90% to 10% 100 200 ns tplh in1 to outa, in2 to outb (l o h) 550 750 ns input output delay time tphl in1 to outa, in2 to outb (h o l) 550 750 ns control system input block logic pin input h-level voltage v in h 2.0 v logic pin input l-level voltage v in l 0.8 v i in l v in = 0.8v 4 8 12 p a logic pin input current 1 i in h v in = 5v 30 50 70 p a vref input current iref vref = 1.5v -0.5 p a current limit comparator threshold voltage vtlim vref = 1.5v 0.291 0.3 0.309 v chop pin charge current i chop -6.5 -5 -3.5 p a chop pin threshold voltage vt chop 0.8 1 1.2 v cmk pin charge current i cmk -32.5 -25 -17.5 p a cmk pin threshold voltage vt cmk 1.2 1.5 1.8 v charge pump block step-up voltage vgh vm = 24v 27.7 28.7 29.7 v rising time tong vg = 0.1 p f 250 550 p s oscillation frequency fcp 90 125 155 khz short-circuit protection block emo output saturation voltage v emo i emo = 1ma 0.4 v scp pin charge current i scp scp = 0v -6.5 -5 -3.5 p a comparator threshold voltage vt scp 0.8 1 1.2 v * design guarantee value and no measurement is made.
LV8762T no.a1926-3/13 package dimensions unit : mm (typ) 3260a pin assignment sanyo : tssop24(225mil) 6.4 0.5 4.4 (0.5) (1.0) 6.5 0.5 0.15 1 12 24 13 0.22 0.08 1.2max 1 2 pgnd 3 4 5 6 outb 7 outb 8 rnf 9 rnf 10 vm emm scp vref in2 in1 reg5 11 vm cp1 12 outa cp2 13 outa 24 vg 14 nc 23 gnd 15 st 22 cmk 16 21 chop 17 20 18 19 emo top view LV8762T
LV8762T no.a1926-4/13 substrate specifications (substrate recommended for operation of LV8762T) size : 57mm 57mm 1.6mm (two-layer substrate) material : glass epoxy both-type board l1 : copper wiring pattern diagram l2 : copper wiring pattern diagram cautions 1) for the set design, employ the derating design with sufficient margin. stresses to be derated include the voltage, current, junctio n temperature, power loss, and mechanical stresses such as vibration, impact, and tension. accordingly, the design must ensure these stresses to be as low or small as possible. the guideline for ordinary derating is shown below : (1)maximum value 80% or less for the voltage rating (2)maximum value 80% or less for the current rating (3)maximum value 80% or less for the temperature rating 2) after the set design, be sure to verify the design with the actual product. confirm the solder joint state and verify also the re liability of solder joint for the exposed die-pad, etc. any void or deterioration, if observed in the solder jo int of these parts, causes deteriorated thermal conduction, possibly resulting in thermal destruction of ic. pd max - ta 0 1.0 1.5 0.5 2.0 1.40 0.73 ? 20 40 60 80 20 0 100 ambient temperature, ta - c allowable power dissipation, pd max - w
LV8762T no.a1926-5/13 block diagram tsd lvs gnd vm +- vg cp2 reg5 scp emm cp1 outb outa rnf pgnd vref in1 in2 m + - + - st chop cmk emo charge pump short-circuit protection circuit oscillation circuit output control logic output preamplifier stage output preamplifier stage reference voltage circuit current limiter circuit current limiter mask brake-time setting circuit
LV8762T no.a1926-6/13 pin functions pin no. pin name pin functtion equivalent circuit 18 19 1 in1 in2 emm output control signal input pin 1. output control signal input pin 2. short protection mode setting. vreg5 gnd 1 18 19 12 st standby mode setting vreg5 gnd 12 9, 10 3, 4 7, 8 5, 6 2 outa outb vm rnf pgnd outa output pin. outb output pin. motor power-supply connection pin. current sense resistor connection pin. power ground. gnd 3 4 7 8 10 9 5 6 2 14 8 16 15 vg vm cp1 cp2 charge pump capacitor connection pin. motor power-supply connection pin. charge pump capacitor connection pin. charge pump capacitor connection pin. gnd vreg5 16 15 8 14 continued on next page.
LV8762T no.a1926-7/13 continued from preceding page. pin no. pin name pin functtion equivalent circuit 20 vref reference voltage input pin for output current limit setting. gnd vreg5 20 17 reg5 internal reference voltage output pin. gnd vm 17 24 emo alert signal output vreg5 gnd 24 21 22 chop scp capacitor connection for current limit break time setting capacitor connection for short detection time setting gnd vreg5 22 21 23 cmk capacitor connection for current limit mask setting gnd vreg5 23
LV8762T no.a1926-8/13 dc motor driver 1.standby function this is can switch the standby ? operation mode by setting the st pin. on standby-mode, all logic circuit is reset, internal regurator is off, internal charge-pump is off. st mode 5v regurator charge pump ?l? or open standby mode standby standby ?h? operation mode on on 2.dcm output control logic contol input output st in1 in2 outa outb mode l * * off off standby h l l off off output off h h l h l cw (forward) h l h l h ccw (reverse) h h h l l brake 3.current limit control timing chart 4. setting the time of current limit brake value this ic can set the time of the current limit break by connecting the capacitor with chop-gnd. the value of the capacitor is decided acc ording to the following expression. brake time: t chop tchop slow charge outa outb output current limit current
LV8762T no.a1926-9/13 5.setting the current limit value the current limit value of the dcm driver is determined by the vref voltage and th e resistance (rnf) connected across the rnf and gnd pins using the following formula : ilimit [a] cmk mask of current limit ?l? no operation ?h? or open operation this function can be switched by cmk pin. this function can prevent the current limit from working by the motor start-up current when the current limit value is set low. 7. setting the time of the mask of current limit this ic can set the time of the mask of current limit by connection the capacitor with cmk-gnd. the value of the capacitor is decided according to the following expression. time of mask:t cmk
LV8762T no.a1926-10/13 output short-circuit protection function thils ic incorporates an output short-circuit protection circuit.it turns the output off to prevent destruction of the ic if a problem such as an output pin being shorted to the motor power supply or ground occurs. then short-circuit detected, alart signal is assert to emo pin. 1. output short protect mode this function can be switched by emm pin. emm pin is l or open then latch method, h then auto-retry method. emm pin method ?l? or open latch ?h? auto retry 2.protection function operation (latch method) the short-circuit protection circuit is activated when it detect s the output short-circuit state. if the short-circuit state continues for the internally preset period ( | 2 p s), the protection circuit turns off the output from which the short-circuit state has been detected. then it turns the output on again after a lapse of the timer latch time (t scp ) described later. if the short-circuit state is still detected, it changes all the outputs to the standby mode and retains the state. the latched state is released by setting the st to l. 3. protection function operation (auto retry method) in this mode, short-protection function try repeatedly to detecting short-circuit. the short-circuit detection circuit operates when a short output is detected as well as the latch method. the output is switched to the standby mode when the operation of the short-circuit detection circuit exceeds time (t scp ) of the timer latch, and it returns to the turning on mode again after 2ms(typ). at this time, the switching mode is repeated when is still in the overcurrent mode until the overcurrent mode is made clear. 4.unusual condition warning output pin (emo) the LV8762T is provided with the emo pin which notifies the cpu of an unusual condition if the protection circuit operates by detecting an abnormal condition of the ic. this pi n is of the open-drain output type, and if abnormality is detected, the emo output becomes (emo=l) of on. the emo pin is placed in the on state when one of the following conditions occurs. 1. shorting-to-power or shorting-to-ground occurs at the output pin and the output short-circuit protection circuit is activated. 2. the ic junction temperature rises and the thermal protection circuit is activated. h bridge output state output on output on outout off stand-by state threshold voltage scp voltage short-circuit detection state internal counter short- circuit short-circuit release 1st counter start 1st counter stop 1st counter start 1st counter end 2st counter start 2st counter end
LV8762T no.a1926-11/13 5.timer latch-up (t scp ) the user can set the time at which the outputs are turned off when a short-circuit occurs by connecting a capacitor (c scp ) across the scp and gnd pins. the value of the capacitor (c scp ) can be determined by the following formula : timer latch-up : t scp t scp | c scp vt scp i scp [sec] vt scp : comparator threshold voltage (1v typical) i scp : scp charge current (5 p a typical) thermal protection circuit this ic incorporates an thermal protec tion circuit, and the output is turned off when junction temperature tj exceeds 180 q c, and the abnormal state output (emo pin) is turned on at the same time. the outp ut is driven again when temperature hysteresis falling (automatic restoration). the overheating protection circuit doesn't guarantee protection and the destruction prevention of the set because it becomes operation by the area where ratings tjmax=150 q c of the junction temperature were exceeded. tsd = 180 q c (typical) ' tsd = 40 q c (typical) charge pump this ic makes ?h? st pin, and operate the charge pump circuit, and vg pin voltage step-up vm voltage to vm+reg5 voltage. use it after the time of tong or more passes when drives the motor. if it is not so, on-resistance cannot be secured. st vm+vreg5 vm+4v vm tong vg pin voltage
LV8762T no.a1926-12/13 application circuit example current limit value when vref = 1.5v, ilimit = vref 5 rnf = 1.5v 5 1 : = 0.3a setting the current limit regeneration time and short-circuit detection time t scp | c scp u vt scp i scp = 50pf u 1v 5 p a = 10 p s setting at current limit mask time t cmk 1 2 3 4 5 6 outb 7 outb 8 rnf 9 rnf 10 vm 24 emo 23 cmk 22 scp 21 chop 20 vref 19 18 in2 17 in1 16 15 reg5 11 vm 14 cp1 12 outa 13 cp2 outa nc st vg gnd LV8762T m -+ 0.1 f pgnd emm 50pf 50pf control input control input control input overcurrent detection monitor pin output current setting input
LV8762T ps no.a1926-13/13 sanyo semiconductor co.,ltd. assumes no responsib ility for equipment failures that result from using products at values that exceed, even momentarily, rate d values (such as maximum ra tings, operating condition ranges, or other parameters) listed in products specif ications of any and all sanyo semiconductor co.,ltd. products described or contained herein. sanyo semiconductor co.,ltd. strives to supply high-qual ity high-reliability products, however, any and all semiconductor products fail or malfunction with some probabi lity. it is possible that these probabilistic failures or malfunction could give rise to acci dents or events that could endanger human lives, trouble that could give rise to smoke or fire, or accidents that could cause dam age to other property. when designing equipment, adopt safety measures so that these kinds of accidents or e vents cannot occur. such measures include but are not limited to protective circuits and error prevention c ircuits for safe design, redundant design, and structural design. upon using the technical information or products descri bed herein, neither warranty nor license shall be granted with regard to intellectual property rights or any other rights of sanyo semiconductor co.,ltd. or any third party. sanyo semiconductor co.,ltd. shall not be liable f or any claim or suits with regard to a third party's intellctual property rights which has resulted from the use of the technical information and products mentioned above. information (including circuit diagr ams and circuit parameters) herein is for example only; it is not guaranteed for volume production. any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. when designing equi pment, refer to the "delivery specification" for the sanyo semiconductor co.,ltd. product that you intend to use. in the event that any or all sanyo semiconductor c o.,ltd. products described or contained herein are controlled under any of applicable local export control laws and regulations, such products may require the export license from the authorities conc erned in accordance with the above law. no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or any in formation storage or retrieval system, or otherwise, without the prior written consent of sanyo semiconductor co.,ltd. this catalog provides information as of february, 2 011. specifications and information herein are subject to change without notice.

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