orderin g numbe r : en3947f monolithic digital ic low-saturation bidirectional motor driver for low-voltage drive lb1836m overview the lb1836m is a low-saturation two-channel bidirectional motor driver ic for use in low-voltage applications. the lb1836m is a bipolar stepper-motor driver ic that is ideal for use in pri n ters, fdds, cameras and other portable devices. features ? low voltage operation (2.5v min) ? lo w saturation voltage (upper transistor + lower transistor residual voltage ; 0.40v typ at 400ma). ? parallel co nnection (upper transistor + lower tr a n sistor residual voltage ; 0.5v typ at 800ma). ? se parate logic power supply and motor power supply ? brake function ? spark killer diodes built in ? th ermal shutdown circuit built in ? c ompact package (14-pin mfp) specifications absolute maximum ratings at ta = 25 c parameter symbol conditions ratings unit v cc max -0.3 to +10.5 v maximum supply voltage v s max -0.3 to +10.5 v output supply voltage v out v s + v sf v input supply voltage v in -0.3 to +10 v gnd pin flow-out current ignd per channel 1.0 a allowable power dissipation pd max * mounted on a board. 800 mw operating temperature topr -40 to +85 c storage temperature tstg -55 to +150 c * mounted on a substrate: 30 30 1.5mm 3 , glass epoxy board. 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. 31110 sy / 82207 ms / 71807 ms 200707 09-s00001 / 70407 ms pc 2007 0611-s00003 / 21097ha(ii) / d2293 / o0693(us) no.3947-1/6
lb1836m allowable operating ranges at ta = 25 c parameter symbol conditions ratings unit v cc 2.5 to 9.0 v supply voltage v s 1.8 to 9.0 v input ?h?-level voltage v ih 1.8 to 9.0 v input ?l?-level voltage v il -0.3 to +0.7 v electrical characteristics at ta = 25 c, v cc = vs = 3v ratings parameter symbol conditions min typ max unit i cc 0 v in 1, 2 , 3, 4 = 0v, i cc + i s 0.1 10 a i cc 1 v in 1 = 3v, v in 2, 3, 4 = 0v, i cc + i s 14 20 ma supply current i cc 2 v in 1, 2 = 3v, v in 3, 4 = 0v, i cc + i s 22 35 ma v out 1 i out = 2 00ma 0.20 0.28 v v out 2 i out = 4 00ma 0.40 0.60 v v out 3 i out = 4 00ma, parallel connection 0.25 0.35 v output saturation voltage (upper + lower) v out 4 i out = 8 00ma, parallel connection 0.50 0.70 v output sustain voltage v o (sus) i out = 4 00ma 9 v input current i in v in = 2 v, v cc = 6v 80 a spark killer diode reverse current i s (l eak) v cc 1, 2 = 9v 30 a forward voltage v sf i out = 4 00ma 1.7 v package dimensions unit : mm (typ) 3111a pd max -- ta ambient temperature, ta -- c allowable power dissipation, pd max -- mw 0 800 600 400 200 1000 ? 40 ? 20 8085 60 20 40 0 100 specified board : 30 301.5mm 3 glass epoxy 420 sanyo : mfp14s(225mil) 1 14 7 8 8.0 0.15 (1.0) 1.0 0.35 1.7max (1.5) 0.1 4.4 0.63 6.4 pin assignment 14 gnd 1 v cc 13 in3 2 in1 12 out3 3 out1 11 vs2 4 vs1 10 out4 5 out2 9 in4 6 in2 8 vcont 7 gnd lb1836m top vie w note) ground both gnd pins. no.3947-2/6
lb1836m block diagram in1 m out1 out2 vs1 10f vs2 m out3 out4 gnd gnd v cc in2 in3 in4 thermal shutdown controller controller truth table in1/3 in2/4 out1/3 out2/4 mode h l h l forward l h l h reverse h h l l brake l l off off standby no.3947-3/6
lb1836m design notes if large current flows on the power supply (v s ) line and the gnd line, then in some applications and layouts, misoperation due to line oscillation may result. the modes during which large current flows are as follows : ? motor surge current when the dc motor starts up or when it sh ifts rotation directions (forward ? reverse). ? passthrough current generated within the ic when shifting rotation directions (forward ? reverse) or when shifting from forward/reverse rotation to braking, or vice versa. the following points should be kept in mind regarding the pattern layout : ? keep the wiring lines thick and short in order to reduce wiring inductance between the power supply (v s ) and gnd. ? i nsert a passthrough capacitor near the ic. (maximum effect is obtained by inserting the passthrough capacitor between vs and the pin 7 gnd at the closest distance possible. ? if t he cpu and the lb1836m are mounted on separate boards and the difference between th e ground potential of each board is large, install resistors of about 10k in series between the cpu and the lb1836m inputs. vcont pin no.3947-4/6 i d = v z r (= constant) as shown in the above diagram, the vcont pin outputs the voltage of the band gap zener v z + v f (=1.93v). in normal use, this pin is left open. the drive current id is varied by the vcont voltage. howeve r, because the band gap zener is shared, it functions as a bridge. m out 300 out i d v cc v s in vcont v z
lb1836m no.3947-5/6 0 0.2 0.4 0.6 0.8 1.0 0 200 100 300 400 500 600 0 70 80 90 100 110 6040 80 100 120 140 020 ? 40 ? 20 160 v cc = v s = in = 3v in1 in2 0 0.1 0.3 0.2 0.4 0.5 0.6 ? 40 ? 20 0 20 40 60 80 100 120 140 v cc = v s = in = 3v v o (sat) = total value i o = 400ma i o = 200ma 0 4 8 12 16 20 24 ? 40 ? 20 0 20 40 60 80 120100 140 160 v cc = v s = in = 3v ? 20 0 20 40 60 80 120100 140 0 1 2 3 4 5 6 ? 40 160 v cc = v s = in = 3v 0 400 012345678910 100 200 300 v cc = v s = 3v in1 in2 in3 in4 28 02 134567891 0 0 4 8 12 16 20 24 1 1 v s = in = 3v output current, i o ?m a output saturation voltage, v o ambient temperature, ta ? c o i s ? ta ambient temperature, ta ? c s i cc ? ta i cc ? v cc ambient temperature, ta ? c current drain, i cc ?ma supply voltage, v cc ?v current drain, i cc ?ma output current, i o ?ma output saturation voltage, v o (sat) ? v ambient temperature, ta ? c input current, i in ? a v o (sat) ? i o input voltage, v in ?v in i in ? v in i in ? ta v o (sat) ? ta v o (sat) ? i o v ? (sat) 0 0.2 0.4 0.6 0.8 1.0 100 200 300 400 500 600 700 800 0 900 ? v (sat) output saturation voltage, v 1ch total parallel connection total ?m a break break current drain, i forward forward reverse reverse break ? a input current, i forward/reverse standby
lb1836m ps no.3947-6/6 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 probability. 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. 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 probability. 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. 0 4 8 12 16 20 24 02 1345678910 1 1 v cc = in = 3v supply voltage, v s ?v this catalog provides information as of january, 2007. specifications and information herein are subject to change without notice. this catalog provides information as of march, 2010. specifications and information herein are subject to change without notice. current drain, i s i s ? v s break ?m a forward/reverse standby
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