31110 sy/82207 ms/71807 ms 20070709-s00001/7 0407 ms pc/21097ha/d2293/o0693 no.3947-1/6 http://onsemi.com semiconductor components industries, llc, 2013 june, 2013 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 printers, fdds, cameras and other portable devices. features ? low voltage operation (2.5v min) ? low saturation voltage (upper transistor + lower transistor residual voltage ; 0.40v typ at 400ma). ? parallel connection (upper transistor + lower tr ansistor residual voltage ; 0.5v typ at 800ma). ? separate logic power supply and motor power supply ? brake function ? spark killer diodes built in ? thermal shutdown circuit built in ? compact 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. monolithic digital ic low-saturation bidirectional motor driver for low-voltage drive orderin g numbe r : en3947f stresses exceeding maximum ratings may damage the device. maximum ratings are stress ratings only. functional operation above the recommended oper ating conditions is not implied. extended exposure to stresses above the recommended operating conditions may affect device reliabili ty.
LB1836M no.3947-2/6 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 = 200ma 0.20 0.28 v v out 2 i out = 400ma 0.40 0.60 v v out 3 i out = 400ma, parallel connection 0.25 0.35 v output saturation voltage (upper + lower) v out 4 i out = 800ma, parallel connection 0.50 0.70 v output sustain voltage v o (sus) i out = 400ma 9 v input current i in v in = 2v, v cc = 6v 80 a spark killer diode reverse current i s (leak) v cc 1, 2 = 9v 30 a forward voltage v sf i out = 400ma 1.7 v package dimensions unit : mm (typ) 3111a pin assignment note) ground both gnd pins. 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 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 30 1.5mm 3 glass epoxy 420 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
LB1836M no.3947-3/6 in1 m out1 out2 vs1 10 f vs2 m out3 out4 gnd gnd v cc in2 in3 in4 thermal shutdown controller controller block diagram 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
LB1836M no.3947-4/6 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. ? insert 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 the 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 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 in v cc vcont v z v s
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 60 40 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 80 120 100 140 160 v cc = v s = in = 3v ? 20 0 20 40 60 80 120 100 140 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 134567891011 0 4 8 12 16 20 24 v s = in = 3v output current, i o ?ma output saturation voltage, v o (sat) ? v ambient temperature, ta ? c output saturation voltage, v o (sat) ? v i s ? ta ambient temperature, ta ? c current drain, i s ?ma 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 input current, i in ? a i in ? v in i in ? ta v o (sat) ? ta v o (sat) ? i o 0 0.2 0.4 0.6 0.8 1.0 100 200 300 400 500 600 700 800 0 900 1ch total parallel connection total break forward reverse break break forward/reverse standby forward reverse
LB1836M ps no.3947-6/6 0 4 8 12 16 20 24 02 134567891011 v cc = in = 3v supply voltage, v s ?v current drain, i s ?ma i s ? v s break forwar d/reverse standby on semiconductor and the on logo are registered trademarks of semiconductor components industries, llc (scillc). scillc owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. a listing of scillc?s product/patent coverage may be accessed at www.onsemi.com/site/pdf/patent-marking.pdf. scillc reserves the right to make changes without further notice to any products herein. scillc mak es no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does scillc assume any liability ar ising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequentia l or incidental damages. ?typical? parameters which may be provided in scillc data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. all operating parameters, including ?typicals? must be validated for each customer application by customer?s techn ical experts. scillc does not convey any license under its patent rights nor the rights of others. scillc products are not designed, intended, or authorize d for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other appli cation in which the failure of the scillc product could create a situation where personal injury or death may occur. should buyer purchase or use scillc products for any such unintended or unauthorized application, buyer shall indemnify and hold scillc and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of persona l injury or death associated with such unintended or unauthorized use, even if such claim alleges that scillc was negligent regarding the design or manufacture o fthe part. scillc is an equal opportunity/affirmative action employer. this literature is subject to all applicable copyright laws a nd is not for resale in any manner.
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