rev.1.0, sep.19.2003, page 1 of 8 M54641L/fp bi-directional motor driver with brake function rej03f0043-0100z rev.1.0 sep.19.2003 description the m54641 is a semiconductor integrated circuit that is capable of directly driving a smallsize bi-directional motor rotating in both forward and reverse directions. features ? wide range of operating voltage (v cc = 4 ? 10v,v cc ? (max) = 20v) ? low output saturation voltage in stationary motor circuit (largevoltage across motors) ? built-in clamp diode ? provided with output voltage control pin (v z ) ? built-in thermal shutdown circuit (tj(shut) = 120 c standard) application sound equipment such as tape deck and radio cassette, and vtr function the m54641 is an ic for driving a smallsize bi-directional motor that rotates in both forward and reverse directions. giving signal to inputs in1 and in2 outputs the signal of the same phase to output pins o1 and o2. that is, giving high-level signal to input in1 and low-level signal to input in2 sets output o1 to high-level and output o2 to low-level. connection of a motor between output pins o1 and o2 uses o1 as an output current source and o2 as an output current sink to rotate the motor. in addition, giving the reverse signal to inputs in1 and in2 sets o1 and o2 to low-level and high-level, respectively, resulting in rotating the motor reversely. however, when both in1 and in2 are set to ? h ? , both o1 and o2 are set to low-level, resulting in sudden stop of motor rotation. (brake mode) if the zener diode of certain voltage, for example, is added to the v z pin, the output ? h ? voltage does not rise over the zener voltage and the motor rotates at constant speed. if the v z pin is connected to the output power supply v cc ? pin, the rotating speed of the motor can be varied by varying the v cc ? voltage. the motor rush current and the current with the motor put in stationary status are as follows: iop(max) = 800ma and i o (max) = 150ma.
M54641L/fp rev.1.0, sep.19.2003, page 2 of 8 pin configuration outline 8p5 output voltage control power supply output 2 input 2 output power supply input 1 output 1 1 4 3 2 5 6 7 8 v z v cc o 2 in 2 v cc in 1 o 1 gnd 10 7 8 9 1 4 3 2 6 5 outline 10p2-c v z in 2 v cc o 1 nc output voltage control input 2 output power supply output 1 gnd in 1 v cc o 2 nc input 1 output 2 power supply nc: no connection M54641L m54641f p logic truth table input output in1 in2 o oo o 1 o oo o 2 remarks l off state off state no operation of ic h l h l ex forward rotation l h l h reverse rotation h h l l brake
M54641L/fp rev.1.0, sep.19.2003, page 3 of 8 block diagram power supply v cc output power supply v cc constant voltage source output voltage control v z output 2 o 2 output 1 o 1 input circuit input circuit control circuit output circuit output circuit input 1 in 1 input 2 in 2 gnd though the ic is equipped with a thermal shutdown circuit for prevention against thermal breaking, the threshold temperature is set to 100 c min. set the driving current in such a way that this thermal shutdown circuit cannot operate during normal operation. v cc output gnd v z output circuit input circuit 1 2 gnd v cc 15k 1k ininput
M54641L/fp rev.1.0, sep.19.2003, page 4 of 8 absolute maximum ratings (ta = 25c, unless otherwise noted.) parameter symbol ratings unit conditions supply voltage v cc ? 0.5 to +12 v output supply voltage v cc ? 0.5 to +20 v input voltage v i 0 to vcc v viM54641L) junction temperature tj 100 c operating temperature topr ? 10 to 60 c storage temperature tstg ? 55 to 125 c recommended operating condition (ta = 25c, unless otherwise noted.) limits parameter symbol min. typ. max. unit supply voltage v cc 4 5 10 v output current i o 100 ma h input voltage v ih 3.0 v cc v l input voltage v il 0 0.6 v motor braking interval t s 10 100 ms operation temperature of thermal protection circuit (junction temperature) t s 100 120 c electrical characteristics (ta = 2 5 c, v cc = 5.0v, unless otherwise noted.) limits parameter symbol min. typ. max. unit test conditions output leak current i o (leak) 100 a v o = 20v ? 100 v cc = 20v v z : open v o = 0v h output saturation voltage v oh 10.2 10.5 v i oh = ? 50ma 10.0 10.4 v cc = 12v v z : open i oh = ? 100ma l output saturation voltage v ol 0.1 0.3 v i oh = 50ma 0.2 0.4 v cc = 12v v z : open i oh = 100ma voltage between outputs (1) and (2) (voltage across motor) v o1-o2 6.3 7.0 7.7 v v cc = 12v v z = 7v i o = 100ma input voltage i i 100 180 a v cc = 12v v i = 3v output open 240 380 v i = 5v supply current i cc 1.2 3.0 ma in off state 4.5 8.0 forward rotation or reverse rotation 7.5 12.0 v cc = 10v v cc = 12v output open braking
M54641L/fp rev.1.0, sep.19.2003, page 5 of 8 typical characteristics condition ? with basic installation (epoxy board of 5cm x 5cm x 0.8mmt with copper foil on a single side) ? t : power apply time 0 thermal derating (M54641L) (absolute maximum rating) 25 50 60 75 100 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 power dissipation p d(max) (w) ambient temperature t a (c) t = 20 sec t = t = 10sec 0 thermal derating (m54641fp) (absolute maximum rating) 25 50 60 75 100 0 0.2 0.4 0.6 0.8 power dissipation p d(max) (w) ambient temperature t a (c) h output saturation characteristics t a = 25c v cc = 12v v z = open 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 h output current i oh (ma) h output voltage v cc -v oh (v) 0 -50 -100 -150 -200 l output saturation characteristics t a = 25c v cc = 12v v z = open 0 0.1 0.2 0.3 0.4 0.5 l output current i ol (ma) l output voltage v ol (v) 0 50 100 150 200
M54641L/fp rev.1.0, sep.19.2003, page 6 of 8 application example 876543 21 m 2 v b 10 100 f in 1 in 2 10 9 8 7 6 1 2 3 4 5 m v b in 1 in 2 3 10 100 f M54641L m54641fp 2 3 cautions since the thermal protection function of this ic may not work in abnormal status (oscillation, low supply voltage, output short-circuit, etc.), check the operation in the ic installation status when using this function. when the motor back electromotive force is large with the brakes applied, for example, malfunction may occur in internal parasitic di. if flyback current of 1a or more flows, add schottky di to the portion between the output and the gnd. when the ic is used at a high speed for pwm, etc., note that switching of output results in delay of approx. 10 s.
M54641L/fp rev.1.0, sep.19.2003, page 7 of 8 package dimensions weight(g) 0.73 jedec code lead material cu allo y sip8-p-340-2.54 eiaj package code 8p5 plastic 8pin 340mil sip 6.4 19.2 18.8 symbol min nom max a a 2 b 1 b b 2 c d e e 1 l dimension in millimeters a 1 3.0 2.54 1.3 1.2 1.1 3.0 2.8 2.6 19.0 0.34 0.27 0.22 1.15 0.85 0.75 1.5 1.2 1.1 0.6 0.5 0.4 1.2 8.3 e d a 2 a 1 a l 8 b 2 b 1 b e seating plane 1 c e 1 e
M54641L/fp rev.1.0, sep.19.2003, page 8 of 8 sop10-p-300-1.27 weight(g) ? 0.12 jedec code eiaj package code lead material alloy 42/cu alloy 10p2-c plastic 10pin 300mil sop symbol min nom max a a 2 b c d e h e l l 1 y b 2 dimension in millimeters a 1 i 2 0.05 ?? ? 1.75 ? 0.4 0.45 0.55 0.13 0.15 0.2 5.93 6.13 6.33 5.1 5.3 5.5 ? 1.27 ? 7.82 8.12 8.42 0.3 0.5 0.7 ? 1.41 ? ?? 0.1 0? 10? 0.76 7.62 1.27 2.15 e e 1 10 6 5 1 h e e d e y f a a 2 a 1 l 1 l c detail f e b 2 e 1 i 2 recommended mount pad x z 1 0.525 0.675 0.25 z z z 1 detail g b x m g
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