r eversible motor driver BA6208/BA6208f description outline drawing the BA6208/BA6208bf are monolithic ics used for driving reversible motors. they allow control of reversible motors in cassette players and other electrical equipment by using ttl-level logic signals. the ics contain a logic section, which controls forward and reverse rotations as well as forced stop, and an output power section, sip9 which can supply an output current of up to 100ma (typical) according to the logic control. feature motor driving power transistors are built in (100ma typically) brake is applied when stopping the motor sop8 (when in-puts a and b are both high level). built-in diode to absorb surge currents. very low standby circuit current when inputs a and bare both low level. wide range of operating supply voltage (4.5~15.0v). direct control with the ttl logic. tiger electronic co.,ltd
BA6208/BA6208f block diagram q2 q7 r1 r2 q3 q1 q4 r4 q5 r5 r12 r3 d1 q9 r28 r11 r13 q8 q10 r32 q17 q14 r26 r25 q18 q20 q16 r23 q15 r22 r20 r24 d2 q13 r29 r21 r14 q12 q11 r27 r6 q6 r8 r7 r9 r10 r18 q19 r15 r19 r16 r17 3(8) 2(5) a in b in 8(4) 7(2) a out b out r30 r31 6(1) vcc 5(3,7) gnd note: figures in parentheses are for the sop8 pin connection 9 8 7 6 5 12 3 4 nc b anc gnd vcc b a nc BA6208 in in out out
BA6208/BA6208f absolute maximum ratings (ta=25 c) characteristic symbol value unit power supply voltage vcc 18 v maximum output current io 500 ma power dissipation p d 700 mw operating temperature topr -20~60 c storage temperature tstg -55~125 c note: reduced by 7 mw for each increase in ta of 1 c over 25 c electrical characteristics (unless otherwise specified: ta=25 c, vcc=9v) characteristics test conditions symbol min. typ. max. unit output current io 200 ma output saturation voltage io=100ma v ce 1.0 1.6 v input high level voltage v ih 2.0 v input low level voltage v il 0.8 v standby supply current when input a and b both low level i st 0.4 ma input high level current v ih =4.5v i ih 250 400 a a diode that absorbs at least 500 ma is built in to give protection against surge currents with a pulse width of 10 ms and a duty ratio of 10% or less. recommended operating conditions (ta=25 c) parameter symbol min. typ. max. unit power supply voltage vcc 4.5 15 v input truth table 3pin (ain) 2pin (bin) 8pin (aout) 7pin (aout) h l h l l h l h h h l l l l open open
BA6208/BA6208f application circuit sip9 package sop8 package
|
