rf ft ls8 t vd ; applicatioiu power ic liiame PA3005 model gm4 type silicone monolithic bipolar linear ic block diagram functions connection diagram pin no. strndrrd voltage (vl function and operation i 1.9 nf 2 3.5 de-coupling 3 0 i nput 4 0 gnd 5 1.4 aso protection circuit time constant 6 t.9 nf 7 6.9 output (reverse phase) i 13.1 boot strap 9 0 gnd 10 13.7 +vcc 11 13.1 boot strap 12 6.9 output (forward phase) 4 PA3005 8 v v v v
l i pin no. pin name stardard vohage lv) tlo function ard operation 8 out.2 + out drives the base of the forward motor driw transistor. play mode: 2.5 - 4y; ms, ff, rew modes: 2.5 - 4,8v 9 msjp-2 in forward motor stop input motor stop mode: 0v motor running mode: 0.7 - o.8v 10 nf.e + out music signal amp output. when no music, approximately 3v constant voltago. when music, an amplified waveform centered about 3v appears. 11 oe approx 3v in music search music signal amp input, 12 vdd povrer supply. 13 ?) p approx 3v in end sensing amp input. 14 nf.p out end sensing amp output. when the forward & reverse motor stopped. a constant voltag? of approximately 3v appears. wh?n both motors or one motor is rotating, a motor ripple voltage amplified waveform appears centerd about 3v. 15 ps out end sensing schmitt circuit output. when one motor is rotating, an "h" level spproximately 6v."l"level approximately 0v pulse waveform is generated in synchronization with the motor ripple voltage. when both motors are stopped, this pin becornes "h"level 16 es out music sensing schmitt circuit. when music sensed in the play and ms modes, an "h" level approx- imately 6v, "l" level approximately 0v pulsearuaveform is generated in synchronization with tho music signal. (ln all other cases, this pin becomes "h" level. 17 ejt normally ov out eject output when motor races in the play mode. a constant current is output when the motor races in the play mode. 18 p in play mode switching input. approx 0v in the play mode, approx 10v in other modes. 19 play adj.1 functions and operation are the same as those of pin 7. corresponds to the reverse motor. 20 lvlstp-1 in reverse motor stop input. voltage is the same as that of pin 9. 21 out-1 out corresponds to the reverse motor. functions and operation are the same as those of pin 8. 22 cd-1 out correspinds to the reverso motor. functions and operation are the same as those of pin 6, 23 (-) 1 in corresponds to the reverse motor. functions and operation are the sarne as those of pin 5. 24 (+) 1 in corresponds to the reverse motor. functions and operation are the same as tose of pin 4. \-
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