BA6780FP-Y

BA6780 / BA6780FP-Y Optical disc ICs 2-channel driver for CD changers BA6780 / BA6780FP-Y The BA6780 and BA6780FP-Y are 2-channel driver IC for CD changers that inculdes a reversible, variable speed electronic governor and a reversible driver. On sets that have dual-rail power supplies, the BA6780 and BA6780FP-Y can be operated from just the negative supply to reduce influence on the positive power supply. The input uses PWM control, and it is possible to directly input from a microprocessor running off the positive power supply. zApplications Changers for CD players and MD players. zFeatures 1) Output voltage can be freely set using the output voltage setting pin. 2) Internal mute function if the power supply voltage drops. 3) Thermal shutdown function. (Contains hysteresis) 4) PWM input. 5) Settable reference voltage output pin. 6) Wide operating supply voltage. zAbsolute maximum ratings (Ta = 25°C) Parameter Power supply voltage Logic input voltage Power dissipation BA6780 BA6780FP-Y Maximum current consumption Operating temperature Storage temperature Imax Topr Tstg Symbol VCC VFIN, VRIN Pd Limits 18 22 1.31 ∗1 1.45 ∗2 1.4 ∗3 −25∼+75 −55∼+150 W A ˚C ˚C Unit V V ∗1 When a DIP18 package is used.Reduced by 10.48mW for each increase inTa of 1˚C over 25˚C. ∗2 When mounted on a PCB board (70mm×70mm, t=1.6mm glass epoxy board). Reduced by 11.6mW for each increase in Ta of 1˚C over 25˚C. ∗3 Should not exceed Pd or ASO values. zRecommended operating conditions (Ta = 25°C) Pa...