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BA6780FP-Y Datasheet

  • BA6780FP-Y

  • 2-channel driver for CD changers

  • 14頁

  • ROHM

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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.
Applications
Changers for CD players and MD players.
Features
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.
Absolute maximum ratings
(Ta = 25擄C)
Parameter
Power supply voltage
Logic input voltage
Power dissipation
BA6780
BA6780FP-Y
Maximum current consumption
Operating temperature
Storage temperature
Imax
Topr
Tstg
Symbol
V
CC
V
FIN,
V
RIN
Pd
Limits
18
22
1.31
鈭?
1.45
鈭?
1.4
鈭?
鈭?5鈭?75
鈭?5鈭?150
W
A
藲C
藲C
Unit
V
V
鈭?
When a DIP18 package is used.Reduced by 10.48mW for each increase inTa of 1藲C over 25藲C.
鈭?
When mounted on a PCB board (70mm脳70mm, t=1.6mm glass epoxy board).
Reduced by 11.6mW for each increase in Ta of 1藲C over 25藲C.
鈭?
Should not exceed Pd or ASO values.
Recommended operating conditions
(Ta = 25擄C)
Parameter
Power supply voltage
Input voltage for Vin
Symbol
V
CC
V
IN
Limits
7鈭?6
0鈭糣
CC
/ 2鈭?.0
Unit
V
V

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