Manual

251
Regulator ICs
System power supply for car stereos
BA4900
The BA4900 is a single-chip power supply IC for use in car stereo audio systems. The IC contains one 5.8V output for
a microcontroller, three 8V outputs, one 10V output, and two outputs interlocked with BACKUP and ACC systems.
Applications
Car stereo audio systems
Features
1) All output circuits, except AMP and ANT circuits, use
a PNP transistor with a low saturation voltage.
2) Output current limit circuit prevents damage to the IC
in the event output is short-circuited.
3) Overvoltage protection circuit provides protection
against surges from the ACC or BACKUP inputs.
4) Compact 12-pin POWER package allows a large
power dissipation.
5) Thermal protection circuit prevents heat damage to
the IC.
Absolute maximum ratings (Ta = 25C)
Recommended operating conditions (Ta = 25C)