BA3918 Datasheet, PDF (1/9 Pages) Rohm – System power supply for car stereos

Regulator ICs
System power supply for car stereos
BA3918
The BA3918 is a single-chip power supply IC for use in car audio systems. One 5.6V output for a microcontroller, three
8.7V outputs, and two outputs interlocked by BACKUP and ACC systems are built in.
FApplications
Car audio systems
FFeatures
1) All outputs except AMP and ANT use a PNP transis-
tor with a low saturation voltage.
2) Output current limit circuit prevents damage to the IC
due to short-circuiting.
3) Overvoltage protection circuit provides protection
against surges from the ACC or BACKUP input.
4) Compact 12-pin POWER package allows large pow-
er dissipation.
5) Thermal protection circuit prevents heat damage to
the IC.
FBlock diagram
242