BA3918 Datasheet – Power Supply IC – Rohm

Part Number : BA3918

Function : System power supply for car stereo

Package : SIP 12 Pin Type

Manufacturers : ROHM Semiconductor

Image and Pinouts :

BA3918 datasheet


Description :

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.

Block Diagram :

Features :

1) All outputs except AMP and ANT use a PNP transistor 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 power dissipation.

5) Thermal protection circuit prevents heat damage to the IC.


Applications :

1) Car audio systems


Other data sheets within the file : BA3915B, BA4900

BA3918 Datasheet PDF Download

BA3918 pdf