BA3918 Datasheet System power supply for car stereos

Manufacturer: ROHM

BA3918 system power supply for car stereos by ROHM - Datasheet Preview

Datasheet Details

Part number	BA3918
Manufacturer	ROHM
File Size	153.04 KB
Description	System power supply for car stereos
Download	BA3918 Download (PDF)

General Description

s 243 Regulator ICs FInput / output circuits BA3918 244 Regulator ICs FElectrical characteristics (unless otherwise noted, Ta = 25_C and VCC = 13.2V) BA3918 245 Regulator ICs BA3918 FInput / output timing chart 246 Regulator ICs FEstimate of allowable power dissipation Except under transitional conditions, the power dissipation of this IC is 3W per unit at 25_C.

See Fig.

4 for thermal derating characteristics, including some cases where heat sinks are used.

Overview

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.

Key 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. FBlock diagram 242 Regulator ICs FAbsolute maximum ratings (Ta = 25_C) BA3918 FRecommended operating.

More Datasheets from ROHM

Part Number	Description
BA3910B	Power supply/ standard voltage
BA3911	Reference voltage power supply
BA3912	Power Supply
BA3913	Power Supply / Standard Voltage
BA3915B	System power supply for car stereos
BA3917	Generator
BA3902	Power supply/ standard voltage
BA3904A	Power supply/ standard voltage
BA3906	Power supply/ standard voltage
BA3924	Power supply for CD radio cassette players