1 Features

■ High side field driver

■ Thermal protection

■ Field driver short circuit protection

■ RVC interface

■ Overvoltage protection

■ Complex diagnostics

■ Load Response Control

2 Description

The L9474 is a monolithic multifunction generator

Voltage regulator intended for use in automotive applications.

This device regulates the output of an automotive

generator by controlling the field winding current by

means of a variable frequency PWM high side driver.

The setpoint voltage reference is selected by the ENGINE CONTROL UNIT via RVC protocol.