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L9484

February 2003

This is preliminary information on a new product now in development. Details are subject to change without notice.

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FOR AIR AND LIQUID COOLED

APPLICATIONS

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AMBIENT AIR TEMPERATURE

(THERMISTOR) COMPENSATED

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SPECIAL DEFAULT COMPENSATION

CURVE WITH TS-TERMINAL OPEN

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COMPENSATION CURVE WITH

APPLICATION SPECIFIC RESISTOR ON TS

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THERMAL PROTECTION

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FIELD DRIVER, LAMP DRIVER, RELAY

DRIVER, AND DF (FIELD MONITOR) SHORT

CIRCUIT PROTECTED

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LOAD RESPONSE CONTROL

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SINGLE PHASE AUTOSTART

DESCRIPTION

The L9484 is a monolithic multifunction generator

Voltage regulator intended for use in automotive

charging applications. This All Silicon Voltage Regu-

lator regulates the output of an automotive generator

by controlling the field winding current by means of a

variable frequency PWM high side driver.

MULTIWATT8

ORDERING NUMBER: L9484

PRODUCT PREVIEW

CAR ALTERNATOR VOLTAGE REGULATOR

Figure 1. Typical Application SchematicPIN DESCRIPTION

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NTC