L9468 Datasheet, PDF (1/8 Pages) STMicroelectronics – ALL SILICON VOLTAGE REGULATOR

L9468
ALL SILICON VOLTAGE REGULATOR
1 Features
■ FULLY MONOLITHIC DESIGN
■ HIGH SIDE FIELD DRIVE
■ THERMAL PROTECTION
■ FIELD DRIVER SHORT CIRCUIT
PROTECTION
■ PROTECTED DIAGNOSTIC LAMP DRIVER
■ REDUCED OUTPUT MODE
■ COMPLEX DIAGNOSTICS
■ LOAD RESPONSE CONTROL
2 Description
The L9468 is a monolithic multifunction generator
Voltage regulator intended for use in automotive ap-
Figure 2. Block Diagram
Figure 1. Package
Multiwatt8
Table 1. Order Codes
Part Number
L9468N
Package
Multiwatt8
plications.
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.
TO ECM
F_M
F+
FIELD
(ROTOR)
S
ASVR
G
FAULT
L
LAMP _{KEY SW}
V_GO
STARTER
BATTERY
P
LOADS
STATOR
RECTIFIER
BRIDGE
D02AT503
April 2005
Rev. 1
1/8