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L9466N

P1-P3P4-P6P7-P9P10-P11
September 2013 Rev 3 1/11
11
L9466
Car alternator voltage regulator
Features
■ For air and liquid cooled applications
■ DF output (inverted field monitor)
■ Thermal protection
■ FIeld driver, lamp driver, relay driver, and DF
(field monitor) short circuit protected
■ Load response control
■ Single phase autostart
Description
The L9466 is a monolithic multifunction generator
Voltage regulator intended for use in automotive
charging applications.
This All Silicon Voltage Regulator regulates the
output of an automotive generator by controlling
the field winding current by means of a variable
frequency PWM high side driver.
Multiwatt8
Table 1. Device summary
Order code Package Packing
L9466N Multiwatt8 Tube
www.st.com
Contents L9466
2/11
Contents
1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
5 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
L9466 Block diagram
3/11
1 Block diagram
Figure 1. Block diagram
Fault
Lamp
Relay
L
VGO
P
R
To
ECM
DF
C
Field
(Rotor)
Rectifier
Bridge
F+
Key SW.
Starter
Stator
Battery
Loads
ASVR
P1-P3P4-P6P7-P9P10-P11

L9466N

Mfr. #:
Buy L9466N
Manufacturer:
STMicroelectronics
Description:
Linear Voltage Regulators Car Alternator Voltage Regulator
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

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