L9912 datasheet(1/84 Pages) STMICROELECTRONICS

部品番号	L9912

部品情報	Automotive vehicle conform car alternator regulator IC

PDF	84 Pages

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メーカー	STMICROELECTRONICS [STMicroelectronics]

ホームページ	http://www.st.com

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1 / 84 page

This is information on a product in full production.

February 2017

DocID029639 Rev 2

1/84

L9912

Automotive vehicle conform car alternator regulator IC

Datasheet

- production data

Features

 AEC-Q100 qualified

 System in package smart power alternator

regulator and 8-bit microcontroller (non-

monolithic approach)

 Protected high/low side field pre-driver for

external MOS

 Field short circuit protection

 Regulated voltage driven by ECU

(programmable protocol driven)

 Regulated voltage thermally compensated

(without protocol)

 Lamp driver (wake up and warning detection)

 Self start function

 Load response control (LRC)

 Field monitor (FM) output

 Thermal shutdown

 Package TQFP44EP (10 x 10 mm)

Description

The L9912 is a controlled multifunctional

alternator regulator intended to be used in cars,

commercial and agricultural vehicles. It supports

12 V system. The control can be achieved

through different communication protocols: RCV,

PCM, C_term. It is a System-In-Package solution

with smart power alternator regulator IC coupled

with a 8-bit microcontroller (non-monolithic

approach). It includes the control section, fault

diagnostic circuit which drives a warning lamp,

and the protection against short circuits.

This device regulates in closed loop the output of

an automotive generator by controlling the field

winding current by means of a Pulse-Width

Modulation (PWM) of an external high side or low

side driver at fixed frequency.

TQFP44EP

www.st.com

同様の部品番号 - L9912

メーカー	部品番号	データシート	部品情報
STMicroelectronics	L9912L	1Mb / 84P	Automotive vehicle conform car alternator regulator IC with LIN 07-Feb-2017
STMicroelectronics	L9912LTR	1Mb / 84P	Automotive vehicle conform car alternator regulator IC with LIN 07-Feb-2017

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