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  • 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.

    Key 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)

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STMicroelectronics - L9912

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
L9912TR
Active
TQFP 44 10x10x1.0 Automotive Ecopack2

L9912TR

Package:

TQFP 44 10x10x1.0

Material Declaration**:

PDF XML

Marketing Status

Active

Package

TQFP 44 10x10x1.0

Grade

Automotive

RoHS Compliance Grade

Ecopack2

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

Sample & Buy

Part Number
Order from Distributors
Order from ST
Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Country of Origin
Budgetary Price (US$)*/Qty
min
max
L9912TR No availability of distributors reported, please contact our sales office
Active
EAR99 NEC Tape And Reel TQFP 44 10x10x1.0 -40 150 -

L9912TR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

TQFP 44 10x10x1.0

Operating Temperature (°C)

(min)

-40

(max)

150

Budgetary Price (US$)* / Qty

Country of Origin

-

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors