C-terminal alternator voltage regulator (CTAVR)

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  • The device is a monolithic alternator voltage regulator intended for use in automotive application.

    It includes the control section, the field power stage, fault diagnostic circuit which drives a warning lamp, and the protection against short circuits.
    This device regulates in close loop the output of an automotive generator by controlling the field winding current by means of a pulse-width modulation (PWM) high side driver at fixed frequency.
    The set-point voltage reference selected by the Engine Control Unit via C-terminal protocol is temperature flat. An internal voltage reference thermally compensated is present in the device and used when the protocol coming from ECU is absent or the wire is broken.
    A self-bias circuitry is present on L pin in order to turn-on the warning lamp also when the device is not supplied (battery connection broken).

    Key Features

    • Fully monolithic design
    • High side field driver
    • Field short circuit protection
    • Regulated voltage driven by ECU (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

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Part Number
Package
Packing Type
Temperature (°C) Marketing Status
Budgetary Price (US$)*
Quantity
ECCN (US)
More info
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min
max
L9915-CB MW 8L Tube -40 150
Active
5.3 1000 EAR99
MORE INFO

Country of Origin:

MOROCCO

Check Availability

Distributor availability ofL9915-CB

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 498 1 Order Now

Distributor reported inventory date: 2019-09-12

Distributor Name

MOUSER

Stock

498

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-09-12

Buy now

L9915-CB

Package

MW 8L

Packing Type

Tube

Unit Price (US$)

5.3*

Distributor availability ofL9915-CB

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 498 1 Order Now

Distributor reported inventory date: 2019-09-12

Distributor Name

MOUSER

Stock

498

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-09-12

Operating Temperature (°C)

(min)

-40

(max)

150

Marketing Status

Active

Unit Price (US$)

5.3

Quantity

1000

ECCN (US)

EAR99

Country of Origin

MOROCCO

(*) 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

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Technical Documentation

    • Description Version Size Action
      DS10356
      C-terminal alternator voltage regulator (CTAVR)
      1.1
      433.93 KB
      PDF
      DS10356

      C-terminal alternator voltage regulator (CTAVR)

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
L9915-CB
Active
MW 8L Automotive Ecopack1

L9915-CB

Package:

MW 8L

Material Declaration**:

PDF XML

Marketing Status

Active

Package

MW 8L

Grade

Automotive

RoHS Compliance Grade

Ecopack1

(**) 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.