L9177A

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Automotive peripheral on chip for low end engine control - TQFP

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  • L9177A is a device realized in ST BCD proprietary technology, able to provide the full set of power supplies and signal preprocessing peripherals needed to control a 2 Cylinder internal combustion Engine for Low End Application (e.g. small motorcycle, K-car, nautical engines, etc.).

    L9177A integrates a 5 V 300 mA main voltage regulator, a 5 V 40 mA tracking regulator for sensor supply and a 2.5 mA 5 V standby regulator.
    The two channels injector drivers, the O2 sensor heater and two relay drivers can be controlled both with parallel input and with SPI interface. One additional relay driver and the current limited low side driver are controlled by SPI. The stepper motor driver is designed for a double winding coil motor, used for engine idle speed control.
    Low side drivers implement SR control to minimize emission.
    A protected 50 mA high side driver is provided.
    A Variable Reluctance Sensor interface allows the connection to a commercial magnetic pick-up, allowing the indirect measurement of internal combustion engine crank angle. A K-line (standard ISO-9141 compatible) is provided as data communication interface.
    All functionalities are fully protected and provide complete diagnostics via a 24-bit SPI interface. An overall protection against over temperature is provided as well.
    The device is available in TQFP64 10x10 mm package with exposed pad for power dissipation optimization.

    Key Features

    • AEC-Q100 qualified
    • Supply voltage from 6 V to 18 V
      • Basic functionality guaranteed down to 3.9 V
    • 5 V regulator up to 300 mA with thermal shutdown protection in current limitation condition
    • 5 V tracking regulator up to 40 mA and short to battery protection
    • 5 V standby regulator up to 2.5 mA
    • 2 channels injectors drivers
      • Parallel and serial driving
      • Output internally clamped to 60 V
      • Minimum overcurrent at 2.8 A
      • Ron 0.6 Ω worst case (at Tj = 150 °C)
    • 3 relay drivers
      • 2 with parallel and serial driving, 1 with serial driving
      • Output internally clamped to 45 V
      • Minimum guaranteed output current 1 A
      • Ron 1.5 Ω worst case (at Tj = 150 °C)
    • Tachometer driver
      • Parallel and serial driving
      • Minimum guaranteed output current 25 mA
      • Ron 5 Ω worst case (at Tj = 150 °C)
    • Current limited low side driver (LSD)
      • Serial driving
      • Output internally clamped to 45 V
      • Minimum guaranteed output current 1 A (2 A during in-rush)
      • Ron 1.5 Ω worst case (at Tj = 150 °C)
    • Stepper motor driver
      • Parallel driving
      • Minimum guaranteed output current 500 mA - full step
      • Ron 2.6 Ω worst case on the diagonal (at Tj = 150 °C)
    • O2 sensor heater
      • Parallel and serial driving
      • Output internally clamped to 45 V
      • Minimum guaranteed output current 3 A
      • Ron 0.5 Ω worst case (at Tj = 150 °C)
    • Protected high side driver
      • 100 mA min. current limitation threshold
    • Full diagnosis by SPI
      • Injector driver: OL, STG, OC
      • Relay and current limited LSD drivers: OL, STG, OC
      • O2 sensor heater: OL, STG, OC
      • Tachometer: OL, STG, OC
      • Stepper motor driver: OL, STG, STB, OC
      • general diagnostic: over-temperature
    • Protection for STB, STG (for stepper motor drivers and tracking regulator)
    • Self configuring variable reluctance sensor interface
    • K-line transceiver
    • Microcontroller reset logic
    • Small Factor form package TQFP64 10 x 10 mm exposed pad down

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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
L9177ATR TQFP 64 10x10x1.0 Tape And Reel -40 150
Active
4.3 1000 EAR99
MORE INFO

Country of Origin:

MALAYSIA

Check Availability

Distributor availability ofL9177ATR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 530 1 Order Now
MOUSER WORLDWIDE 396 1 Order Now
Farnell Element14 EUROPE 128 1 Order Now

Distributor reported inventory date: 2019-12-12

Distributor Name

DIGIKEY

Stock

530

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

396

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

128

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-12-12

Buy now
L9177A TQFP 64 10x10x1.0 Tray -40 150
Evaluation
4.3 1000 EAR99
MORE INFO

Country of Origin:

-

No availability of distributors reported, please contact our sales office

L9177ATR

Package

TQFP 64 10x10x1.0

Packing Type

Tape And Reel

Unit Price (US$)

4.3*

Distributor availability ofL9177ATR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 530 1 Order Now
MOUSER WORLDWIDE 396 1 Order Now
Farnell Element14 EUROPE 128 1 Order Now

Distributor reported inventory date: 2019-12-12

Distributor Name

DIGIKEY

Stock

530

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

396

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

128

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-12-12

Operating Temperature (°C)

(min)

-40

(max)

150

Marketing Status

Active

Unit Price (US$)

4.3

Quantity

1000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

L9177A

Package

TQFP 64 10x10x1.0

Packing Type

Tray

Unit Price (US$)

4.3*

Operating Temperature (°C)

(min)

-40

(max)

150

Marketing Status

Evaluation

Unit Price (US$)

4.3

Quantity

1000

ECCN (US)

EAR99

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

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Evaluation Tools

    • Part Number

      Evaluation board for L9177A

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS12175
      Automotive engine management control IC for small engines
      4.0
      1,018.04 KB
      PDF
      DS12175

      Automotive engine management control IC for small engines

    • Description Version Size Action
      AN5319
      Lamp switch management with L9177A
      1.1
      887.98 KB
      PDF
      AN5319

      Lamp switch management with L9177A

Publications and Collaterals

    • Description Version Size Action
      STMicroelectronics enables electronic control of the next generation of Gasoline Direct Injection (GDI) engines. 1.0
      822.68 KB
      PDF

      STMicroelectronics enables electronic control of the next generation of Gasoline Direct Injection (GDI) engines.

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
L9177A
Evaluation
TQFP 64 10x10x1.0 Automotive Ecopack2
L9177ATR
Active
TQFP 64 10x10x1.0 Automotive Ecopack2

L9177A

Package:

TQFP 64 10x10x1.0

Material Declaration**:

PDF XML

Marketing Status

Evaluation

Package

TQFP 64 10x10x1.0

Grade

Automotive

RoHS Compliance Grade

Ecopack2

L9177ATR

Package:

TQFP 64 10x10x1.0

Material Declaration**:

PDF XML

Marketing Status

Active

Package

TQFP 64 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.

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