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L9177ATR

  • L9177ATR

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L9177ATR Overview

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.

Features

  • AEC-Q100 qualified
  • Supply voltage from 6 V to 18 V
  • Basic functionality guaranteed down to 3.9 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)
  • 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)
  • 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)
  • 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)
  • 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)
  • 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)
  • 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
  • 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
  • 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
L9177ATR
L9177ATR

Product Parameters

  • prmis_id

    CP428695

  • item_name

    L9177ATR

  • p_445

  • p_1387

    3.4379

  • p_4418

    1000

  • parent_id

    PF265064

  • p_4906

    false

  • p_5113

    0

  • p_163

    Active

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Other distributor's price

Distributor Part # Mfg. Description Price
digikey L9177ATR STMicroelectronics IC PTS SMARTPOWER 64TQFP

1---$10.3000

10---$9.3010

25---$8.8680

100---$7.7000

250---$7.3540

500---$6.7051
mouser L9177ATR STMicroelectronics Power Management Specialized - PMIC Automotive engine management control IC for small engines

1---$10.3000

10---$9.3000

25---$8.8700

100---$7.7000

250---$7.3500

500---$6.7000

1000---$6.5200
newark L9177ATR STMicroelectronics Peripheral On Chip, Aec-Q100, Tqfp-64, Ic Function:Power Management Ic, Supply Voltage Min:6V, Supply Voltage Max:18V, Ic Package Type:Tqfp, No. Of Pins:64Pins, Operating Temperature Min:-40°C, Operating Temperature Max:125°C, Rohs Compliant: Yes |Stmicroelectronics L9177ATR

1---$10.8200

10---$9.7800

25---$9.3100

50---$8.7000

100---$8.0900

250---$7.7300

500---$7.0500

1000---$6.8500
avnet L9177ATR STMicroelectronics Peripheral on chip for low end engine control - Tape and Reel (Alt: L9177ATR)

1000---$6.0603

2000---$5.9379

4000---$5.8154

6000---$5.6930

8000---$5.5706

10000---$5.4481

100000---$5.3257

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