L9177 datasheet(1/49 Pages) STMICROELECTRONICS

Part #	L9177

Description	Peripheral on chip for low end engine control

PDF	49 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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1 / 49 page

This is information on a product in full production.

November 2013

DocID17617 Rev 1

1/49

L9177

Peripheral on chip for low end engine control

Datasheet

- production data

Features

 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)

 Lamp driver

– 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 Lamp 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

 Packaged in PowerSO46

PowerSO46

Table 1. Device summary

Order code

Package

Packing

L9177

PowerSO46

Tube

L9177TR

Tape and reel

www.st.com

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