L9177ATR datasheet(3/55 Pages) STMICROELECTRONICS

номер детали	L9177ATR

подробное описание детали	Automotive engine management control IC for small engines

PDF	55 Pages

Scroll/Zoom	100%

производитель	STMICROELECTRONICS [STMicroelectronics]

домашняя страница	http://www.st.com

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3 / 55 page

Block diagram and pin description

1.1

Block diagram

Figure 1. Block diagram

INJ2

GND_P_2

GND_P_1

TACH

OUTD

OUTC

GND_INJ2

GND O2H

GND_INJ1

REL3

REL2

REL1

O2H

OUTB

OUTA

INJ1

IN2

KEY

IN1

VROUT

VRIN-

VRIN+

KL_RX

KL_TX

IN_REL2

IN_REL1

ILS_TACH

REXT

PWM

RESET

SCK

/CS

DIR

VB_1

INO2H

RESET

Operating mode

Standby mode

5V regulator 300mA

Generator

Reference

Current

Interface

Sensor

Reluctance

Variable

HS switch 100mA

5V st-by V reg2.5mA

40mA

5V tracking Vreg

VDD

VDD_TRK

VDD_SB

HS_OUT

STEPPER MOTOR DRIVER

CURRENT LIMITED LOW SIDE DRIVER

RELAY DRIVER (3 CHANNELS)

O2 SENSOR HEATER

TACHOMETER DRIVER

INJECTOR DRIVER (2 CHANNEL)

Short to GND/VB

Over-current

Open Load

Diagnosis

Short to GND

Over-current

Open Load

Diagnosis

Short to GND

Over-current

Open Load

Diagnosis

Short to GND

Over-current

Open Load

Diagnosis

Short to GND

Over-current

Open Load

Diagnosis

Short to GND

Over-current

Open Load

Diagnosis

RON 2.6 ohm

Over-current>0.7A

RON 1.5 ohm

45V Clamp

(2A in-rush)

Over-current>1.2A

RON 0.5 ohm

45V Clamp

Over-current>1.2A

RON 0.5 ohm

60V Clamp

Over-current>4A

RON 5 ohm

Over-current>0.1A

RON 0.5 ohm

60V Clamp

Over-current>2.8A

KL_LINE

K-LINE

GND_A/GND_P

GAPGPS00585

L9177A

Block diagram and pin description

DS12175 - Rev 5

page 3/55

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