VNQ9080AJ datasheet(3/44 Pages) STMICROELECTRONICS

3 / 44 page

Block diagram and pin description

Figure 1. Block diagram

Logic

VCC

Gate driver

Clamp

VCC-OUT

limitation

Current

Sense

Current

Channel 0

control & diagnostic

shut- down

Undervoltage

Internal supply

GND

IN0

SEn

FaultRST

OUT0

Channel 1

Channel 2

Channel 3

OUT1

CH 1

CH 2

CH 3

IN1

IN2

IN3

SEL0

SEL1

CH 0

OUT2

OUT3

Open-Load in OFF

Power limitation

Overtemperature

VCC - GND

CLAMP

Table 1. Pin functions

Name

Function

VCC

Battery connection.

OUTPUT0,1,2,3

Power output

GND

Ground connection; must be reverse battery protected by an external diode / resistor network.

INPUT0,1,2,3

Voltage controlled input pin with hysteresis, compatible with 3 V and 5 V CMOS outputs;

controls output switch state.

analog current sense output pin; it delivers a current proportional to the selected load current.

SEn

Active high compatible with 3 V and 5 V CMOS outputs pin; enables the CS diagnostic pin.

SEL0,1

Active high compatible with 3 V and 5 V CMOS outputs pin; it addresses the CS multiplexer.

FaultRST

Active low compatible with 3 V and 5 V CMOS outputs pin; it unlatches the output in case of

fault - if kept low, sets the output to auto-restart mode.

VNQ9080AJ

Block diagram and pin description

DS12654 - Rev 7

page 3/44

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