1

Block diagram and pin description

Figure 1. Block diagram

Control & Diagnostic

VCC

VON

Limitation

Current

Limitation

VCC – OUT

Clamp

Internal supply

OUTPUT

Current

Sense

GND

Undervoltage

shut-down

VCC – GND

Clamp

Fault

T

Short to VCC

Open-Load in OFF

Overtemperature

Power Limitation

T

VSENSEH

INPUT

SEL0

SEL1

SEn

MultiSense

FaultRST

VCC

Gate Driver

GAPGCFT00328

Table 1. Pin functions

Name

Function

VCC

Battery connection.

OUTPUT

Power outputs.

GND

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

INPUT

Voltage controlled input pin with hysteresis, compatible with 3 V and 5 V CMOS outputs. It controls output switch

state.

MultiSense

Multiplexed analog sense output pin; it delivers a current proportional to the selected diagnostic: load current,

supply voltage or chip temperature.

SEn

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

SEL0,1

Active high compatible with 3 V and 5 V CMOS outputs pin; they address the MultiSense 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 outputs in auto-restart mode.

VN7040AJ, VN7040AS

Block diagram and pin description

DS10829 - Rev 5

page 3/45