AP74701Q

Document number: DS46952 Rev. 2 - 2

2 of 22

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February 2025

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AP74701Q

Typical Applications Circuit

AP74701Q

ANODE

GATE

CATHODE

VCP

EN

GND

OFF

ON

Voltage Regulator

(DC/DC, LDO)

Car Batt.

or

DC Rail

SW

R1

R2

VBAT_MON

Pin Descriptions

Pin Name

Pin Number

Function

GATE

1

Gate driver out pin. Connects to gate of external nMOSFET

ANODE

2

Input supply and ANODE of Ideal diode. Connects to the source of external nMOSFET

VCP

3

Charge pump voltage output pin. Connect to external capacitor.

SW

4

Voltage sensing switch terminal. Internal switch is ON connecting ANODE to SW when EN is high. A resistor

divider from this pin to GND can be used to for adjustment for ADC full-scale range. When EN is low, the

switch is OFF disconnecting the resistor divider from the battery line thereby eliminating the leakage current.

GND

5

Ground pin

EN

6

Enable pin. Active high

NC

7

No Connect. Leave this pin float

CATHODE

8

CATHODE pin. Connects to the drain of external nMOSFET

Functional Block Diagram

ANODE

GATE

EN

CATHODE

Gate

Driver

Gate Driver and

Reverse Current

Control Logic

UVLO,

Internal Rails

EN

VCP

Charge Pump

SW

VA

EN

VDS

Clamp

VA

VC

GND

AP74701Q