AP74700Q

Document number: DS45004 Rev. 3 - 2

2 of 21

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July 2022

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AP74700Q

Typical Applications Circuit

AP74700Q

ANODE

GATE

CATHODE

VCP

EN

GND

OFF

ON

Voltage

Regulator

(DC/DC,

LDO)

TVS

(Note 4)

Car Batt.

or

DC Rail

Note:

4. Appropriate TVS is required to meet ISO 7632-2 and ISO 16750-2 requirements for automotive applications.

Pin Descriptions

Pin Name

Pin Number

Function

VCP

1

Charge pump voltage output pin. Connects to external capacitor.

GND

2

Ground pin.

EN

3

Enable pin. Active high.

CATHODE

4

CATHODE pin. Connects to the drain of external MOSFET.

GATE

5

Gate driver out pin. Connects to gate of external MOSFET.

ANODE

6

Input supply and ANODE pin. Connects to the source of external MOSFET.

Functional Block Diagram

ANODE

VCP

GATE

EN

GND

CATHODE

Gate

Driver

AP74700Q

CONTROL LOGIC

with

Comparators & Gm AMP

(Regulation (20 mV) /

Full Conduction (50 mV) /

Reverse Voltage (-10 mV)

Charge

Pump

UVLO

EN