AP43770

Document number: DS41284 Rev. 6 - 3

2 of 9

www.diodes.com

July 2020

© Diodes Incorporated

AP43770

Typical Applications Circuit

CY 1

R4

R8

C6

C3

C8

T1

U2

R19

C9

GND

GATE

FB

SENSE

VCC-IN

U1

Q1

D7

R6

R7

DEM

C4

R18

DRISR VCC

GND

VDD

AREF

VDET

R20

C12

Q2

U3

C7

C13

HV

VCC

CTRL

RT1

SR IC

R16

CC1

AGND

VFB_OUT

VIN_PS

U4

CC2

V5V

PWR_ENB

VBUS

VFB

IFB

TS

ISENP

RT2

C16

C17

C18

C19

R21

R 22

C20

R25

C11

DP

DN

Vo

GND

CON1

CC2

CC1

D -

D+

AC

R11

D5

F1

C5

NTC1

R10

BD1

C 2

L 2

R14

D6

C1

R15

C10

R13

R12

L1

R2

C21

V18V

PGND

R26

R27

AP43770

Q3

R24

PWM IC

Pin Descriptions

Pin Number

Pin Name

Description

1

V5V

LDO5V Output, 10µF to GND

2

IFB

CC Input. Negative Node of CC OPAM for Photocoupler

3

VFB

CV Input. Negative Node of CV OPAM for Photocoupler

4

AGND

Ground

5

DP

USB D+ Input

6

DN

USB D- Input

7

CC1

Type-C_CC1

8

CC2

Type-C_CC2

9

V18V

LDO1.8V Output, 0.1µF to GND

10

PGND

Ground

11

VBUS

VBUS Terminal for Discharge Path

12

PWR_ENB

External PMOS Gate Driver. To Control External MOS Switch:

0: To Enable VBUS Voltage

1: Disconnect VBUS

13

VIN_PS

High Voltage Power Input (VMAX = 32V)

14

ISENP

Input Current Sense Positive Node

15

TS

Source Current (100µA) to External NTC Sensor for External OTP (Over Temperature Protection)

16

VFB_OUT

CC / CV Output. Open-Drain Output for Photocoupler (For Example, TL431)