AP3302

Document number:DS38882 Rev. 4 - 2

2 of 17

www.diodes.com

March 2017

© Diodes Incorporated

AP3302

Typical Applications Circuit

AC

R 1

R 9

R 7

C 7

C32

C 6

T 1

U5

D 5

R

22

F1

R31

C3

C29

CY1

GND

GATE

FB

SENSE

VCC

AP3302

U1

Q 1

NTC 1

R 2

D7

R 6

R12

DEM

D 4

D 3

Vout

D-

D+

GND

USB Connector

R 24

C2

L1

R

21

C21

6

4

2

1

R 26

R4

R5

3

DRAIN

VCC

GND

CCM

AREF

VDET

6

5&Pad

4

2

3

7,8

R33

R32

R34

C30

R37

R3

D 6

R23

U3

C1

D 1

D 2

C 5

APR34509

R13

C31

U 2

GND

C25

R28

R25

C23

AP433X

C 22

4

5

1

3

6

C 26

D-

D+

2

7

8

C 27

C24

R29

R10

R38

R27

B1

5

R 8

TVS2

TVS3

TVS4

1

DRISR

Pin Descriptions

Pin Number

Pin Name

Function

1

GND

Signal ground. Current return for driver and control circuits

2

FB

Feedback. Directly connected to the opto-coupler

3

DEM

Valley detection for QR control, AC line voltage detection for Brown-in/Brown-out, Sample output

voltage for SOVP and SUVP, Set OCP line compensation current.

4

SENSE

Current Sense

5

VCC

Supply voltage of driver and control circuits

6

GATE

Gate driver output