AP3171

Document number: DS38006 Rev. 6 - 3

2 of 8

www.diodes.com

July 2020

© Diodes Incorporated

AP3171

Typical Applications Circuit

VIN

VCC

CABLE

PHASE

OUT

D-

D+

VSEN

GND

C1

C3

C5

R4

R5

R7

L1

CMP

C2

(option)

C4

(option)

Pin Descriptions

Pin Number

Pin Name

Function

1

VCC

IC voltage supplier and input voltage for power conversion; Decoupling cap is required to be placed

to this pin and GND pin as close as possible

2

CABLE

Connected to the external resistor to set the cable compensation value

3

D+

Connected to USB D+

4

D-

Connected to USB D-

5

OUT

Sense the output voltage; connected to the input of current sense resistor

6

VSEN

Sense the output current; connected to the output of current sense resistor

7

CMP

The EA output pin to compensate the loop

8

GND

Ground return for the power stage and controller

Exposed PAD

PHASE

Connected to the input of external output inductor