3

PI3USB4002AQ

A Product Line of

Diodes Incorporated

www.diodes.com

January 2021

Diodes Incorporated

PI3USB4002AQ

Document Number DS41995 Rev 1-2

C0+

C0-

EN

L0+

L0-

Control Logic

Charge

Vbus

D+

D-

Processor

USB2

GPIO

Vbus

1μF

REF

VDD

GND

PI3USB4002AQ provide overvoltage protection for D+/- when high voltage charging

Note:

The capacitor connected to REF pin should have rated voltage higher than maximum voltage applied to C0+/- pins; the max rating of device on C0+/- is 24V, cus-

tomer can select lower voltage capacitor if system required lower voltage tolerance on C0+/-; capacitance of 1uF.

1.

The 1uF capacitor recommend to be placed to the REF and GND pin of the device as close as possible

2.

The decoupling capacitor at the VDD recommend to be placed to the device as close as possible.

3.

Keep the trace between connector and device as long as possible; if needs inductor between device and connector, it recommend to be placed to the USB con-

nector as close as possible and leaving some trace line between the device and the inductor would help some for the ESD performance.