UNISONIC TECHNOLOGIES CO., LTD

US16855

Preliminary

CMOS IC

www.unisonic.com.tw

1 of 8

Copyright © 2011 Unisonic Technologies Co., Ltd

QW-R502-558.a

DUAL HIGH-SIDE SWITCH FOR

USB APPLICATION

DESCRIPTION

The UTC US16855 is a dual channel power switch with

independent enable and flag functions optimized for bus-powered

Universal Serial Bus (USB) and self-powered applications.

This product satisfies USB voltage drop requirement with soft

start which eliminates the momentary voltage drop on the upstream

port that may occur.

In addition, the UTC US16855 is equipped with over-temperature

and over-current detectors and each flag output is available to

indicate fault conditions independently to the USB controller. The

UTC US16855 is available in active-high versions in 8-pin SOP

package.

FEATURES

* 4V ~ 5.5V operating range

* Two P-channel power MOSFET control switch

* Over-current protection

* Under-voltage lockout circuit

* Thermal shutdown circuit

* Soft-start circuit

* Flag indicates fault conditions

SOP-8

ORDERING INFORMATION

Ordering Number

Lead Free

Halogen Free

Package

Packing

US16855L-S08-R

US16855G-S08-R

SOP-8

Tape Reel

US16855L-S08-T

US16855G-S08-T

SOP-8

Tube

Note: xx: Output Voltage, refer to Marking Information.

US16855G-xx-S08-R

(1)Packing Type

(2)Package Type

(3)Output Voltage Code

(1) R: Tape Reel, T: Tube

(2) S08: SOP-8

(3) xx: Refer to Marking Information

(4) Halogen Free, L: Lead Free

(4)Halogen Free