UNISONIC TECHNOLOGIES CO., LTD

US204

Preliminary

CMOS IC

www.unisonic.com.tw

1 of 6

Copyright © 2011 Unisonic Technologies Co., Ltd

QW-R502-601.a

100mΩ, 1/1.5A HIGH-SIDE

POWER SWITCHES WITH FLAG

DESCRIPTION

The UTC US204 series are 100mΩ high-side power switches.

There are internal duel low voltage N-Channel MOSFETS which

whish is ideal all USB applications. These MOSFETS is driven by a

charge pump circuitry inside, these switches on resistance are as

low as 100mΩ which and meet the drop voltage for USB

applications.

The flag pins output an open-drain fault flag to next controller.

There’re lots internal special ways for protecting the chip’s

operation. There are also built-in protection circnits to ensure the

chips function normally.

When in hot-plug events, there’s large current which can create

the upstream voltage droop to match the USB’s voltage droop

requirements and soft-start for isolating the power source.

As soon as the die temperature is higher than 130℃, the internal

shutdown circuit will work.

(under-voltage lockout, 2.1V typ.) can make sure the chip is in the

off state.

Because of the requirement of USB power, the fault current

should be ensured to be less than 1.5A for UTC US204AH/AL and

1.0A for UTC US204CH/CL.

FEATURES

* 100mΩ(Typ) N-Channel MOSFET

* Supply Current:

–

Switch On : 60μA (Typ)

–

Switch Off : 1μA (Typ)

* Load Current 1.5A for US204AH/AL and 1.0A for US204CH/CL

* Input Voltage from 2V ~ 5.5V

* In Off-State: Output Voltage can be Higher than Input

SOP-8

RDERING INFORMATION

Ordering Number

Lead Free

Halogen Free

Package

Packing

US204XXL-S08-R

US204XXG-S08-R

SOP-8

Tape Reel