Datasheet > UD05103

UD05103

更新时间： 2024-11-05 14:54:23

品牌	Logo	应用领域
友顺 - UTC		/
页数	文件大小	规格书
5页	143K
描述
1A, high-efficiency 1.5Mhz/1mhz synchronous step-d...

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UD05103 数据手册

UNISONIC TECHNOLOGIES CO., LTD

UD05103

Preliminary

LINEAR INTEGRATED CIRCUIT

1A, HIGH-EFFICIENCY

1.5MHz/1MHz SYNCHRONOUS

STEP-DOWN CONVERTER



DESCRIPTION

The UTC UD05103 is a high-frequency, synchronous, rectified,

step-down, switch-mode converter with internal power MOSFETs.

It offers a very compact solution to achieve a 1A continuous

output current over from 2.5V to 5.5V input supply range, with

excellent load and line regulation.

The UTC UD05103 is ideally suited for portable electronic

devices that are powered from 1-cell Li-ion battery or from other

power sources such as cellular phones, PDAs, handheld devices,

game console and related accessories.

The output voltage is adjustable from 0.6V to the input voltage.

During shutdown, the input is disconnected from the output and the

shutdown current is less than 1μA. Other key features include

over-temperature and short circuit protection, and under-voltage

lockout to prevent deep battery discharge.

The UTC UD05103 at 1A maximum output current while

consuming only 40μA of no-load quiescent current. Ultra-low

R_DS(ON)integrated MOSFETs and 100% duty cycle operation make

the UTC UD05103 an ideal choice for high-output voltage,

high-current applications which require a low dropout threshold.



FEATURES

* Output Current : Up to 1 A

* Output Voltage : 0.6V to V_IN

* Input Voltage : 2.5V to 5.5V

* Low-R_DS(ON)Internal Power MOSFETs.

* High-Efficiency Synchronous-Mode Operation, up to 95%

* 40μA (typ.) No Load Quiescent Current

* Shutdown Current < 1μA

* 100% Duty Cycle Operation

* Fixed 1.0MHz Switching Frequency.

* Current Mode Operation

* Internal Soft-Start.

* Current Limit Protection

* Over-temperature Protection.

* Input Under Voltage Lockout (UVLO)

www.unisonic.com.tw

1 of 5

QW-R115-015.b

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