Datasheet > UD05151

UD05151

更新时间： 2024-11-05 14:53:23

品牌	Logo	应用领域
友顺 - UTC		/
页数	文件大小	规格书
5页	147K
描述
1.5A, high-efficiency 1.5Mhz synchronous step-down...

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UD05151 数据手册

UNISONIC TECHNOLOGIES CO., LTD

UD05151

Preliminary

LINEAR INTEGRATED CIRCUIT

1.5A, HIGH-EFFICIENCY

1.5MHz SYNCHRONOUS

STEP-DOWN CONVERTER



DESCRIPTION

The UTC UD05151 is a high-frequency, synchronous, rectified,

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

It offers a very compact solution to achieve a 1.5A continuous

output current over from 3.0V to 5.5V input supply range, with

excellent load and line regulation.

The UTC UD05151 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 UD05151 at 1.5A maximum output current while

consuming only 80µA of no-load quiescent current. Ultra-low

R_DS(ON)integrated MOSFET_sand 100% duty cycle operation make

the UTC UD05151 an ideal choice for high-output voltage,

high-current applications which require a low dropout threshold.



FEATURES

* Output Current : Up to 1.5A

* Output Voltage : 0.6V to V_IN

* Input Voltage : 3.0V to 5.5V

* Low-R_DS(ON)Internal Power MOSFETs

* High-Efficiency Synchronous-Mode Operation, up to 90%

* 80uA (typ) No Load Quiescent Current

* Shutdown Current < 1µA

* 100% Duty Cycle Operation

* Fixed 1.5MHz Switching Frequency

* Internal Power-Save Mode for High Efficiency at Light Load

* Current Mode Operation

* Internal Soft-Start

* Current Limit Protection

* Over-temperature Protection

* Input Under Voltage Lockout (UVLO)

www.unisonic.com.tw

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