UD05251 - UTC

UD05251 2.5A SYNCHRONOUS STEP-DOWN CONVERTER

The UTC UD05251 is a 1.2MHz constant frequency current mode PWM step-down converter. It is ideal for portable equipment requiring very high current up to 2.5A from single-cell Lithium-ion batteries while still achieving over 90% efficiency during peak load conditions. The UTC UD05251 also can run at 100% duty cycle for low dropout operation, extending batter.

Features

* 2.6V to 5.5V Input Voltage Range
* Adjustable Output Voltages from 0.6V to VIN Fixed output voltage from 0.6V to VIN in increments of 0.05V
* High Efficiency: Up to 94%
* 1.2MHz Constant Frequency Operation
* Output Current: Up to 2.5A Output Current
* No Schottky Diode Required
* Current Mode Operation for Excellent Line and Load Transient Response
* Current limit, Enable function
* Short Circuit Protect (SCP)
* Build-in Soft Start function
* ≤1µA Shutdown Current HSOP-8 1 DFN3030-8 www.unisonic.com.tw Copyright © 2018 Unisonic Technologies Co., Ltd 1 of 8 QW-R115-005.f UD05251 Prelimi.