UD05103中文资料1A, HIGH-EFFICIENCY 1.5MHz/1MHz SYNCHRONOUS STEP-DOWN CONVERTER数据手册UTC规格书

描述 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 continuousoutput current over from 2.5V to 5.5V input supply range, withexcellent load and line regulation.The UTC UD05103 is ideally suited for portable electronicdevices that are powered from 1-cell Li-ion battery or from otherpower 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 theshutdown current is less than 1μA. Other key

特性 Features

includeover-temperature and short circuit protection, and under-voltagelockout to prevent deep battery discharge.The UTC UD05103 at 1A maximum output current whileconsuming only 40μA of no-load quiescent current. Ultra-lowRDS(ON) integrated MOSFETs and 100% duty cycle operation makethe 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 VIN Input Voltage : 2.5V to 5.5V Low-RDS(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)