UD05151中文资料降压切换稳压电路数据手册UTC规格书

描述 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 continuousoutput current over from 3.0V to 5.5V input supply range, withexcellent load and line regulation.The UTC UD05151 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 UD05151 at 1.5A maximum output current whileconsuming only 80µA of no-load quiescent current. Ultra-lowRDS(ON) integrated MOSFETs and 100% duty cycle operation makethe 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 VIN Input Voltage : 3.0V to 5.5V Low-RDS(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)