UD05104中文资料5V 1A 2.25MHz SYNCHRONOUS STEP-DOWN DC/DC CONVERTER数据手册UTC规格书

描述 Description

The UTC UD05104 is a 1A high frequency synchronous Step Down DC/DC converter using constant frequency, current mode architecture. The device integrates main switch and synchronous rectifier switch for high efficiency without an external schottkydiode. To maximize light load efficiency, The UTC  UD05104draws only 30μA quiescent current to improve light load efficiency. In shutdown, The UTC  UD05104 reduces supply current less than 1μA. The UTC UD05104 can supply 1A of load current from 2.5V to 6.0V input voltage. The output voltage can be regulated as low as 0.6V. The switching frequency is internally set at 2.25MHz, as for operation mode: UTC  UD05104 is automatic PSM/PWM mode.   The UTC  UD05104  has built-in internal Soft Start, ShortCircuit Protection and OTP functions, allowing the use of small surface mount inductors and capacitor.

特性 Features

Input Voltage Range from 2.5V to 6.0V+/-2% 0.6V Feedback Voltage Accuracy2.25MHz Switching Frequency      Continuous Output Current up to 1ALow Quiescent Current of 30µA0.1μA Shutdown Current100% Duty Cycle OperationBuilt-in 170mΩ/150mΩ Power SwitchInternal Soft-StartCycle-by-Cycle Current Limit ProtectionOver-Load and Hiccup Mode Short CircuitThermal Shutdown Protection