UD05123 Datasheet - UTC

UD05123 - SYNCHRONOUS STEP-DOWN CONVERTER

UTC UD05123 is a 2.25MHz constant frequency current mode PWM step-down converter. It is ideal for portable equipment requiring very high current up to 1.8A from single-cell Lithium-ion batteries while still achieving over 90% efficiency during peak load conditions. The 2.5V to 5.5V input voltage ran.

UD05123 Features

* Input Voltage Range :2.5V~5.5V

* Output Voltage: from 0.6V to VIN

* High Efficiency: Up to 92%

* Constant Frequency Operation: 2.25MHz

* Output Current:1.2A

* Quiescent Current: 50uA (input < 4.2V)

* No Schottky Diode Required

* 100% Duty Cycle in Dropout

* 0.6

UD05123-UTC.pdf