UD05123 Description
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 range makes UTC UD05123 ideally suited for single Li-Ion, two to four AA battery-powered applications.
UD05123 Key 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
- 0.6V Reference Allows Low Output Voltages
- Current Mode Operation for Excellent Line and Load Transient Response