Unisonic Technologies UD05123
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.| Part No. | UD05123 |
|---|---|
| Datasheet | UD05123 Download |
| Manufacturer |  Unisonic Technologies |
| Description | SYNCHRONOUS STEP-DOWN CONVERTER |
| Buy | Stock & Price |
DESCRIPTION
UTC 100% duty cycle provides low dropout operation, extending battery life in portable systems. Pulse skipping mode operation provides very low output ripple voltage for noise sensitive applications. Switching frequency is internally set at 2.25MHz, allowing the use of small surface mount inductors and capacitors. The internal synchronous switch increases efficiency and decreases need of an external Schottky diode. Low output voltages are easily supported with the 0.6V feedback reference voltage.●
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 * Current limit, Enable function * Short Circuit Protect (SCP) * ≤1µA Shutdown Current● ORDERING INF...
