The current-based operating mode provides a fast transient response and facilitates loop stabilization. Fault condition protection includes cycle-by-cycle current limiting and thermal shutdown. The UTC UD32121 requires a minimal number of readily available standard external components.
Characteristics
* Maximum output current of 1.2A
* Internal 0.35Ω power MOSFET switch
* Stable with low ESR output ceramic capacitors
* Up to 92% efficiency
* 0.1μA in shutdown mode
* Fixed frequency of 1.4MHz
* Thermal shutdown
* Cycle-to-cycle overcurrent protection
* Wide input range of 4.5V to 32V
* Adjustable output of 0.81V to 15V
Applications
* Distributed Power Systems
* Battery Charger
* Pre-regulator for Linear Regulators
* WLED Drivers
