HXH1X2122727
2.5A Synchronous Buck DC/DC Converter
Features
Up to 95% Efficiency
Low Quiescent Current: 360µA
Up to 2.5...
HXH1X2122727
2.5A Synchronous Buck DC/DC Converter
Features
Up to 95% Efficiency
Low Quiescent Current: 360µA
Up to 2.5A Load Current Soft-start
： ～Output
Voltage 5.5V 0.6V
No Schottky Diode Required 1MHz Fixed Frequency Switching Short-Circuit Protection
Shutdown Quiescent Current: < 1µA
DFN3*3-10L Package (lead-free package)
Application
Digital cameras and MP3 Palmtop computers / PDAs Cellular phones Wireless handsets and DSL modems PC cards Portable media players
Description
The HX1227 is high efficiency synchronous, step-down DC/DC converters working under an input
voltage range of 2.5V to 5.5V. This feature makes the HX1227 suitable for single Li-lon battery-powered applications. 100% duty cycle capability extends battery life in portable devices,
while the quiescent current is 360µA with no load, and drops to < 1µA in shutdown.
The internal synchronous switch is desired to increase efficiency without an external Schottky diode. The 1MHz fixed switching frequency allows ...
