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FAN4855 500mA High Efficiency Boost Regulator with Adjustable Output, Shutdown and Low Battery Detect
December 2005
FAN4855 500mA High Efficiency Boost Regulator with Adjustable Output, Shutdown and Low Battery Detect
Features
■ Low power PFM boost regulator ■ Input
voltage range is from 1.
6V to 4.
5V ■ Output
voltage range is from 3V to 5V ■ 500mA maximum load current capability ■ 95% efficient power conversion ■ 2-3 cell and single cell Li-Ion systems ■ Variable on-time Pulse Frequency Modulation (PFM) ■ Internal synchronous rectifier (no need for external
General Description
The FAN4855 is a low power boost regulator designed for low
voltage DC to DC conversion in 2-cel...