FAN4855 Datasheet (Fairchild Semiconductor) - High Efficiency Boost Regulator

FAN4855, High Efficiency Boost Regulator

The FAN4855 is a low power boost regulator designed for low voltage DC to DC conversion in 2-cell battery powered systems such as digital cameras, cell phones and PDAs.

The converter starts-up at 1.3V and operates after the start at an input voltage as low as 1V.

Output voltage can be adjusted by ex

FAN4855 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 Modulati