FAN4855 Description
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 external resistors from 3.3V to 5V with a maximum load current of 0.5A.
FAN4855 Key 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