FAN4855

FAN4855 is a low-power step-up regulator designed for low voltage DC to DC conversion in 2-cell battery-powered systems such as digital cameras, cell phnes and PDAs. The converter starts up at 1.3V and operates at an nput voltage as low as 1V. Output voltage can be adjusted from 3.3V to 5V by external resistors with a maximum load current of 0.5A.

Features and Benefits

- 95% efficiency at 200mA load current
- Integrated peak current limit
- Variable output voltage (determined by external resistors)
- Fully internal synchronout rectifier (no external diodes) for high efficiency ad low peak currents
- Variable on-time Pulse Frequency Modulation (PFM)
- Low battery detection
- Package options: MSOP-8L or TSSOP-8L

Applications

- Digital still cameras (DSC)
- PDAs
- Battery-powered applications