0.9 V boost LED driver, 500 kHz, 20 mA, SOT-23-3

0.9 V boost driver for white LEDs
Requires only one external component

Description:

The PR4401 and PR4402* are single-cell boost converters for white LEDs operating at supply voltages less than 0.9 V. Only one external inductor is required to operate a white LED. PR4401 is recommended for medium LED currents up to 20 mA, PR4402 for up to 40 mA. This makes PR4401 and PR4402 ideal for use in low cost or small applications such as LED flashlights or LCD backlights for portable devices.

Features:
- minimum starting voltage 0.9 V
- 200 / 250 mA peak output current
- only one external component required
- protection against deep discharge of the battery

Applications:
- Small LED flashlights
- LCD backlights
- LED indicator lights