Drives LEDs with a regulated output voltage or current (up to 120mA) from an unregulated input supply (2.7V to 5.3V). These are complete DC-DC converters requiring only four small ceramic capacitors and no inductors. 200mV Current-Sense Threshold Reduces Power Loss.
1.5x/2x High-Efficiency White LED Charge Pumps
- High-Efficiency 1.5x/2x Charge Pumps
- Low Input Ripple with 750kHz Operation
- Up to 120mA Output Current
- 1µA Shutdown Current
Read More Here – White LED Drive Maxim at EEM