Datasheet Summary
4-Channel, 1X/1.5X Charge Pump White LED Driver
DESCRIPTION
The EUP3651 is a high efficiency charge pump white LED driver. It supports 4 white LEDs with regulated constant current for uniform intensity. The EUP3651 maintains the highest efficiency by utilizing a 1.5X fractional charge pump and low dropout current regulators. A low external parts count (two 1uF flying capacitors and two small 1uF capacitors at VIN and VOUT) makes the EUP3651 ideally suited for small battery-powered applications. The EN logic input is used to enable, disable, and set current with a 16-step linear scale.The LED current can be configured between 5mA and 25mA. If EN is kept low for more than 1.5ms, the...