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.
Key Features
z z z z z z z z z z z 1X/1.5X Mode for Ultra-High Efficiency Up to 25mA Output Current for Each Channel 2.7V to 5.5V Input Voltage 1MHz Fixed Switching Frequency Single-Wire Serial Pulse Interface to Set LED Current with 16-step Linear scale Soft Start Function Built-In Short-Circuit Protection Built-in Thermal Protection IQ.
Full PDF Text Transcription for EUP3651 (Reference)
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EUP3651 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...
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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 EUP3651 enters shutdown mode. Th
EUP3651 Datasheet
