CP2143 - 3-Channel Low-Dropout Constant-Current Parallel LED Driver

CHIP

CP2143 Datasheet Preview — Preview of CP2143 PDF

Datasheet Details

Part number	CP2143
Manufacturer	CHIP
File Size	212.94 KB
Description	3-Channel Low-Dropout Constant-Current Parallel LED Driver
Datasheet	CP2143_CHIP.pdf

CP2143 Product details

Description

The CP2143, a 3-channel low-dropout constant-current parallel LED driver, can be used to drive white LED, blue LED or any color LED whose forward operating voltage is lower than the battery voltage.

Features

y y y y y y y y y 38μA supply current, can be powered by a GPIO port low as 2.5V LED’s current set by external resistor, up to 40mA per channel supported Only 150mV dropout voltage needed at 20mA per channel LED current matching: ±0.3% (typical) PWM dimming control or DC voltage control supported Over 90％ efficiency can be reached No EMI and switch noise Thermal shutdown protection Shutdown current less than 0.1μA.

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Published: May 22, 2009 |