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

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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Datasheet Details

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

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Full PDF Text Transcription

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Product Brief CP2143 V1.1 LED Driver Series 3-Channel Low-Dropout Constant-Current Parallel LED Driver with Current Setting Resistor www.datasheet4u.com General 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. The unique Smart-MirrorTM technology is introduced in CP2143, which can guarantee a constant LED current in various operating conditions. Without capacitor or inductor, only one resistor is needed for setting the current of the LEDs. The CP2143 is available in a space-saving Pb-free SOT23-6L package. SOT23-6L -40℃~85℃ Features y y y y y y y y y 38μA supply current, can be powered by a GPIO port low as 2.
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