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CP2142 - 4-Channel Low-Dropout Constant-Current Parallel LED Driver

Datasheet Summary

Description

The CP2142, a 4-channel low-dropout constant-current parallel LED driver, can be used to drive white LED, red 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 y No external component required Only 100mV dropout voltage needed at 20mA per channel 1-wire pulse counting dimming: 16 steps logarithmic scale LED current matching: ±2% (typical) Over 90% efficiency can be reached No EMI and switch noise Thermal shutdown protection Supply voltage range: 2.7~5.5V Shutdown current less than 0.1µA RoHS compliant and 100% lead(Pb)-free.

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Datasheet preview – CP2142

Datasheet Details

Part number CP2142
Manufacturer CHIP
File Size 104.91 KB
Description 4-Channel Low-Dropout Constant-Current Parallel LED Driver
Datasheet download datasheet CP2142 Datasheet
Additional preview pages of the CP2142 datasheet.

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Full PDF Text Transcription

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Product Brief CP2142 V1.0 LED Driver Series 4-Channel Low-Dropout Constant-Current Parallel LED Driver with 1-Wire Pulse Counting Dimming Control www.datasheet4u.com General Description The CP2142, a 4-channel low-dropout constant-current parallel LED driver, can be used to drive white LED, red LED, blue LED or any color LED whose forward operating voltage is lower than the battery voltage. The unique Auto-MirrorTM technology is introduced in CP2142, which can guarantee a constant LED current in various operating conditions. The CP2142 uses the 1-wire pulse counting technique to adjust the brightness of LEDs, with the pulse signal on the EN pin, the LED current varies according to 16 steps logarithmic scale.
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