3-Channel Low-Dropout Constant-Current Parallel LED Driver
Product Brief
CP2143 V1.1
LED Driver Series
3-Channel Low-Dropout Constant-Current Parallel LED Driver with Current Se...
Description
Product Brief
CP2143 V1.1
LED Driver Series
3-Channel Low-Dropout Constant-Current Parallel LED Driver with Current Setting Resistor
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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 2.5V 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
Applications
y y y y y y Mobile phones Digital still camera MP3 players PDAs GPS receivers Torches
Pin Configurations
SOT23-6L Package (Top View)
EN GND SET
1
6
SOT23-6L Marking
LED1 LED2 LED3
2
5
4
CPLSG
CPLSG-CP2143ST
3
Copyright ©2006 Chiphomer Technology Limited 1
Product Brief
CP2143 V1.1
LED Driver Series
3-Channel Low-Dropout Constant-Current Parallel LED...
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