CP2139 Datasheet - CHIP

CP2139 3-Channel Low-Dropout Constant-Current Parallel LED Driver

The CP2139, a 3-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 CP2139, which can guarantee a constant.

CP2139 Features

* y y y y y y y y y y y No External Component Required 20mA Full Scale Current per Channel Only 100mV Dropout Voltage Needed at 20mA per Channel LED Current Matching: ±2% (typical) PWM Dimming Control is Supported (0~100kHz) Over 90% Efficiency can be Reached No EMI and Switch Noise Thermal Shutdown P

CP2139_CHIP.pdf