Overview: Product Brief CP2167 V1.0
LED Driver Series High Efficiency 1X/1.5X Fractional Charge Pump for White LED (1-Wire Pulse Counting Dimming Control) With Dual Channel 200mA LDO
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The CP2167 is an integrated solution for 4 white LED supplies in backlighting color display applications and phone camera input supply. The device contains a self adapted charge pump white LED driver and dual channel low dropout linear regulators. The CP2167 is available in a small 20-pin 3mm*3mm QFN package. 3mm*3mm QFN 20L -40℃～85℃ 0 In the section of charge pump, high efficiency is achieved by utilizing a 1x/1.5x adaptive fractional conversion technique in combination with low dropout current regulator. The CP2167 provides up to 4 LED at 30mA each and uses 1-wire pulse counting technique to adjust the brightness of LEDs, with the pulse signal on the EN1 pin, and the LED current varies according to 16 steps logarithm scale. In the section of LDO, The CP2167 contains a dual channel, low noise, and low dropout regulator sourcing up to 200mA at each channel, and while the typical dropout-voltage is 200mV. The excellent transient response performance, high PSRR and no bypass capacitor makes the LDOs suitable for digital applications. The output voltage ranges from 1.0V ~3.3V. Anti reverse current function can prevent reverse current in the situation that the output voltage is above the input voltage. The LDO also provides current limiting and short-protection.
