CP2129 Datasheet - CHIP

CP2129 White LED Step-up Converter

CP2129 V1.1 DC/DC Series The CP2129 is a step-up DC/DC converter specifically designed for driving white LEDs with a constant current. The device can drive up to 4 white LEDs from a 3V power supply. PWM dimming control is supported to adjust the brightness of the white LEDs. The CP2129 switches a.

CP2129 Features

* y y y y y y y y Inherently matched LED current High efficiency: 84% (typical) Stable 20V bipolar switches Internal output over-voltage protection (17V typical) Fast 1.1MHz switching frequency Uses tiny 1mm height inductors Shutdown current:

CP2129_CHIP.pdf