CP2122 Datasheet - CHIP

CP2122 Step-Up White-LED Driver

The CP2122 is a step-up DC/DC converter specifically designed for driving white LEDs with a constant current. Operation at a fixed switching frequency of 1.4MHz allows the device to be used with small value external ceramic capacitors and inductors. Series connection of LEDs provides equal LED curr.

CP2122 Features

* an internal soft start to eliminate inrush current during startup. Equipped with built-in over-voltage protection function, the device enters a very low power operating mode during the “OPEN LED” fault conditions. The CP2122 is available in SOT23-5L package. SOT23-5L -40℃~85℃ Features y y y y y y

CP2122_CHIP.pdf