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CP2122 - Step-Up White-LED Driver

General Description

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.

Key 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 y y Switch current limit 700mA Drives LED strings up to 34V Up to 84% efficiency Soft start “in-rush” current limiting Fast 1.4 MHz switching frequency Built-in over-voltage protection Shutdown curren.

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Datasheet Details

Part number CP2122
Manufacturer CHIP
File Size 146.52 KB
Description Step-Up White-LED Driver
Datasheet download datasheet CP2122 Datasheet

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Other Datasheets by CHIP

Part Number Description
CP2123 Step-Up White-LED Driver Brief
CP2123 Step-Up White-LED Driver
CP2124 Step-Up White-LED Driver Brief
CP2124 Step-Up White-LED Driver
CP2125 White LED Step-up Converter

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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Product Brief CP2122 V1.0 LED Driver Series Step-Up White-LED Driver for Mid-size or Large Panel General www.datasheet4u.com Description 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 current which results in uniform brightness. 300mV feedback voltage minimizes the power loss in the current setting resistor for better efficiency. The CP2122 high-voltage output stage is ideal for driving parallel strings of up to seven white LEDs in series or up to 34V. The CP2122 features an internal soft start to eliminate inrush current during startup.