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LP5521 - Programmable Three Channel LED Driver

General Description

The LP5521 is a three channel LED driver designed to produce variety of lighting effects for mobile devices.

High efficiency charge pump enables LED driving over full Li-Ion battery voltage range.

The device has a program memory for creating variety of lighting sequences.

Key Features

  • Adaptive charge pump with 1x and 1.5x gain provides up to 95% LED drive efficiency.
  • Charge pump with soft start and overcurrent/short circuit.
  • protection Low input ripple and EMI Very small solution size, no inductor or resistors required 200 nA typical shutdown current Automatic power save mode I2C compatible interface Independently programmable constant current outputs with 8-bit current setting and 8-bit.

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📁 Similar Datasheet

Part Number Description Manufacturer
LP5521 three-channel LED driver Texas Instruments

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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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LP5521 Programmable Three Channel LED Driver June 2007 LP5521 Programmable Three Channel LED Driver General Description The LP5521 is a three channel LED driver designed to produce variety of lighting effects for mobile devices. High efficiency charge pump enables LED driving over full Li-Ion battery voltage range. The device has a program memory for creating variety of lighting sequences. When program memory has been loaded, LP5521 can operate independently without processor control. www.DataSheet4U.com LP5521 maintains excellent efficiency over a wide operating range by automatically selecting proper charge pump gain based on LED forward voltage requirements. LP5521 is able to automatically enter power-save mode, when LED outputs are not active and thus lowering current consumption.