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LM2755 - Charge Pump LED Controller

General Description

The LM2755 is a charge-pump-based, constant current LED driver capable of driving 3 LEDs with a total output current up to 90mA.

Key Features

  • 1.
  • 2 90% Peak Efficiency.
  • Total solution size < 13mm2.
  • No Inductor Required: Only 4 Inexpensive Ceramic Caps.
  • 3 Independently Controlled Constant Current Outputs.
  • Programmable Trapezoidal Dimming Waveform on Each Output.
  • Programmable Timing Control Via Internal Registers and External Clock Synchronization Input.
  • 32 Exponential Dimming Steps with 800:1 Dimming Ratio.
  • Programmable Brightness Control via I2CCompatible Interface.

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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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LM2755 www.ti.com SNVS433D – OCTOBER 2007 – REVISED APRIL 2013 LM2755 Charge Pump LED Controller with I2C-Compatible Interface in DSBGA Package Check for Samples: LM2755 FEATURES 1 •2 90% Peak Efficiency • Total solution size < 13mm2 • No Inductor Required: Only 4 Inexpensive Ceramic Caps • 3 Independently Controlled Constant Current Outputs • Programmable Trapezoidal Dimming Waveform on Each Output • Programmable Timing Control Via Internal Registers and External Clock Synchronization Input • 32 Exponential Dimming Steps with 800:1 Dimming Ratio • Programmable Brightness Control via I2CCompatible Interface • Hardware Enable Pin • Wide Input Voltage Range: 2.7V to 5.5V • Tiny 18-bump Thin DSBGA : 1.8mm x 1.6mm x 0.