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CAT3644 - 4-Channel Ultra High Efficiency Quad-Mode TM LED Driver

Description

The CAT3644 is a high efficiency quad-mode fractional charge pump that can drive up to four LEDs programmable by a one wire digital interface.

tional 1.5x charge pumps with no added exte

Features

  • High efficiency 1.33x charge pump.
  • Quad-mode charge pump: 1x, 1.33x, 1.5x, 2x.
  • Drives up to 4 LEDs at 25mA each.
  • 1-wire EZDim™ LED current programming.
  • Power efficiency up to 92%.
  • Low noise input ripple in all modes.
  • “Zero” current shutdown mode.
  • Soft start and current limiting.
  • Short circuit protection.
  • Thermal shutdown protection.
  • 3mm x 3mm, 16-lead TQFN package.

📥 Download Datasheet

Datasheet Details

Part number CAT3644
Manufacturer Catalyst Semiconductor
File Size 318.87 KB
Description 4-Channel Ultra High Efficiency Quad-Mode TM LED Driver
Datasheet download datasheet CAT3644 Datasheet

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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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CAT3644 4-Channel Ultra High Efficiency Quad-Mode™ LED Driver FEATURES „ High efficiency 1.33x charge pump „ Quad-mode charge pump: 1x, 1.33x, 1.5x, 2x „ Drives up to 4 LEDs at 25mA each „ 1-wire EZDim™ LED current programming „ Power efficiency up to 92% „ Low noise input ripple in all modes „ “Zero” current shutdown mode „ Soft start and current limiting „ Short circuit protection „ Thermal shutdown protection „ 3mm x 3mm, 16-lead TQFN package DESCRIPTION The CAT3644 is a high efficiency quad-mode fractional charge pump that can drive up to four LEDs programmable by a one wire digital interface. The inclusion of a 1.33x fractional charge pump mode increases device efficiency by up to 10% over tradi– tional 1.5x charge pumps with no added external capacitors.
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