Datasheet4U Logo Datasheet4U.com

CAT3643 - 3-Channel Ultra High Efficiency Quad-Mode TM LED Driver

General Description

The CAT3643 is a high efficiency quad-mode fractional charge pump that can drive up to three LEDs programmable by a one wire digital interface.

Key Features

  • High efficiency 1.33x charge pump.
  • Quad-mode charge pump: 1x, 1.33x, 1.5x, 2x.
  • Drives up to 3 LEDs at 32mA 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.
  • Tiny 12-lead XQFN, 12-lead TDFN and 16-lead TQFN packages DESCRI.

📥 Download Datasheet

Datasheet Details

Part number CAT3643
Manufacturer Catalyst Semiconductor
File Size 342.86 KB
Description 3-Channel Ultra High Efficiency Quad-Mode TM LED Driver
Datasheet download datasheet CAT3643 Datasheet

📁 Similar Datasheet

Part Number Description Manufacturer
CAT3643 3-Channel Ultra High Efficiency LED Driver ON Semiconductor

Other Datasheets by Catalyst Semiconductor

Part Number Description
CAT3644 4-Channel Ultra High Efficiency Quad-Mode TM LED Driver
CAT3647 3-Channel Ultra High Efficiency Quad-Mode LED Driver
CAT3648 4-Channel Ultra High Efficiency Quad-Mode LED Driver
CAT3603 3-Channel LED Driver
CAT3604 4-Channel Regulated Charge Pump White LED Driver
CAT3604V 4-Channel Quad-Mode LED Driver
CAT3606 6-Channel Low Noise Charge Pump White LED Driver
CAT3612 Programmable 300mA Camera Flash LED Driver
CAT3614 4-Channel 1-Wire LED
CAT3616 6-Channel Charge Pump LED Driver

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.

View original datasheet text
CAT3643 3-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 3 LEDs at 32mA 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 „ Tiny 12-lead XQFN, 12-lead TDFN and 16-lead TQFN packages DESCRIPTION The CAT3643 is a high efficiency quad-mode fractional charge pump that can drive up to three 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 traditional 1.5x charge pumps with no added external capacitors.