Datasheet4U Logo Datasheet4U.com

LM3646 - 1.5-A Synchronous Boost Converter

Description

The LM3646 utilizes a 4-MHz fixed-frequency synchronous boost converter to provide power to dual 1.5-A constant current LED sources.

The high-side current sources allow for grounded cathode LED operation providing flash current up to 1.5 A total.

Features

  • 1 High-Side Current Sources Allowing for Grounded LED Cathode for Improved Thermal Management.
  • > 85% Efficiency in Torch and Flash Modes.
  • Small Solution Size < 20 mm2.
  • Accurate and Programmable Flash LED Current from 24 mA to 1.5 A in 11.7-mA Steps.
  • Accurate and Programmable Torch LED Current from 2.5 mA to 187 mA in 1.5-mA Steps.
  • Dual 1.5-A High-Side Current Sources for Dual LED Drive.
  • Hardware Flash and Torch Enables.
  • Hard.

📥 Download Datasheet

📁 Similar Datasheet

Part Number Description Manufacturer
LM3641 Lithium-Ion Battery Pack Protection Circuit National Semiconductor
LM3643-11 THREE DIGIT DISPLAY Ledtech
LM3647 Universal Battery Charger National Semiconductor
LM360 High Speed Differential Comparator National Semiconductor
LM361 High Speed Differential Comparators National Semiconductor

Other Datasheets by Texas Instruments

Part Number Description
LM3642 1.5-A Synchronous Boost LED Flash Driver
LM3643 Synchronous Boost Dual LED Flash Driver
LM3643A Synchronous Boost Dual LED Flash Driver
LM3644 Dual 1.5-A Current Source Camera Flash LED Driver
LM3644TT Dual 1.5-A Current Source Camera Flash 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
Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LM3646 SNVS962A – DECEMBER 2013 – REVISED NOVEMBER 2014 LM3646 1.5-A Synchronous Boost Converter With Dual High-Side Current Sources and I2C-Compatible Interface 1 Features •1 High-Side Current Sources Allowing for Grounded LED Cathode for Improved Thermal Management • > 85% Efficiency in Torch and Flash Modes • Small Solution Size < 20 mm2 • Accurate and Programmable Flash LED Current from 24 mA to 1.5 A in 11.7-mA Steps • Accurate and Programmable Torch LED Current from 2.5 mA to 187 mA in 1.5-mA Steps • Dual 1.
Published: |