Datasheet4U Logo Datasheet4U.com

LM3643A - Synchronous Boost Dual LED Flash Driver

Download the LM3643A datasheet PDF. This datasheet also covers the LM3643 variant, as both devices belong to the same synchronous boost dual led flash driver family and are provided as variant models within a single manufacturer datasheet.

Description

The LM3643 is a dual LED flash driver that provides a high level of adjustability within a small solution size.

The LM3643 utilizes a 2-MHz or 4-MHz fixedfrequency synchronous boost converter to provide power to the dual 1.5-A constant current LED sources.

Features

  • 1 1.5 A Total Allowed LED Current During Operation (ILED1 + ILED2 = 1.5 A).
  • Dual Independent LED Current Source Programmability.
  • Accurate and Programmable LED Current Range from 1.4 mA to 1.5 A.
  • Optimized Flash LED Current During Low Battery Conditions (IVFM).
  • > 85% Efficiency in Torch Mode (@ 100 mA) and Flash Mode (@1 A to 1.5 A).
  • Grounded Cathode LED Operation for Improved Thermal Management.
  • Small Solution Size: < 16 mm2.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (LM3643-etcTI.pdf) that lists specifications for multiple related part numbers.

📁 Similar Datasheet

Part Number Description Manufacturer
LM3643-11 THREE DIGIT DISPLAY Ledtech
LM3641 Lithium-Ion Battery Pack Protection Circuit National Semiconductor
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
LM3643 Synchronous Boost Dual LED Flash Driver
LM3642 1.5-A Synchronous Boost 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
LM3646 1.5-A Synchronous Boost Converter

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 LM3643, LM3643A SNVS967A – AUGUST 2014 – REVISED NOVEMBER 2014 LM3643 Synchronous Boost Dual LED Flash Driver with 1.5-A High-Side Current Sources 1 Features •1 1.5 A Total Allowed LED Current During Operation (ILED1 + ILED2 = 1.5 A) • Dual Independent LED Current Source Programmability • Accurate and Programmable LED Current Range from 1.4 mA to 1.5 A • Optimized Flash LED Current During Low Battery Conditions (IVFM) • > 85% Efficiency in Torch Mode (@ 100 mA) and Flash Mode (@1 A to 1.
Published: |