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LM3648 - Synchronous Boost LED Flash Driver

Description

The LM3648 is an LED flash driver that provides a high level of adjustability within a small solution size.

The LM3648 utilizes a 2-MHz or 4-MHz fixedfrequency synchronous boost converter to provide power to the 1.5-A constant current LED source.

Features

  • 1 1.5-A LED Current Source Programmability.
  • Accurate and Programmable LED Current Range from 1.954 mA to 1.5 A.
  • Torch Currents up to 500 mA (LM3648TT).
  • Flash Timeout Values up to 1.6 Seconds (LM3648TT).
  • Optimized Flash LED Current During Low Battery Conditions (IVFM).
  • > 85% Efficiency in Torch Mode (at 100 mA) and Flash Mode (at 1 A to 1.5 A).
  • Grounded Cathode LED Operation for Improved Thermal Management.
  • Small Solution Siz.

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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

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Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LM3648, LM3648TT SNVSA68D – OCTOBER 2014 – REVISED NOVEMBER 2016 LM3648 Synchronous Boost LED Flash Driver with 1.5-A High-Side Current Source 1 Features •1 1.5-A LED Current Source Programmability • Accurate and Programmable LED Current Range from 1.954 mA to 1.5 A • Torch Currents up to 500 mA (LM3648TT) • Flash Timeout Values up to 1.6 Seconds (LM3648TT) • Optimized Flash LED Current During Low Battery Conditions (IVFM) • > 85% Efficiency in Torch Mode (at 100 mA) and Flash Mode (at 1 A to 1.
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