LM3646 Datasheet (Texas Instruments) - 1.5-A Synchronous Boost Converter

LM3646, 1.5-A Synchronous Boost Converter

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.

An adaptive headroom regulation scheme ensures the LE

LM3646 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

* Accur