LM3644 Datasheet (Texas Instruments) - Dual 1.5-A Current Source Camera Flash LED Driver

LM3644, Dual 1.5-A Current Source Camera Flash LED Driver

The LM3644 is a dual LED flash driver that provides a high level of adjustability within a small solution size.

The LM3644 utilizes a 2-MHz or 4-MHz fixedfrequency synchronous boost converter to provide power to the dual 1.5-A constant current LED sources.

The dual 128 level current sources provide

LM3644 Features

* 1 Dual Independent 1.5-A LED Current Source Programmability

* Accurate and Programmable LED Current Range from 1.4 mA to 1.5 A

* Torch Currents up to 360 mA (LM3644TT)

* Flash Timeout Values up to 1.6 seconds (LM3644TT)

* Optimized Flash LED Current During Lo