LM3559 Datasheet (Texas Instruments) - Synchronous Boost Flash Driver

LM3559, Synchronous Boost Flash Driver

The LM3559 is a 2-MHz fixed-frequency synchronous boost converter with two 900-mA constant current drivers for high-current white LEDs.

The dual highside current sources allow for grounded cathode LED operation and can be tied together for providing flash currents of up to 1.8 A.

An adaptive regulat

LM3559 Features

* 1 Dual High-Side Current Sources Allow for Grounded Cathode LED Operation

* Accurate and Programmable LED Current from 28.125 mA to 1.8 A

* Optimized Flash Current During Low Battery Conditions

* Independent LED Current Source Programmability

* Four Operating