LM3508 Datasheet (Texas Instruments) - Synchronous Magnetic Constant Current White LED Driver

LM3508, Synchronous Magnetic Constant Current White LED Driver

The LM3508 is a synchronous boost converter (no external Schottky diode required) that provides a constant current output.

It is designed to drive up to 4 series white LEDs at 30mA from a single-cell Li-Ion battery.

A single low power external resistor is used to set the maximum LED current.

The LED

LM3508 Features

* 1

* 2 Drives 4 Series White LEDs with up to 30mA

* >80% Peak Efficiency

* Up to 100kHz PWM Brightness Control

* Accurate ±5% LED Current Regulation across VIN range

* Internal Synchronous PFET (No Schottky Diode Required)

* True Shutdown Isolation