IS31LT3380 - Lumissil

IS31LT3380 40V/1.2A LED DRIVER

The IS31LT3380 is a continuous mode inductive step-down converter, designed for driving a single LED or multiple series connected LEDs efficiently from a voltage source higher than the LED voltage. The chip operates from an input voltage between 8.5V and 40V and provides an output current up to 1.2A. The IS31LT3380 includes a high-side output current sensing.

Features

 Multi-modes switch dimming
 Up to 1.2A output current
 High efficiency (up to 98%)
 Wide input voltage range: 8.5V to 40V
 Internal 40V power switch
 Simple low parts count
 Typical 5% output current accuracy
 Up to 1MHz switching frequency
 Inherent LED open-circuit/short-circuit protection
 Thermal shutdown protection circuitry
 SOP-8 package APPLICATIONS
 MR16, MR11 LED spotlight
 LED street lighting
 PAR LED bulb
 Other LED lighting Lumissil Microsystems
  – www.lumissil.com 1 Rev. A, 09/01/2011 IS31LT3380 TYPICAL APPLICATION CIRCUIT Figure 1 Typical Application Circuit .