GENERAL DESCRIPTION
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 circuit, which uses an external resistor to set the nominal average output current. The IS31LT3380 includes an integrated output switch which has a very low conducting impedance to ensure high system efficiency.

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
● SOP8 package

APPLICATIONS
● MR16, MR11 LED spotlight
● LED street lighting
● PAR LED bulb
● Other LED lighting