GENERAL DESCRIPTION
The IS31LT3910 is a peak current mode control LED driver IC. The IS31LT3910 operates in constant offtime mode. It allows efficient operation of High Brightness (HB) LEDs with voltage sources ranging from 8VDC to 450DC or 110VAC/220VAC. The IS31LT3910 includes a PWM dimming input that can accept an external control signal with a duty ratio of 0 - 100% and a frequency of up to a few kilohertz. It also includes a 0 - 240mV linear dimming input which can be used both for linear dimming and temperature compensation of the LED current.

FEATURES
● Wide input range from 8VDC to 450DC or
   110VAC/220 VAC
● Temperature compensation to regulate LED
   current
● Application from a few mA to more than 1A
   output
● Constant off-time operation
● Linear and PWM dimming capability
● Switch mode controller for single switch LED
   drivers
● Requires few external components for operation

APPLICATIONS
● DC/DC or AC/DC LED driver applications
● General purpose constant current source
● Signal and decorative LED lighting
● backlighting LED driver