GENERAL DESCRIPTION
The IS31LT3910 is a peak current mode control LED driver IC. The IS31LT3910 operates in constant off-time 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