natlinear LN2544
LN2544 is an open loop, current mode , built-in NMOSFET, control LED driver IC. The LN2544 operates constant off-time mode. It allows efficient operation of High Brightness (HB) LEDs from voltage sources ranging from 8VDC up to 100VDC.GENERAL DESCRIPTION
The LN2544 operates constant off-time mode. The LN2544 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, and the dimming also accept a 0-1.2V linear input signal. The RNTC pin can accept a 0-250mV Line Dimming input witch be used for temperature compensation of the LED current. LN2544 is available by SOP-8 packages.● General purpose constant current source
● Signal and decorative LED lighting
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FEATURES
● Switch mode constroller for single switch LED Drivers● Wide Input range from 8VDC~100VDC
● Open loop peak current controller
● Application from a few mA to more than 1A output
● Constant off-time operation