IS31LT3918
IS31LT3918 is manufactured by ISSI.
HIGH VOLTAGE LED LIGHTING DRIVER WITH SWITCH DIMMING
OCTOBER 2011 GENERAL DESCRIPTION IS31LT3918 LED driver IC is a peak current detection buck converter which operates in constant off time mode. It operates over a very wide input voltage supply range of 6VDC to 450VDC or 110VAC/220VAC. IS31LT3918 incorporates the special feature of switch dimming by detecting OFF-ON cycles of the main power switch. When the switch is cycled within a 2 second period (typical) the device automatically switches the dimming level to the next step. As a result, dimming can be achieved without replacing any wiring in the original system. There are multiple modes of switch dimming that the user may...
