G5345

Global Mixed-mode Technology G5345 Triac Dimmable Offline LED Driver Features Triac dim decoder circuit for LED dimming Application voltage range 80VAC – 277VAC Capable of controlling LED currents greater than 1A Low quiescent current Programmable off-time allows for constant ripple current Input supply under-voltage lockout Thermal shutdown Over current protection No visible flicker MSOP-8 package Applications Retro Fit Lamps Solid State Lighting LED modules such as LED spots, down-lights LED strings suitable for retail displays, etc. General Description The G5345 is an adaptive constant off-time AC/DC buck controller for dimmable LED luminaries designed to be compatible with triac dimmers. The G5345 provides a constant current for illuminating high power LEDs and includes a triac dim decoder. The LED brightness is modulated by the scheme of PWM-dimming. The G5345 includes a bleeder circuit to ensure proper triac operation by allowing current flow while the line voltage is low t...