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Technical content
Maximizing IC Performance Linear Dimmable Constant Current LED Driver Tel: 86-10-62662828 Copyright © 2020 Maxic Technology Corporation Page 1
DESCRIPTION
The MT7651L is a linear dimmable constant current LED driver IC, which can be widely used as the driver of dimmable light sources or lamps. MT7651L is implemented w ith no EMI issues . Besides, no external m agnetic component is required, small and low cost LED driving circuit is achieved. MT7651L supports PWM dimm ing, the PWM signal is converted to internal reference voltage to realize smooth and no flicker dimming. Embedded with line voltage compensation, the output current w ill be reduced when the input voltage exceed s the threshold , so as to ensure the input power does not change with the line voltage at the input range of 108Vac~132Vac. MT7651L integrates thermal regulation function to balance the output power and system temperature. The output current will be reduced while the junction temperature goes higher than the threshold, system reliability is guaranteed.
FEATURES
LED driving circuit is very small and low BOM cost Supports PWM dimming, the PWM signal is internally converted to no flicker analog dimming Internal high voltage startup circuit, ultra-fast start-up Integrates 300V high voltage MOSFET Set LED current through external resistor High LED current accuracy: ± 5% 1% dimming level and 0.1% dimming resolution Inherent thermal regulation Input line voltage compensation Suitable for 120Vac linear dimmable
applications
Available in ESOP8 package Intelligent LED filament lamp Intelligent LED bulb Other intelligent LED lighting application Typical Application Circuit MT7651L DRAIN CS GNDPWM NC LN NC VAC BD1 VIN FU1 CE1 Rin Rcs GND