Reverse Phase (Trailing-Edge) Light Dimmer For LED Lamps (14 Pins)
LS7641-S, LS7641-TS, LS7641
LS7641 is a monolithic CMOS lamp dimmer designed for wall switch applications driving LED and incandescent lamps. It uses reverse phase dimming technology wherein the brightness of a lamp is controlled by controlling the duty cycle of the on state by varying the turn-off angle of a MOSFET driving the lamp during ac half cycles. This is in contrast with triac dimming technology wherein the duty cycle is controlled by varying the turn-on angle.
Dimmable Direct-AC LED Driver (8 Pins)
The LS9100x is a High Voltage full-bridge rectifier combined with a current limiter source circuit and protection circuit. Its rugged design is optimized for driving LED banks directly from the main utility line eliminating external components by merging them into a…
Dimmable LED Driver (8 Pins)
LS9200 is a monolithic CMOS device for driving and dimming LED networks. The regulated constant current is maintained with an external sense resistor forming part of a feedback loop. The maximum LED load current is set by the sense resistor whose duty cycle can be modulated with a built in PWM circuit. The Pulse Width modulated duty cycle results in chromatic shift-free dimming over the entire range of 0% to 100%