LS7641

Reverse Phase (Trailing-Edge) Light Dimmer For LED Lamps (14 Pins)
View Datasheet
View Footprint on SnapEDA
Buy on Digi-Key

All of our Standard Products are RoHS Compliant

$3.52$3.80

Select Product and Package Type below:

LS7641

SKU N/A Categories , ,

Description

LS7641 is a monolithic CMOS lamp dimmer IC designed for in line wall switch applications driving both LED and incandescent lamps. It uses Reverse Phase dimming technology wherein the brightness of a lamp is controlled by controlling the turn-off angle in ac half cycles using a FET. This is in contrast with Leading edge dimming technology wherein the brightness is controlled by varying the turn-on angle using a triac. Reverse Phase dimming produces total flicker free dimming down to extremely low brightness. It also eliminates the following problems associated with triac dimming when driving LED lamps:

• Acoustic and RFI noise
• Failure of the triac to latch due to load converter oscillation delay
• Flicker at low brightness due to insufficient holding current for the triac

Features:

• For use in wall switch dimmers driving ceiling lamps.
• Efficient dimming control for both LED and incandescent bulbs.
• Eliminates RFI associated with triac dimmers.
• Continuous analog dimming steps from 0 to 100% brightness.
• Achieves flicker free ultralow brightness for LED bulbs unachievable with triac dimmers.
• Overcurrent sense input for safety shutdown.
• Adjustable turn-on angle for compatibility with light bulbs of different characteristics.
• 50Hz/60Hz operation.
• 5V supply.
• Available in SOIC-14 and TSSOP-14

Additional information

Product

LS7641-S (14-Pin SOIC), LS7641-TS (14-Pin TSSOP), LS7641 (14-Pin DIP)

Reviews

There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.