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The FLS1800XS is a half-bridge LLC resonant control IC designed for LED lighting applications. It integrates power switches and control logic to support medium- to high-power lumens. The device operates as a DC-DC regulator with dimming capabilities, delivering up to 7A output current. It utilizes a 9-SIP package configuration. This component is part of the FLS-XS series, which provides highly integrated solutions for general lighting power controllers.
Verify end-of-life status before procurement. The FLS1800XS is listed as discontinued by onsemi. Confirm availability through authorized distributors or secondary markets. Review product change notifications and environmental compliance documents prior to integration. Ensure supply chain stability given the discontinuation status.
Select this component for designs requiring integrated half-bridge LLC control in LED drivers. Consider the 9-SIP package constraints and 7A current capability. Evaluate compatibility with existing resonant tank components. Verify thermal management requirements for the SIP package. Assess suitability for medium- to high-power general lighting applications.
The FLS1800XS belongs to the FLS-XS series from onsemi, formerly Fairchild Semiconductor. This series focuses on general lighting power controllers with integrated power switches. The component addresses the need for compact, efficient solutions in LED lighting systems, combining control IC functions with power switching elements in a single package.
Public confirmed substitute part numbers are not available in the provided documentation. The component is marked as discontinued. Designers should consult onsemi for current alternatives or evaluate generic LLC controller solutions with external power switches.