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TOP254EN Power Integrations Off-Line Switcher IC

TOP254EN Power Integrations – TO-263-6L

is an advanced off-line switcher IC from Power Integrations (PI) that integrates a high-voltage power MOSFET, PWM controller, fault protection, and startup circuitry into a single compact TO-263-6L surface-mount package. As part of the TOPSwitch-HX family, this device is optimized for high-efficiency power supplies such as AC-DC adapters, open-frame power supplies, industrial control modules, and consumer electronics. With built-in overvoltage protection, thermal shutdown, and frequency jittering for EMI reduction, the TOP254EN significantly simplifies switch-mode power supply (SMPS) design while reducing component count and cost.

How EstiSource Helps

EstiSource supports design and sourcing teams by streamlining the acquisition of critical components like the TOP254EN integrated off-line switcher. For B2B buyers, we offer bulk price comparison from authorized distributors, access to certified alternates, and automated RFQ tools. For B2C and small-volume buyers, we provide verified single or small batches and help avoid counterfeit ICs. Startups and engineering teams benefit from reduced sourcing time, BOM pricing auto-suggestions, and access to design validation insights to accelerate product development.

Why Choose EstiSource for Sourcing

At EstiSource, we go beyond just cost and procurement—we bring component intelligence to your engineering process. Whether you're designing an SMPS for a washing machine, a power adapter, or an industrial controller, our platform enables real-time price transparency, sourcing confidence, and rapid design enablement. You’ll save hours in validation, negotiation, and RFQ processing—all while ensuring component reliability from prototype to scale.

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