LC5549LF

Overview

The LC5549LF is a single-stage power factor corrected off-line switching regulator IC designed for isolated type LED drivers. It incorporates an internal power MOSFET and supports input capacitorless applications. The device operates within a supply voltage range of up to 20V and provides one output. It features dimming capabilities and is housed in a TO-220F-7 package with through-hole mounting. The component functions reliably across a wide temperature range from -55°C to 115°C.

Feature Summary

• Integrates power MOSFET for compact design
• Supports input capacitorless applications
• Single-stage power factor correction
• Includes dimming functionality

Applications

• Isolated LED driver circuits
• AC/DC offline switcher designs
• Power factor corrected lighting systems

Procurement Notes

Verify the specific suffix and package variant against the manufacturer's current documentation, as product status may change. Confirm that the TO-220F-7 form factor matches the target PCB layout requirements. Check for any updated environmental compliance certifications or RoHS status changes prior to finalizing procurement specifications.

Selection Notes

Select this component for applications requiring integrated power switching without external discrete MOSFETs. Ensure the design accommodates the through-hole mounting style and the specified thermal operating limits. Verify compatibility with the required dimming control signals and input voltage constraints before integration into the final system architecture.

Part Context

This part belongs to the LC554xLF series by Sanken Electric, which focuses on single-stage PFC solutions. These ICs are engineered to simplify LED driver designs by combining regulation and power factor correction in a single package. The series targets efficient, cost-effective lighting solutions with reduced component count.

Replacement Considerations

Public confirmed substitute part numbers were not identified in the provided source material.