FLS3217N

Overview

The FLS3217N is a single-output AC-DC offline switcher IC designed for flyback converter topologies. It integrates an internal high-voltage power switch and operates within a supply voltage range up to 30V. The device supports dimming functionality and is housed in a 7-pin DIP package with a standard 0.300-inch (7.62mm) width. It is rated for operation across a temperature range of -40°C to +125°C.

Feature Summary

• Integrates an internal high-voltage power switch for simplified circuit design
• Supports flyback topology for isolated AC-DC power conversion
• Includes built-in dimming capability for lighting applications

Applications

• Offline LED driver circuits
• Flyback power supplies
• Dimmable lighting systems

Procurement Notes

Verify component status as the FLS3217N is listed as obsolete or not recommended for new designs. Confirm availability through secondary market channels if sourcing is required. Ensure compatibility with existing PCB footprints and thermal management requirements before procurement.

Selection Notes

Select this component for legacy designs requiring a 7-DIP packaged AC-DC controller. Consider the operating temperature range and internal switch integration when evaluating thermal performance. Verify that the 30V supply limit meets system requirements.

Part Context

This part belongs to the FLS3217 family of AC-DC controllers manufactured by onsemi. It is specifically engineered for cost-effective, low-power offline applications. The 7-DIP package facilitates through-hole mounting, suitable for older manufacturing processes or specific mechanical constraints.

Replacement Considerations

Check for direct pin-compatible replacements from onsemi or other manufacturers. Evaluate alternative flyback controllers with similar DIP packaging and dimming features. Ensure any substitute maintains the same electrical characteristics and thermal ratings.