IRS25411PBF

Overview

The IRS25411PBF is a high-voltage, high-frequency buck control IC designed for constant current LED lighting applications. It operates with a supply voltage range of 8V to 16.6V and supports a switching frequency of 500kHz. The device features PWM dimming capability and is housed in an 8-SOIC package. It functions as a DC-DC controller without internal switches, suitable for driving external power stages.

Feature Summary

• High-frequency buck control topology for efficient LED driver designs
• Supports PWM dimming for precise light intensity control
• Wide operating temperature range from -25°C to 125°C

Applications

• Constant current LED lighting systems
• Buck converter based LED drivers
• General-purpose DC-DC control circuits

Procurement Notes

Verify component status carefully as the IRS25411PBF is listed as obsolete by major distributors. Confirm availability of active substitutes such as the IRS25411STRPBF before finalizing procurement plans. Ensure compatibility with existing PCB footprints and design specifications when transitioning to replacement parts.

Selection Notes

Select this component for applications requiring a dedicated buck controller with integrated PWM dimming functionality. Consider the 8-SOIC package constraints and the need for external switching components. Evaluate thermal management requirements given the specified junction temperature limits and operating conditions.

Part Context

This part belongs to Infineon's family of LED lighting driver ICs. It is specifically categorized as a buck controller within their power management portfolio. The device is designed to simplify LED driver implementation by integrating necessary control logic into a compact surface-mount package.

Replacement Considerations

The IRS25411STRPBF is identified as a similar available substitute. Verify pinout compatibility and electrical specifications before substitution. The STRPBF variant typically differs only in packaging format (tape and reel vs. tube).