IRS29831PBF

Overview

The IRS29831PBF is an integrated LED driver control IC with a built-in power MOSFET designed for flyback, buck, and boost converter topologies. It features primary-side regulation to eliminate optocouplers in fixed-load applications. The device operates in critical conduction mode (CrCM) with burst mode at light loads. Key electrical parameters include a 700 V integrated switch, 18 V maximum supply voltage, 600 mA maximum output current, and a switching frequency of 320 kHz. It supports triac dimming and offers protection against open/short circuits and inductor saturation.

Feature Summary

• Integrated 700 V power MOSFET for compact design
• Primary-side constant power regulation without optocouplers
• Triac dimming compatibility for smooth brightness control
• Critical conduction mode operation with burst mode efficiency

Applications

• Isolated and non-isolated LED drivers
• AC-DC offline switchers
• Flyback, buck, and boost converter architectures

Procurement Notes

Verify the component status as obsolete before procurement planning. Confirm that the SOIC-8 package and lead-free RoHS compliance meet your manufacturing requirements. Ensure supply chain alternatives are identified due to potential end-of-life constraints. Check for moisture sensitivity levels and storage conditions if inventory is held long-term.

Selection Notes

Select this IC for cost-sensitive LED lighting designs requiring high power factor and low total harmonic distortion. It is suitable for applications where primary-side regulation simplifies the bill of materials. Consider its integration level for reducing external component count compared to discrete solutions.

Part Context

Infineon Technologies manufactures the IRS29831PBF within its LEDrivIR series. This component belongs to the display drivers and controllers category, specifically targeting LED driver ICs. It is part of Infineon's portfolio for efficient power management in lighting applications.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. As the part status is listed as obsolete, consult official Infineon channels for recommended replacements or next-generation equivalents.