HVLED805TR

Overview

The HVLED805TR is an integrated high-voltage primary switcher designed for off-line LED driving applications. It combines a low-voltage PWM controller with an 800V avalanche-rugged power MOSFET in a single package. The device supports flyback topology with primary-sensing feedback, eliminating the need for opto-couplers and secondary-side current sensing. It features quasi-resonant operation for Zero Voltage Switching (ZVS) and offers both constant current (CC) and constant voltage (CV) regulation modes. Key electrical parameters include a supply voltage range of 11.5V to 23V, a maximum switching frequency limited below 166 kHz, and an output current capability of 1 A. The component operates within a junction temperature range of -40°C to 150°C and is available in a 16-SOIC surface-mount package.

Feature Summary

• Integrates a high-performance PWM controller and an 800V avalanche-rugged power MOSFET for compact design
• Utilizes primary-sensing feedback to eliminate opto-couplers and secondary-side components while maintaining accuracy
• Supports quasi-resonant operation with automatic frequency reduction at light loads to maintain ZVS efficiency
• Provides safe operation through constant current regulation during short circuits and constant voltage regulation during open strings

Applications

• Off-line LED lighting drivers up to 5W
• Compact and cost-effective LED illumination systems
• Applications requiring mains-independent constant current regulation

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to ensure correct packaging configuration. Confirm that the requested variant matches the required tape-and-reel or cut-tape specifications for your assembly process. Cross-reference the part number with the latest datasheet revision to ensure compatibility with your design requirements and regulatory standards.

Selection Notes

Select this component for designs prioritizing minimal external parts count and high reliability in low-power LED applications. The integrated MOSFET and primary-sensing architecture simplify transformer design and reduce bill-of-materials complexity. Ensure the application requires isolation via an auxiliary winding for CV/CC regulation, as the chip powers itself directly from the rectified mains when necessary.

Part Context

The HVLED805 belongs to STMicroelectronics' family of high-voltage primary switchers tailored for LED lighting. It addresses the market demand for efficient, compact solutions by integrating control logic and power switching into a single package. This integration reduces board space and simplifies thermal management compared to discrete solutions, making it suitable for consumer and general lighting fixtures.

Replacement Considerations

Publicly confirmed substitute part numbers are not provided in the source material. Consult STMicroelectronics official resources for direct replacements.