The HV809LG is a high-voltage LED driver IC from Supertex, Inc., designed for driving LED lamps and displays. It features a high level of integration, providing a compact and efficient solution for various LED lighting applications. The IC is specifically designed for offline LED drivers, meaning it can operate directly from the AC line voltage.

Applications:

• LED Bulb Replacement
• LED Tube Lighting
• LED Downlights
• Architectural Lighting
• General LED Lighting

Features:

• High-voltage start-up
• Single-stage power factor correction (PFC)
• Quasi-resonant operation
• Low total harmonic distortion (THD)
• Overvoltage protection (OVP)
• Overcurrent protection (OCP)
• Overtemperature protection (OTP)
• Open-load protection
• Short-circuit protection
• Adjustable switching frequency
• Integrated MOSFET driver

Benefits:

• High Efficiency: The quasi-resonant operation minimizes switching losses, resulting in high efficiency.
• Improved Power Quality: Active PFC ensures a high power factor and low THD, meeting regulatory requirements.
• Enhanced Reliability: Comprehensive protection features safeguard the LED driver and the LED load.
• Simplified Design: High integration reduces external component count, simplifying the design process.
• Cost-Effective Solution: The HV809LG provides a cost-effective solution for LED lighting applications.
• Extended LED Lifespan: By providing a stable and regulated current to the LEDs, it helps extend their lifespan.

Additional Details:

The HV809LG operates from a wide input voltage range, making it suitable for worldwide use. The integrated high-voltage start-up circuit eliminates the need for an external start-up resistor, further reducing component count and cost. The adjustable switching frequency allows designers to optimize performance for specific applications. The comprehensive protection features, including overvoltage, overcurrent, overtemperature, open-load, and short-circuit protection, ensure robust and reliable operation. This IC is designed to meet the stringent requirements of modern LED lighting applications, providing a highly efficient and reliable solution. The single-stage PFC design simplifies the circuit and reduces the overall cost of the system. It's a suitable choice for various LED lighting systems requiring compact size and efficient power conversion.