The HV9910NG-G is a high-performance, constant current, PWM LED driver IC manufactured by Supertex, Inc. It is designed for driving high-brightness LEDs in a variety of lighting applications. This IC utilizes a quasi-resonant buck topology to achieve high efficiency and low EMI. It's a versatile solution for both dimmable and non-dimmable LED drivers.

Applications:

• LED Lighting: Including general illumination, architectural lighting, and signage.
• Automotive Lighting: Used in car headlights, taillights, and interior lighting.
• Backlighting: In LCD displays for televisions and monitors.
• Street Lighting: Providing efficient and reliable lighting solutions for urban environments.
• Industrial Lighting: For warehouses, factories, and other industrial settings.

Features:

• Quasi-Resonant Buck Topology: Provides high efficiency and low EMI.
• Wide Input Voltage Range: Operates from a wide range of input voltages, typically 8V to 450V.
• Constant Current Output: Ensures consistent LED brightness and prolongs LED lifespan.
• PWM Dimming: Supports PWM dimming control for adjustable brightness.
• Internal Over-Temperature Protection: Protects the IC from thermal damage.
• Open LED Protection: Detects and protects against open LED conditions.
• Short Circuit Protection: Safeguards the IC and LEDs from short circuit faults.
• Accurate Output Current Control: Maintains a stable and precise LED current.

Benefits:

• High Efficiency: Reduces energy consumption and lowers operating costs.
• Long LED Lifespan: Constant current output ensures consistent and reliable LED operation, extending their lifespan.
• Improved System Reliability: Integrated protection features safeguard the IC and LEDs from various faults.
• Flexible Dimming Control: PWM dimming allows for adjustable brightness levels to suit different applications.
• Simplified Design: Reduces external component count, simplifying the design process.
• Reduced EMI: The quasi-resonant buck topology minimizes electromagnetic interference.

Additional Details:

The HV9910NG-G is typically available in a PDIP-8 or SOIC-8 package. It requires minimal external components, making it easy to integrate into various LED driver circuits. It operates at a switching frequency that is automatically adjusted based on the input voltage and output current, optimizing efficiency across a wide operating range. The IC incorporates a robust protection scheme, including over-temperature, open LED, and short-circuit protection, ensuring reliable operation in harsh environments.