The HV9120NG is a high-voltage EL (Electroluminescent) lamp driver IC from Supertex (now Microchip Technology). It's designed to efficiently drive EL lamps for backlighting or decorative purposes. The device integrates a high-voltage boost converter and a full-bridge driver to provide the necessary voltage and waveform for optimal EL lamp performance.

Applications

• Electroluminescent (EL) Lamp Backlighting
• Decorative EL Lighting
• Instrumentation Displays
• Automotive Displays
• Consumer Electronics

Features

• Integrated High-Voltage Boost Converter: Generates the high voltage required for EL lamp operation.
• Full-Bridge Driver: Provides the AC waveform necessary for driving EL lamps.
• Adjustable Output Voltage: Allows for optimizing EL lamp brightness and efficiency.
• Low Supply Current: Minimizes power consumption.
• Small Package: Reduces board space requirements.

Benefits

• Efficient EL Lamp Driving: Optimized for driving EL lamps with high efficiency.
• Reduced Component Count: Integration of boost converter and full-bridge driver minimizes external components.
• Adjustable Brightness: Output voltage adjustment allows for controlling EL lamp brightness.
• Long Battery Life: Low supply current extends battery life in portable applications.
• Compact Solution: Small package size reduces board space requirements.

Additional Details

The HV9120NG is typically available in a small outline integrated circuit (SOIC) package or similar. It operates by boosting the input voltage to the high voltage required by the EL lamp. The integrated full-bridge driver then generates the necessary AC waveform to drive the lamp. The output voltage can be adjusted to optimize the lamp's brightness and efficiency. The device's low supply current minimizes power consumption, making it suitable for battery-powered applications. The small package size reduces board space requirements, enabling compact designs. This IC is widely used in applications requiring efficient and compact EL lamp driving, such as backlighting for LCD displays, decorative lighting, and instrumentation displays. It is designed to provide reliable and efficient operation over a wide range of input voltages and operating conditions.