The OZ9910AGN is a high-performance Cold Cathode Fluorescent Lamp (CCFL) controller designed by O2Micro for use in LCD backlighting applications. This controller is commonly found in LCD monitors, LCD TVs, and notebook computers. It offers a combination of efficiency, protection, and control features for driving CCFL lamps effectively.

Applications

• LCD Monitors
• LCD TVs
• Notebook LCD Panels
• Industrial LCD Displays

Features

• High Efficiency: Optimized for efficient power conversion to minimize energy waste and maximize battery life in portable devices.
• CCFL Driver: Specifically designed for driving CCFL lamps, providing stable and reliable operation.
• Integrated Protection: Includes Over-Voltage Protection (OVP), Over-Current Protection (OCP), and Short-Circuit Protection (SCP) to protect the device and the CCFL lamp from damage.
• Adjustable Frequency: Allows for fine-tuning of the operating frequency to optimize performance and minimize interference.
• Burst Mode Operation: Supports burst mode operation for improved efficiency at low dimming levels.
• Analog and PWM Dimming Control: Provides both analog and PWM dimming control for flexible brightness adjustment.
• Open Lamp Protection: Detects and protects against open lamp conditions, preventing damage to the inverter circuit.

Benefits

• Extended Battery Life: High efficiency minimizes power consumption, extending battery life in portable applications.
• Enhanced Reliability: Integrated protection features ensure stable and reliable operation, reducing the risk of damage and downtime.
• Precise Brightness Control: Flexible dimming control options allow for precise adjustment of the LCD panel brightness.
• Simplified Design: Reduces the number of external components required, simplifying the design and reducing the overall cost.
• Robust Protection: Safeguards the device and the CCFL lamp from various fault conditions, ensuring long-term reliability.

Additional Details

The OZ9910AGN typically operates with a wide input voltage range to accommodate various power sources. The device employs PWM (Pulse Width Modulation) control to precisely regulate the voltage and current delivered to the CCFL lamp. The adjustable frequency feature allows for optimizing the circuit based on the lamp characteristics and operating environment. The integrated protection features, including OVP, OCP, and SCP, are essential for ensuring the safety and longevity of both the controller and the CCFL lamp. The availability of both analog and PWM dimming control provides flexibility in achieving the desired brightness levels. A soft-start function is often included to minimize stress on components during startup. The OZ9910AGN is a versatile and reliable CCFL controller suitable for a wide range of LCD backlighting applications. It is typically packaged in a small outline package (SOP) for space efficiency.