The OZ9904SN-A2-0-TR is a high-performance Cold Cathode Fluorescent Lamp (CCFL) controller designed by O2Micro for LCD backlight applications. This controller is specifically tailored for driving CCFL lamps in LCD monitors, LCD TVs, and notebook computers, offering a combination of efficiency, protection, and control features.

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 OZ9904SN-A2-0-TR is typically supplied in a small outline package (SOP) and utilizes tape and reel packaging (TR) for automated assembly. It often incorporates features like soft-start to reduce stress on components during startup. The IC employs a push-pull or half-bridge topology to drive the CCFL lamp efficiently. The adjustable frequency feature allows the designer to optimize the circuit for specific lamp characteristics and operating conditions. The integration of both analog and PWM dimming control provides flexibility in achieving the desired brightness level. The device also includes a synchronization function to allow multiple controllers to be used in parallel for larger displays. The OZ9904SN-A2-0-TR is a versatile and reliable CCFL controller suitable for a wide range of LCD backlighting applications.