The OZ9928SN-A1-0-TR is a highly integrated and efficient LED backlight controller designed by O2Micro. It is specifically tailored for large-size LCD panels, offering advanced features and functionalities to enhance display performance and power efficiency. This controller supports both boost and buck-boost topologies, providing flexibility in backlight system design.

Applications:

• LCD TVs
• LCD Monitors
• Large-size LED Backlit Displays
• Industrial Displays

Features:

• High Efficiency: Optimized for minimal power loss and high conversion efficiency.
• Wide Input Voltage Range: Accommodates a variety of power sources.
• PWM Dimming: Provides precise control of LED brightness via Pulse Width Modulation.
• Over-Voltage Protection (OVP): Protects the LED array from damage due to excessive voltage.
• Over-Current Protection (OCP): Limits current flow to prevent overheating and component failure.
• Short-Circuit Protection (SCP): Shuts down the controller in the event of a short circuit.
• Open-Lamp Protection: Detects and responds to open LED strings to prevent damage.
• Phase Shifted Full Bridge Topology support.
• Adaptive Boost Control.

Benefits:

• Improved Display Quality: Precise brightness control and uniform LED illumination contribute to enhanced image clarity and color accuracy.
• Extended Product Lifespan: Comprehensive protection features minimize the risk of component failure and prolong the operational life of the display.
• Reduced Power Consumption: High efficiency design minimizes power waste, leading to lower operating costs and reduced environmental impact.
• Simplified System Design: Integrated functionalities reduce the need for external components, simplifying the design process and reducing board space requirements.
• Enhanced Reliability: Robust protection mechanisms ensure stable and reliable operation under a wide range of operating conditions.

Additional Details:

The OZ9928SN-A1-0-TR typically utilizes a small form factor package, suitable for compact designs. It often supports external compensation networks, allowing fine-tuning of the control loop for optimal performance. Datasheets will provide detailed electrical characteristics, timing diagrams, and application circuit examples. Its adaptive boost control optimizes power transfer under varying load conditions. The device also incorporates thermal shutdown protection which prevents damage under excessive temperature conditions.