The OZ828LN is a backlight controller IC from O2Micro, primarily designed for driving LED backlights in LCD panels, commonly found in monitors and TVs. It integrates crucial functionalities like boost conversion and current regulation to ensure efficient and uniform lighting across the display.

Applications

• LCD Monitors
• LCD TVs
• LED Backlight Systems
• Industrial Displays

Features

• Integrated Boost Converter: Steps up the input voltage to the required voltage for the LED backlight string.
• Multiple Current Regulators: Provides independent current control to multiple LED strings, ensuring uniform brightness.
• PWM Dimming Control: Enables brightness adjustment through Pulse Width Modulation.
• Over-Voltage Protection (OVP): Protects the LED backlight from damage due to excessive voltage.
• Over-Current Protection (OCP): Prevents damage from excessive current flow.
• Thermal Shutdown Protection (OTP): Shuts down the IC to prevent damage from overheating.
• Short Circuit Protection (SCP): Safeguards the circuit from short-circuit conditions.
• Analog Dimming Support: Allows for continuous brightness control.

Benefits

• High Efficiency: Minimizes power loss and reduces heat generation, contributing to energy savings.
• Uniform Brightness: Ensures consistent brightness across the entire LCD panel, improving viewing experience.
• Enhanced Reliability: Protection features (OVP, OCP, OTP, SCP) increase the lifespan and reliability of the backlight system.
• Simplified Design: Integration reduces the number of external components, simplifying the circuit design and reducing costs.
• Precise Brightness Control: Allows for fine-tuning of the backlight brightness to suit different viewing conditions and user preferences.

Additional Details

The OZ828LN is designed to be a compact and efficient solution for LED backlight control. It operates within a specific voltage range, typically found in LCD monitor and TV power supplies. The current regulation capability ensures each LED string receives the correct current, preventing brightness variations. The PWM dimming feature allows for dynamic adjustment of the backlight intensity. Further specifications, such as the operating voltage range and current output capabilities, can be found in the product datasheet.