TA9687 Datasheet PDF learn more.
Part number: TA9687GN
Functions: LCDM Inverter Controller.
Package information: SOP 16 Pin
Manufacturer: O2Micro
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Description
The TA9687 is a high-performance CCFL controller IC designed to drive 2 to 6 cold cathode fluorescent lamps in large LCD backlight systems, typically offered in a 16-pin SOP package. It features constant frequency operation, high-current MOSFET drive capability, integrated protection functions, and optimized soft-start control for reliable lamp ignition and steady-state operation. This controller is widely used in LCD backlight inverters, display systems, and applications requiring efficient high-voltage lamp driving.
Features
- Constant operating frequency for stable system performance
- Supports full-bridge topology for high efficiency
- High drive current capability for external MOSFETs
- Built-in ignition control for CCFL startup
- User-defined ignition time and shutdown delay
- Integrated open-lamp and overvoltage protection
- Optimized soft-start function to reduce stress
- Handles both positive and negative impedance during ignition
Pinout
Design Notes
- Use proper transformer design to generate high-voltage AC for CCFL operation
- Ensure MOSFET selection supports required switching current and voltage
- Layout should minimize noise and switching losses in full-bridge topology
- Carefully tune ignition timing to avoid lamp overstress
- Thermal management is important for long-term reliability
Typical Circuit Usage
- CCFL inverter circuits for LCD backlighting
- Full-bridge DC-AC conversion stages
- Multi-lamp driving systems in display panels
- High-voltage AC generation for lighting applications
How to Choose This Part
- Select for multi-lamp CCFL backlight systems (2–6 lamps)
- Suitable when high efficiency and integrated protection are required
- Ideal for designs using full-bridge topology
- Choose when precise ignition control and soft-start are important
- Useful for cost-sensitive LCD inverter designs
Applications
- LCD TV and monitor backlight systems
- Industrial display panels
- Medical imaging displays
- Automotive display backlighting (legacy CCFL systems)
Alternative / Equivalent Products
- OZ960
- BD9883F
- FAN7314
- MP1010B
[ … ]
TA9687 PDF File
