Texas Instruments

UC3872DWTR

UC3872DWTR Description

The UC3872DWTR from Texas Instruments is a high-performance ballast controller IC designed for precision control in lighting applications. Operating within a 4.5V to 24V supply range, it delivers stable performance with a 6mA supply current, making it energy-efficient for power-sensitive designs. The device operates at a frequency range of 57kHz to 78kHz, ensuring compatibility with various ballast configurations. Packaged in a 16-pin SOIC and available in Tape & Reel (TR), it is optimized for surface-mount assembly and high-volume production. With RoHS3 compliance and REACH unaffected status, it meets stringent environmental standards.

UC3872DWTR Features

• Wide Voltage Range (4.5V–24V): Supports flexible power supply designs.
• Low Supply Current (6mA): Reduces power consumption in standby or operational modes.
• Fixed Frequency Operation (57kHz–78kHz): Ensures consistent performance in resonant ballast topologies.
• Surface-Mount Packaging (16-SOIC): Ideal for automated PCB assembly.
• Robust Environmental Compliance: RoHS3 and REACH compliant, with MSL 2 (1 Year) moisture sensitivity.
• No Dimming Support: Optimized for non-dimmable ballast applications, simplifying design complexity.

UC3872DWTR Applications

The UC3872DWTR excels in electronic ballast control for fluorescent and HID lighting systems, where precise frequency regulation is critical. Its wide operating temperature range (0°C to 70°C) makes it suitable for commercial and industrial lighting fixtures. Typical use cases include:

• Fixed-output fluorescent ballasts in office/retail lighting.
• High-intensity discharge (HID) lamp drivers for outdoor and warehouse lighting.
• Resonant converter designs requiring stable frequency control.

Conclusion of UC3872DWTR

The UC3872DWTR stands out for its reliability, efficiency, and ease of integration in non-dimmable ballast systems. Its low power consumption, wide voltage range, and robust packaging make it a preferred choice for lighting designers. While it lacks dimming functionality, its fixed-frequency operation ensures predictable performance in resonant topologies. For engineers seeking a cost-effective, compliant, and high-performance ballast controller, this IC delivers a compelling solution.