Texas Instruments

UC3572DTR

UC3572DTR Description

The UC3572DTR from Texas Instruments is a high-performance flyback topology switching controller designed for negative transistor driver applications. Operating within a 4.75V to 30V supply range, this single-output IC delivers precise regulation with a 92% maximum duty cycle and 100kHz switching frequency, making it ideal for compact power supply designs. Its current limit and ramp control features enhance stability, while the surface-mount 8SOIC package ensures easy integration into space-constrained PCB layouts. The device is RoHS3 compliant, REACH unaffected, and rated for 0°C to 70°C operation, ensuring reliability in industrial and commercial environments.

UC3572DTR Features

• Output Type: Transistor driver with negative configuration for flexible design.
• Wide Input Range: Supports 4.75V–30V, accommodating diverse power sources.
• High Duty Cycle: 92% max efficiency for robust power delivery.
• Control Features: Integrated current limit and ramp control for enhanced transient response.
• Robust Packaging: 8SOIC tape & reel (TR) for automated assembly and moisture resistance (MSL 1).
• Compliance: RoHS3, REACH, and ECCN EAR99 certified for global use.
• No Synchronous Rectification: Simplified design for cost-sensitive applications.

UC3572DTR Applications

• Isolated Power Supplies: Flyback converters for industrial and telecom systems.
• Auxiliary Power Modules: Low-power bias generation in motor drives and inverters.
• Consumer Electronics: Compact adapters and LED drivers requiring high duty cycles.
• Automotive Systems: Non-critical subsystems where wide input voltage is essential.
• Battery-Powered Devices: Efficient energy conversion in portable equipment.

Conclusion of UC3572DTR

The UC3572DTR stands out for its high-duty-cycle operation, wide voltage range, and simplified control architecture, making it a versatile choice for flyback-based power solutions. Its industrial-grade robustness and compliance with environmental standards ensure reliability, while the 8SOIC package optimizes board space. Engineers will appreciate its balance of performance, cost-efficiency, and ease of integration, particularly in isolated power supplies and auxiliary power applications.