Texas Instruments

UCC38C45P

UCC38C45P Description

The UCC38C45P from Texas Instruments is a high-performance DC-DC switching controller designed for boost, flyback, and forward converter topologies. This obsolete but robust IC features a transistor driver output with a positive configuration, supporting switching frequencies up to 1MHz. Operating within a 7.6V to 18V supply range, it delivers precise frequency control with a maximum duty cycle of 48%. Housed in an 8-pin DIP through-hole package, it is RoHS3 compliant and suitable for industrial environments with an operating temperature range of 0°C to 70°C (TJ).

UCC38C45P Features

• High Switching Frequency: Supports up to 1MHz, enabling compact power supply designs.
• Wide Input Voltage Range: 7.6V–18V supply flexibility for diverse applications.
• Single Output Driver: Positive-configuration transistor driver for simplified gate drive requirements.
• Frequency Control: Precision frequency adjustment for optimized power conversion.
• Robust Topology Support: Ideal for boost, flyback, and forward converters.
• Durable Packaging: Through-hole 8DIP for reliable mounting in harsh conditions.
• Compliance: RoHS3 compliant and REACH unaffected, meeting environmental standards.

UCC38C45P Applications

The UCC38C45P excels in isolated and non-isolated power supply designs, including:

• AC/DC Adapters: Efficiently drives MOSFETs in offline power supplies.
• Industrial Power Systems: Reliable performance in motor drives, PLCs, and automation equipment.
• Telecom Power Supplies: High-frequency operation suits compact telecom infrastructure.
• LED Drivers: Stable switching for constant-current LED power stages.
• Auxiliary Power Modules: Used in flyback converters for auxiliary rails in servers and UPS systems.

Conclusion of UCC38C45P

Though obsolete, the UCC38C45P remains a versatile choice for engineers needing a high-frequency, single-output switching controller with robust topology support. Its wide input range, precise frequency control, and durable packaging make it ideal for industrial, telecom, and power conversion applications. For legacy systems or specific designs requiring through-hole mounting, this IC offers a balance of performance and reliability.