UCC39421PWTR

DC DC Switching Controllers Overview

The UCC39421PWTR is a synchronous rectifier controller IC from Texas Instruments, designed for high-efficiency power conversion. It supports Boost, Flyback, and SEPIC topologies with an adjustable switching frequency range of 150kHz to 1.2MHz. The device features a maximum duty cycle of 0.88 and operates on a supply voltage of 1.8V to 8V. Packaged in a 16-TSSOP (0.300 inch / 7.62mm width) format, it includes integrated control features such as enable, frequency control, battery low detection, and reset functions. It is rated for operation within a temperature range of 0°C to 70°C.

DC DC Switching Controllers Feature Summary

• Integrated synchronous rectification capability for enhanced efficiency in DC-DC converter designs.
• Supports multiple converter topologies including boost, flyback, and SEPIC configurations.
• Includes comprehensive control features such as enable, frequency control, battery low detection, and reset.

DC DC Switching Controllers Applications

• Boost converter implementations
• Flyback converter designs
• SEPIC topology applications

DC DC Switching Controllers Procurement Notes

Verify the specific suffix 'PWTR' confirms the TSSOP package and tape-and-reel shipping method. Confirm the component status, as availability may vary between active production and distributor surplus stocks. Ensure the operating temperature range meets the application requirements. Validate pinout compatibility if replacing existing designs.

DC DC Switching Controllers Selection Notes

Select this component when designing multi-topology converters requiring synchronous rectification. The wide input voltage range and adjustable frequency offer design flexibility. Consider the thermal performance within the specified operating temperature range. Verify that the required control signals align with the available enable and reset features.

DC DC Switching Controllers Part Context

This part belongs to the UCC39421 family of power management ICs. It shares core functionality with variants like the UCC39421N, differing primarily in packaging and shipping configuration. The family is characterized by its versatility in supporting various DC-DC converter architectures with integrated control logic.

DC DC Switching Controllers Replacement Considerations

The UCC39421N is a documented alternative offering identical electrical specifications but utilizes a 16-PDIP through-hole package instead of the surface-mount TSSOP form factor. Designers must account for mechanical footprint differences when substituting.