UC3874N-2

DC DC Switching Controllers Overview

The UC3874N-2 is a high-efficiency, synchronous step-down buck controller manufactured by Texas Instruments. It operates within an input voltage range of 4.5 V to 36 V and supports switching frequencies between 80 kHz and 120 kHz. The device features a maximum output current capability of 250 mA and functions reliably across an operating temperature range of 0°C to 70°C. It utilizes a 18-pin PDIP package designed for through-hole mounting.

DC DC Switching Controllers Feature Summary

• Synchronous rectification architecture for enhanced conversion efficiency
• Integrated step-down buck control topology
• Through-hole compatible packaging for standard board integration

DC DC Switching Controllers Applications

• High-efficiency DC-DC power supply designs
• Industrial equipment power management systems
• Consumer electronics requiring stable step-down voltage regulation

DC DC Switching Controllers Procurement Notes

Verify the specific suffix designation against official manufacturer documentation to confirm pinout compatibility and electrical specifications. Ensure the procurement source provides valid traceability for the component's manufacturing origin. Cross-reference the package type with design requirements to confirm mechanical fitment before finalizing orders.

DC DC Switching Controllers Selection Notes

Select this component for applications requiring synchronous buck control with through-hole assembly constraints. Evaluate the 4.5 V to 36 V input range against system supply rails. Confirm that the 80 kHz to 120 kHz frequency range aligns with thermal and electromagnetic interference requirements for the target enclosure.

DC DC Switching Controllers Part Context

This part belongs to the Texas Instruments UC3874 family of switching controllers. It is specifically engineered as a synchronous step-down solution, distinguishing it from asynchronous variants in the broader portfolio. The device integrates necessary control logic for efficient power conversion in compact form factors suitable for general-purpose industrial and commercial electronics.

DC DC Switching Controllers Replacement Considerations

Direct substitutes include other synchronous buck controllers from the same family or equivalent third-party components offering similar input voltage ranges and through-hole packaging. Verify pin-to-pin compatibility and thermal performance characteristics when considering alternative sources.