UCC2974PW

Overview

The UCC2974PW is a synchronous buck controller manufactured by Unitrode, designed for high-efficiency power conversion in demanding environments. It operates with an input voltage range of 4.5 V to 60 V and supports output currents up to 10 A when paired with external MOSFETs. The device integrates a precision 0.8 V reference and features adjustable switching frequencies from 30 kHz to 500 kHz. It includes comprehensive protection mechanisms such as cycle-by-cycle current limiting, thermal shutdown, and undervoltage lockout. The component is housed in a TSSOP-16 package and is qualified for operation across an extended temperature range of -40°C to +125°C.

Feature Summary

• Integrated synchronous buck control architecture enabling efficient step-down voltage regulation
• Wide operating input voltage range suitable for industrial and automotive bus architectures
• Built-in protection logic including thermal shutdown and cycle-by-cycle current limiting

Applications

• Industrial point-of-load (POL) converters
• Automotive infotainment and body control modules
• Telecommunications equipment power distribution

Procurement Notes

Verify the manufacturer designation carefully, as Unitrode's semiconductor assets were acquired by Texas Instruments. Ensure the datasheet corresponds to the TI publication for the UCC2974 series to confirm pin compatibility and electrical specifications. Cross-reference the PW suffix with official packaging data to validate the TSSOP-16 physical dimensions and lead finish before finalizing procurement orders.

Selection Notes

Select this controller for applications requiring wide input voltage tolerance and integrated synchronous rectification control. Evaluate the thermal performance requirements against the TSSOP-16 package capabilities. Confirm that the external MOSFET selection aligns with the driver strength and switching frequency settings. Verify that the required output voltage falls within the supported regulation range defined by the internal reference.

Part Context

The UCC2974 belongs to the family of synchronous buck controllers designed for robust power management solutions. Originally developed under the Unitrode brand, these components are now managed within Texas Instruments' portfolio following corporate acquisition. This specific model targets high-power density applications where efficiency and reliability are critical, bridging legacy design requirements with modern power stage technologies.

Replacement Considerations

Consult Texas Instruments documentation for direct equivalents or pin-compatible upgrades within the UCC2xxx series. Verify functional compatibility regarding switching frequency ranges and protection thresholds when substituting with other synchronous buck controllers.