TPS54974PWPR Equivalent & Substitute Parts

Part Overview

The TPS54974PWPR is a buck switching regulator IC from Texas Instruments' SWIFT™ series, designed for positive adjustable output applications. It delivers 9A output current with a fixed switching frequency of 350kHz and integrated synchronous rectification. The device operates across an input voltage range of 3V to 4V with adjustable output voltage from 0.891V to 3.6V.

The TPS54974PWPR is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications currently utilizing this regulator.

Substiute Parts

TPS54974PWPR

Texas InstrumentsIn Stock: 1196TPS54974PWPR Datasheet

Current PartRFQ

TPS54980PWPR

Texas InstrumentsIn Stock: 4334TPS54980PWPR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TPS54974PWPR is determined by strict equivalence across the following critical parameters:

• Topology & Function: Buck switching regulator with step-down configuration
• Output Characteristics: Positive adjustable output, single output channel, 9A current capability
• Voltage Specifications: Input range 3V to 4V, output range 0.891V to 3.6V
• Switching Frequency: 350kHz fixed frequency operation
• Rectification: Integrated synchronous rectifier
• Package: 28-PowerTSSOP form factor with identical pinout and thermal characteristics
• Compliance: ROHS3 compliant, MSL 2 rating

The TPS54980PWPR meets all these criteria and is identified as the manufacturer-recommended substitute. Both devices share identical electrical specifications, package geometry, and functional characteristics, enabling direct replacement in existing designs.

Parameter Comparison

Engineering Selection Recommendations

The TPS54980PWPR is the direct equivalent substitute for the obsolete TPS54974PWPR. Both devices are ROHS3 compliant and carry identical MSL ratings, ensuring compatibility with current manufacturing and environmental standards.

The TPS54980PWPR offers an extended junction temperature rating of -40°C to 125°C compared to the TPS54974PWPR's -40°C to 85°C ambient temperature specification. This extended thermal range provides additional operational margin in high-temperature environments without requiring circuit modifications.

The TPS54980PWPR is classified as Last Time Buy, indicating limited availability. Designs currently using the TPS54974PWPR should transition to the TPS54980PWPR to secure supply continuity. The identical electrical specifications, package geometry, and pinout enable direct substitution without PCB redesign or application circuit modifications.

Frequently Asked Questions (FAQ)

Q: Can the TPS54980PWPR directly replace the TPS54974PWPR without PCB modifications?

A: Yes. Both devices share identical pinout, package dimensions (28-PowerTSSOP), electrical specifications, and functional characteristics. Direct substitution is possible without PCB layout changes.

Q: What is the primary difference between these two parts?

A: The TPS54980PWPR extends the junction temperature operating range to 125°C compared to the TPS54974PWPR's 85°C ambient temperature limit. Both devices maintain identical input/output voltage ranges, current ratings, and switching frequency.

Q: Why is the TPS54974PWPR obsolete?

A: The TPS54974PWPR has reached end-of-life status. The TPS54980PWPR serves as the manufacturer-recommended replacement, offering equivalent performance with extended thermal specifications.

Q: Are there any compliance or certification differences?

A: No. Both parts are ROHS3 compliant with MSL 2 ratings, ensuring equivalent compliance with current environmental and manufacturing standards.

Q: What is the inventory status of the substitute part?

A: The TPS54980PWPR is available with 4270 pieces in stock as Last Time Buy inventory. The TPS54974PWPR has 1090 pieces available but is obsolete. Procurement should prioritize the TPS54980PWPR for new designs and ongoing production.