TPS54980PWPR Equivalent & Substitute Parts

Part Overview

The TPS54980PWPR 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 operates across an input voltage range of 3V to 4V. The device features a synchronous rectifier and is housed in a 28-PowerTSSOP package.

This part is currently in Last Time Buy status, indicating end-of-life production. Identifying qualified substitute components ensures design continuity and supply chain reliability for applications requiring equivalent or enhanced performance characteristics.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Category	Power Management (PMIC)
Function	Step-Down (Buck)
Output Configuration	Positive Adjustable
Number of Outputs	1
Current - Output	9A
Voltage - Input (Min/Max)	3V to 4V
Voltage - Output (Min/Max)	0.891V to 3.6V
Frequency - Switching	350kHz
Synchronous Rectifier	Yes
Operating Temperature	-40°C to 125°C (TJ)
Package / Case	28-PowerTSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
MSL Rating	2 (1 Year)

Substitute Part Grouping Explanation

Substitution of the TPS54980PWPR is determined by the following critical parameters:

Functional Equivalence Criteria:

Output current rating of 9A
Buck topology with positive adjustable output
Single output configuration
Synchronous rectifier implementation
RoHS3 compliance and MSL 2 rating

Electrical Compatibility Criteria:

Input voltage range must encompass or exceed 3V to 4V
Output voltage adjustability must support minimum 0.891V
Operating temperature range of -40°C to 125°C
Surface mount technology

The substitute part TPS62871QWRXSRQ1 meets these criteria with enhanced specifications in input voltage range (2.7V to 6V) and output voltage minimum (0.4V), while maintaining the 9A output current and synchronous rectifier functionality. However, package form factor differs, requiring PCB layout redesign.

Parameter Comparison

Parameter	TPS54980PWPR	TPS62871QWRXSRQ1
Manufacturer	Texas Instruments	Texas Instruments
Category	Power Management (PMIC)	Power Management (PMIC)
Function	Step-Down	Step-Down
Output Configuration	Positive Adjustable	Positive Adjustable
Number of Outputs	1	1
Current - Output	9A	9A
Voltage - Input (Min)	3V	2.7V
Voltage - Input (Max)	4V	6V
Voltage - Output (Min)	0.891V	0.4V
Voltage - Output (Max)	3.6V	3.35V
Synchronous Rectifier	Yes	Yes
Operating Temperature	-40°C to 125°C (TJ)	-40°C to 125°C (TA)
Package / Case	28-PowerTSSOP	16-TFQFN Exposed Pad
Mounting Type	Surface Mount	Surface Mount, Wettable Flank
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	2 (1 Year)	2 (1 Year)
Product Status	Last Time Buy	Active
Grade	Standard	Automotive
Qualification	Not specified	AEC-Q100

Engineering Selection Recommendations

The TPS62871QWRXSRQ1 is a qualified substitute for the TPS54980PWPR based on the following factors:

Functional Alignment: Both devices deliver 9A output current with buck topology, positive adjustable output, and synchronous rectifier implementation. Electrical specifications are compatible within the specified operating ranges.

Compliance & Certification: Both parts maintain ROHS3 compliance and MSL 2 rating. The TPS62871QWRXSRQ1 carries AEC-Q100 automotive qualification, providing additional reliability assurance for demanding applications.

Product Lifecycle: The TPS62871QWRXSRQ1 is in Active status with 2659 units in stock, ensuring long-term availability compared to the Last Time Buy status of the TPS54980PWPR.

Design Considerations: Package transition from 28-PowerTSSOP to 16-TFQFN requires PCB layout modification. The TPS62871QWRXSRQ1 offers wider input voltage range (2.7V to 6V) and lower minimum output voltage (0.4V), providing greater design flexibility for future applications.

Frequently Asked Questions (FAQ)

Q: Can the TPS62871QWRXSRQ1 directly replace the TPS54980PWPR without PCB modification?

A: No. The TPS62871QWRXSRQ1 uses a 16-TFQFN package versus the 28-PowerTSSOP package of the TPS54980PWPR. PCB layout redesign is required, including pin mapping verification and thermal management adjustments.

Q: What are the key electrical differences between these parts?

A: The TPS62871QWRXSRQ1 supports a wider input voltage range (2.7V to 6V versus 3V to 4V) and lower minimum output voltage (0.4V versus 0.891V). Both maintain 9A output current and synchronous rectifier functionality. Switching frequency differs: TPS54980PWPR operates at fixed 350kHz, while TPS62871QWRXSRQ1 supports multiple frequencies (1.5MHz, 2.25MHz, 2.5MHz, 3MHz).

Q: Is the TPS62871QWRXSRQ1 suitable for automotive applications?

A: Yes. The TPS62871QWRXSRQ1 carries AEC-Q100 qualification and Automotive grade designation, making it suitable for automotive-grade designs. The TPS54980PWPR does not specify automotive qualification.

Q: What is the impact of package size reduction from 28-PowerTSSOP to 16-TFQFN?

A: The 16-TFQFN package is significantly smaller, reducing PCB footprint and enabling more compact designs. Thermal management must be evaluated during layout redesign, as the smaller package may affect heat dissipation characteristics.

Q: Are both parts RoHS compliant?

A: Yes. Both the TPS54980PWPR and TPS62871QWRXSRQ1 are ROHS3 compliant with MSL 2 (1 Year) moisture sensitivity rating.

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