TPS54560DDA Equivalent & Substitute Parts

Part Overview

The TPS54560DDA is a buck, split rail switching regulator IC from Texas Instruments designed for positive adjustable output applications. It delivers 5A output current with an adjustable output voltage range from 0.8V to 58.8V, supporting input voltages from 4.5V to 60V. The device operates across -40°C to 150°C junction temperature and features the Eco-Mode™ series optimization.

The TPS54560DDA carries a "Not For New Designs" product status, indicating it has been superseded. Identifying equivalent substitute parts is necessary for ongoing production support, maintenance applications, and legacy system repairs where this regulator remains in use.

Substiute Parts

TPS54560DDA

Texas InstrumentsIn Stock: 2295TPS54560DDA Datasheet

Current PartRFQ

TPS54560BDDA

Texas InstrumentsIn Stock: 3451TPS54560BDDA Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TPS54560DDA is determined by strict equivalence across the following critical parameters:

• Topology & Function: Buck, split rail topology with step-down operation
• Output Characteristics: Positive, adjustable output from 0.8V to 58.8V
• Electrical Ratings: 5A output current, 4.5V to 60V input voltage range
• Package & Form Factor: 8-PowerSOIC (0.154", 3.90mm Width) surface mount
• Temperature Range: -40°C to 150°C junction temperature operation
• Compliance: ROHS3 compliant, MSL 2 rating

The TPS54560BDDA meets all substitution criteria as a direct equivalent from the same manufacturer, maintaining identical electrical specifications, package form factor, and compliance certifications. The primary distinction is product status and switching frequency specification.

Parameter Comparison

Engineering Selection Recommendations

The TPS54560BDDA is a direct functional equivalent to the TPS54560DDA. Both devices share identical electrical specifications, package form factor, and compliance certifications (ROHS3, MSL 2). The TPS54560BDDA carries Active product status, whereas the TPS54560DDA is designated Not For New Designs, making the BDDA variant the preferred selection for ongoing production and new applications.

The switching frequency specification differs between the two parts: the DDA supports a range of 100kHz to 2.5MHz, while the BDDA operates at a fixed 500kHz. This fixed frequency in the BDDA falls within the operational range of the DDA and does not compromise functional equivalence for standard buck regulator applications.

Both parts maintain identical thermal performance (-40°C to 150°C), input/output voltage ratings, and current delivery capability (5A). Pin-for-pin compatibility and package dimensions are preserved, enabling direct substitution in existing PCB layouts.

Frequently Asked Questions (FAQ)

Q: Can the TPS54560BDDA directly replace the TPS54560DDA on existing PCBs?

A: Yes. Both devices use the 8-PowerSOIC package with identical pin assignments, dimensions (0.154" × 3.90mm width), and electrical specifications. Direct PCB substitution is supported without layout modifications.

Q: What is the significance of the different switching frequency specifications?

A: The TPS54560DDA specifies a frequency range of 100kHz to 2.5MHz, while the TPS54560BDDA operates at a fixed 500kHz. The fixed frequency of the BDDA falls within the DDA's operational range and maintains equivalent regulator performance for standard applications. Applications requiring specific frequency tuning should reference the detailed datasheet for each variant.

Q: Why is the TPS54560DDA marked "Not For New Designs"?

A: This designation indicates the part has been superseded in the manufacturer's product line. The TPS54560BDDA, with Active status, represents the current production equivalent and is recommended for all new designs and ongoing production support.

Q: Are there any compliance or certification differences between these parts?

A: No. Both the TPS54560DDA and TPS54560BDDA maintain identical ROHS3 compliance and MSL 2 (1 Year) moisture sensitivity ratings, ensuring equivalent reliability and environmental compliance.

Q: What is the thermal operating range for both devices?

A: Both the TPS54560DDA and TPS54560BDDA operate across a junction temperature range of -40°C to 150°C, supporting equivalent thermal performance in industrial and commercial applications.