TPS54626PWPR Equivalent & Substitute Parts

Part Overview

The TPS54626PWPR is an active buck switching regulator IC from Texas Instruments, designed for step-down voltage conversion applications. This positive adjustable output regulator delivers 6.5A continuous current with an input voltage range of 4.5V to 18V and adjustable output from 0.765V to 5.5V. The device operates at a fixed switching frequency of 650kHz and includes integrated synchronous rectification for improved efficiency. Housed in a 14-PowerTSSOP package, the TPS54626PWPR is part of the SWIFT™, D-CAP2™, and Eco-Mode™ series. As an active product with ROHS3 compliance and full inventory availability, equivalent and substitute parts may be required for design flexibility, supply chain optimization, or specific application requirements.

Substiute Parts

TPS54626PWPR

Texas InstrumentsIn Stock: 17121TPS54626PWPR Datasheet

Current PartRFQ

RT2856GQW

Richtek USA Inc.In Stock: 17482RT2856GQW Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TPS54626PWPR is determined by strict alignment of the following critical parameters:

• Topology & Function: Buck (step-down) switching regulator with positive adjustable output configuration
• Input Voltage Compatibility: 4.5V to 18V input range
• Output Voltage Range: Adjustable output capability spanning the required voltage window
• Output Current Capacity: Minimum 6A continuous output current
• Synchronous Rectification: Integrated synchronous rectifier for efficiency matching
• Operating Temperature Range: -40°C to 85°C
• Surface Mount Packaging: 14-pin surface mount package
• Compliance: ROHS3 compliance and active product status

The RT2856GQW from Richtek USA Inc. meets these substitution criteria as a buck switching regulator with positive adjustable output, compatible input/output voltage ranges, synchronous rectification, and matching operating temperature specifications.

Parameter Comparison

Engineering Selection Recommendations

Both the TPS54626PWPR and RT2856GQW are active products with ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements. Selection between these devices should be based on the following engineering considerations:

TPS54626PWPR is the primary choice when fixed 650kHz switching frequency is required for EMI management or when the 14-PowerTSSOP package footprint is already established in the design. The device delivers 6.5A output current and maintains output voltage adjustment from 0.765V to 5.5V.

RT2856GQW provides an alternative when design flexibility for switching frequency adjustment (200kHz to 1.6MHz) is beneficial for power efficiency optimization or when the 14-WFQFN package with exposed pad is preferred for thermal management. The device delivers 6A output current with extended output voltage range to 16.2V. The RT2856GQW has a higher moisture sensitivity level (MSL 3 vs. MSL 2), requiring consideration for storage and handling protocols.

Both devices share identical input voltage range (4.5V to 18V), operating temperature range (-40°C to 85°C), and synchronous rectification capability, ensuring functional compatibility in most buck regulator applications within these specifications.

Frequently Asked Questions (FAQ)

Q: Can the RT2856GQW directly replace the TPS54626PWPR without PCB modifications?

A: Direct replacement requires package compatibility verification. The TPS54626PWPR uses 14-PowerTSSOP packaging while the RT2856GQW uses 14-WFQFN with exposed pad. These packages have different footprints and pin configurations, necessitating PCB layout changes. Pin-to-pin functional compatibility must be verified against the respective datasheets before implementation.

Q: What are the key differences in output current capability?

A: The TPS54626PWPR delivers 6.5A continuous output current, while the RT2856GQW delivers 6A. For applications requiring the full 6.5A specification, the TPS54626PWPR is the appropriate choice. The RT2856GQW is suitable for applications with 6A or lower current requirements.

Q: How do the switching frequency specifications affect substitution?

A: The TPS54626PWPR operates at a fixed 650kHz switching frequency, while the RT2856GQW offers adjustable frequency from 200kHz to 1.6MHz. Fixed frequency designs may require the TPS54626PWPR for EMI predictability. Adjustable frequency capability in the RT2856GQW allows optimization for specific efficiency or noise requirements but requires design validation.

Q: Are there moisture sensitivity considerations for long-term storage?

A: The TPS54626PWPR has MSL 2 (1 Year), while the RT2856GQW has MSL 3 (168 Hours). The RT2856GQW requires more stringent moisture control during storage and handling. Verify storage conditions and shelf-life requirements for your supply chain before selecting the RT2856GQW.

Q: What is the significance of the extended output voltage range in the RT2856GQW?

A: The RT2856GQW supports output voltage up to 16.2V compared to the TPS54626PWPR's 5.5V maximum. This extended range does not affect substitution for applications requiring output voltages within the TPS54626PWPR specification (0.765V to 5.5V). The extended range provides additional design flexibility for other applications but is not a substitution advantage for this specific part.