TPS62827DMQR Equivalent & Substitute Parts

Part Overview

The TPS62827DMQR is an active, production-status buck switching regulator IC manufactured by Texas Instruments. This positive adjustable step-down converter delivers 4A output current with an input voltage range of 2.5V to 5.5V and adjustable output from 0.6V to 4V. The device operates at 2.2MHz switching frequency with integrated synchronous rectification, housed in a 6-VFDFN surface mount package.

Substitute parts become necessary when the primary part experiences supply constraints, extended lead times, or when design requirements permit alternative package configurations or electrical specifications within acceptable operating parameters.

Substiute Parts

TPS62827DMQR

Texas InstrumentsIn Stock: 35143TPS62827DMQR Datasheet

Current PartRFQ

RT5788AGJ8F

Richtek USA Inc.In Stock: 6146RT5788AGJ8F Datasheet

SimilarRFQ

RT8070ZQW

Richtek USA Inc.In Stock: 52364RT8070ZQW Datasheet

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RT8078AGQW

Richtek USA Inc.In Stock: 20165RT8078AGQW Datasheet

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RT8086BGQUF

Richtek USA Inc.In Stock: 56273RT8086BGQUF Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following core electrical and mechanical parameters:

Primary Substitution Criteria:

• Step-down buck topology with positive adjustable output
• Output current rating of 4A or greater
• Input voltage range compatibility (minimum 2.5V, maximum 5.5V overlap)
• Adjustable output voltage minimum of 0.6V or lower
• Synchronous rectification capability
• Surface mount technology
• Active product status with ROHS3 compliance

Secondary Considerations:

• Package type differences (6-VFDFN, 8-WDFN, 10-WDFN, SOT-23-8, 12-UQFN)
• Operating temperature range variations
• Switching frequency differences
• Moisture sensitivity level classifications

The four substitute parts listed meet the primary electrical criteria but vary in package configuration, thermal specifications, and moisture sensitivity ratings.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts maintain active product status and ROHS3 compliance, meeting baseline regulatory requirements for new designs and production environments.

RT8078AGQW provides the closest electrical alignment to the TPS62827DMQR with matching 0.6V minimum output voltage and 4A current rating. The 10-WFDFN package offers increased thermal dissipation compared to the 6-VFDFN original. Operating temperature is limited to 85°C (TA) versus 125°C (TJ) on the original part.

RT8070ZQW operates with a 0.8V minimum output voltage and programmable switching frequency range (200kHz to 2MHz), providing design flexibility. The 8-WDFN package represents a mid-range footprint option. Output voltage maximum of 5V accommodates most standard rail applications.

RT8086BGQUF delivers 4.6A output current, 0.5A below the original specification. The 12-UQFN package is the smallest footprint option. Output voltage is capped at 3.3V, limiting this part to lower voltage rail applications.

RT5788AGJ8F maintains 4A output current and extends input voltage tolerance to 6V maximum. The SOT-23-8 package is the largest footprint among substitutes. Output voltage range extends to 6V, supporting higher rail voltages. Operating temperature is limited to 85°C (TA).

Frequently Asked Questions (FAQ)

Q: Can RT8086BGQUF replace TPS62827DMQR in all applications?

A: No. RT8086BGQUF delivers 4.6A maximum output current versus 4A on the original part, and output voltage is limited to 3.3V. Use only in applications requiring 3.3V or lower output rails with current demands not exceeding 4.6A.

Q: What is the primary difference between the TPS62827DMQR and RT8078AGQW?

A: Both parts share identical electrical specifications (0.6V to 5.5V output range, 4A current). The RT8078AGQW uses a larger 10-WFDFN package for improved thermal performance but operates at a lower maximum junction temperature (85°C TA versus 125°C TJ).

Q: Why does the TPS62827DMQR have MSL 1 rating while substitutes have MSL 3?

A: MSL 1 indicates unlimited shelf life without moisture baking requirements. MSL 3 parts require moisture baking after 168 hours of exposure to ambient humidity. This affects storage and handling procedures but does not impact electrical performance in sealed applications.

Q: Is the RT8070ZQW suitable for fixed-frequency applications?

A: The RT8070ZQW supports programmable switching frequency from 200kHz to 2MHz. While it can operate at fixed frequencies within this range, applications requiring a specific fixed frequency should confirm compatibility with the device's frequency control architecture.

Q: Can RT5788AGJ8F operate at input voltages above 5.5V?

A: Yes. RT5788AGJ8F accepts input voltages up to 6V, extending the upper input limit by 0.5V compared to the original TPS62827DMQR. This provides additional design margin for applications with variable input supplies.

Q: What package considerations apply when substituting the 6-VFDFN with larger alternatives?

A: Larger packages (8-WDFN, 10-WFDFN, 12-UQFN, SOT-23-8) require PCB layout modifications. Pin assignments must be verified against the original design. Thermal performance may improve with larger packages due to increased copper pad area, but board space availability may be constrained.