TPS73028DBVRG4 Equivalent & Substitute Parts

Part Overview

The TPS73028DBVRG4 is a linear voltage regulator IC from Texas Instruments designed for positive fixed output applications. It delivers 200mA output current at a fixed 2.8V output voltage in a compact SOT-23-5 surface mount package. The device is classified as Last Time Buy, indicating end-of-life status. Alternative equivalent and substitute parts are necessary to ensure design continuity and long-term supply chain reliability for new production runs and future applications.

Substiute Parts

TPS73028DBVRG4

Texas InstrumentsIn Stock: 5235TPS73028DBVRG4 Datasheet

Current PartRFQ

TLV74328PDBVR

Texas InstrumentsIn Stock: 12043TLV74328PDBVR Datasheet

MFR RecommendedRFQ

TPS73028DBVR

Texas InstrumentsIn Stock: 14307TPS73028DBVR Datasheet

Parametric EquivalentRFQ

TPS73028DBVT

Texas InstrumentsIn Stock: 36203TPS73028DBVT Datasheet

Parametric EquivalentRFQ

TPS79328QDBVRQ1

Texas InstrumentsIn Stock: 325042TPS79328QDBVRQ1 Datasheet

Parametric EquivalentRFQ

MIC5323-2.8YD5-TR

Microchip TechnologyIn Stock: 757MIC5323-2.8YD5-TR Datasheet

MFR RecommendedRFQ

RT9193-28GB

Richtek USA Inc.In Stock: 105450RT9193-28GB Datasheet

MFR RecommendedRFQ

RT9193-28GJ5

Richtek USA Inc.In Stock: 816RT9193-28GJ5 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TPS73028DBVRG4 is determined by the following critical parameters:

Mandatory Matching Parameters:

• Output voltage: 2.8V fixed
• Package type: SOT-23-5 surface mount
• Output configuration: Positive
• Input voltage maximum: 5.5V
• Operating temperature range: -40°C to 125°C
• Control features: Enable function
• RoHS compliance: ROHS3 Compliant

Flexible Parameters (allowing substitution with higher ratings):

• Output current: 200mA minimum (higher current ratings acceptable)
• Dropout voltage: 0.21V maximum at rated current
• Quiescent current: 250 µA maximum
• Protection features: Over current, over temperature, reverse polarity, UVLO

Substitute parts are grouped into two categories: parametric equivalents (identical electrical specifications) and manufacturer-recommended alternatives (enhanced performance characteristics with compatible pinout and package).

Parameter Comparison

Engineering Selection Recommendations

Parametric Equivalents (Direct Replacement): TPS73028DBVR and TPS73028DBVT are parametric equivalents of the TPS73028DBVRG4, offering identical electrical specifications and packaging. Both remain Last Time Buy status. These parts are suitable for direct substitution in existing designs without circuit modification.

Active Product with Enhanced Performance: TPS79328QDBVRQ1 is an active product from Texas Instruments with AEC-Q100 automotive qualification. It provides superior performance with lower dropout voltage (0.2V vs 0.21V) and reduced quiescent current (220 µA vs 250 µA). This part is recommended for new designs requiring long-term supply assurance and automotive-grade reliability.

Higher Current Capacity Alternatives: TLV74328PDBVR, MIC5323-2.8YD5-TR, RT9193-28GB, and RT9193-28GJ5 offer 300mA output current capability, exceeding the 200mA specification of the original part. These are suitable for applications requiring additional current margin or future design scaling. All are active products with established supply chains.

Package Considerations: Standard SOT-23-5 packages (TPS73028DBVR, TPS73028DBVT, TPS79328QDBVRQ1, TLV74328PDBVR, RT9193-28GB) are interchangeable. Thin SOT-23-5 (TSOT-23-5) variants (MIC5323-2.8YD5-TR, RT9193-28GJ5) require PCB layout verification for height clearance but maintain electrical compatibility.

Compliance Status: All substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the original part's regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can TPS73028DBVR be used as a direct replacement for TPS73028DBVRG4? A: Yes. TPS73028DBVR is a parametric equivalent with identical electrical specifications, output voltage, current rating, dropout voltage, and package type. No circuit modifications are required.

Q: What is the difference between TPS73028DBVT and TPS73028DBVR? A: Both are parametric equivalents with identical electrical performance. The difference is in packaging format: DBVT uses Tape & Reel packaging, while DBVR also uses Tape & Reel. Both are Last Time Buy status.

Q: Why should I consider TPS79328QDBVRQ1 instead of TPS73028DBVR? A: TPS79328QDBVRQ1 is an active product with AEC-Q100 automotive qualification, ensuring long-term availability. It provides lower dropout voltage (0.2V) and reduced quiescent current (220 µA), improving efficiency. It is the recommended choice for new designs.

Q: Can I use a 300mA part like TLV74328PDBVR in place of the 200mA TPS73028DBVRG4? A: Yes. Higher current-rated parts are compatible substitutes. The 300mA output capability provides additional design margin and is electrically compatible with 200mA applications. Verify that the slightly higher dropout voltage (0.29V vs 0.21V) does not impact your circuit's minimum input voltage requirement.

Q: What is the difference between SOT-23-5 and TSOT-23-5 packages? A: TSOT-23-5 is a thin variant of SOT-23-5 with reduced height. Both are electrically identical and pin-compatible. TSOT-23-5 requires verification of PCB clearance for components mounted above or below the regulator.

Q: Are all substitute parts RoHS compliant? A: Yes. All listed substitute parts maintain ROHS3 compliance, matching the original TPS73028DBVRG4 specification.

Q: Which substitute part has the best quiescent current performance? A: TLV74328PDBVR offers the lowest quiescent current at 60 µA, compared to 250 µA for the original part. This is beneficial for battery-powered or low-power standby applications.

Q: Can I mix different substitute parts in the same production run? A: Yes, provided all parts meet your circuit's electrical requirements. However, for manufacturing consistency and supply chain management, selecting a single active product (such as TPS79328QDBVRQ1) is recommended.