TPS73131DBVT Linear Voltage Regulator IC Equivalent & Substitute Parts

Part Overview

The TPS73131DBVT is a linear voltage regulator IC manufactured by Texas Instruments, delivering a fixed positive output of 3.1V at 150mA in a SOT-23-5 surface mount package. This device is classified as Last Time Buy, indicating end-of-life status. The regulator integrates protection features including over-current, over-temperature, short-circuit, and reverse-polarity protection, with an enable control feature for flexible power management applications.

Finding equivalent and substitute parts is necessary due to the Last Time Buy status of the TPS73131DBVT. Alternative components with compatible electrical and mechanical specifications ensure design continuity and supply chain reliability.

Substiute Parts

TPS73131DBVT

Texas InstrumentsIn Stock: 1914TPS73131DBVT Datasheet

Current PartRFQ

TPS7A2031PDBVR

Texas InstrumentsIn Stock: 2686TPS7A2031PDBVR Datasheet

MFR RecommendedRFQ

TPS73131DBVR

Texas InstrumentsIn Stock: 2392TPS73131DBVR Datasheet

Parametric EquivalentRFQ

MIC5265-3.1YD5-TR

Microchip TechnologyIn Stock: 3678MIC5265-3.1YD5-TR Datasheet

MFR RecommendedRFQ

RT9020-31GB

Richtek USA Inc.In Stock: 1158RT9020-31GB Datasheet

MFR RecommendedRFQ

RT9193-31GB

Richtek USA Inc.In Stock: 17901RT9193-31GB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TPS73131DBVT are grouped based on the following critical parameters that determine functional compatibility:

Primary Substitution Criteria:

• Fixed output voltage of 3.1V
• SOT-23-5 package compatibility (mechanical and electrical pin alignment)
• Operating temperature range of -40°C to 125°C
• Surface mount mounting type
• ROHS3 compliance or equivalent environmental certification

Secondary Compatibility Factors:

• Output current capability (150mA minimum for direct replacement; higher ratings acceptable for derating applications)
• Dropout voltage performance
• Quiescent current characteristics
• Protection feature set (over-current, over-temperature minimum requirements)

Parts are classified as either parametric equivalents (matching all primary specifications) or functional alternatives (meeting core requirements with enhanced or modified secondary characteristics).

Parameter Comparison

Engineering Selection Recommendations

Parametric Equivalent (Direct Replacement): TPS73131DBVR is the parametric equivalent of TPS73131DBVT, differing only in packaging format (Tape & Reel versus Cut Tape). Both devices share identical electrical specifications and Last Time Buy status. Selection between these two depends on procurement and assembly requirements.

Active Product Alternatives:

TPS7A2031PDBVR (Texas Instruments, Active) provides enhanced performance with doubled output current capability (300mA), improved quiescent current (15 µA), and higher input voltage rating (6V). This part is suitable for applications requiring higher current delivery or lower power consumption. Product status is Active, ensuring long-term availability.

MIC5265-3.1YD5-TR (Microchip Technology, Active) maintains the 150mA output current specification with ultra-low quiescent current (2 µA), beneficial for battery-powered applications. The TSOT-23-5 package is mechanically compatible with SOT-23-5 footprints. Product status is Active.

RT9193-31GB (Richtek USA Inc., Active) offers 300mA output current with improved dropout voltage (0.3V @ 300mA) and full -40°C to 125°C operating range. Product status is Active with established supply availability.

RT9020-31GB (Richtek USA Inc., Active) provides the highest output current (500mA) among alternatives, suitable for applications requiring significant current headroom. Operating temperature range is limited to -40°C to 85°C. Product status is Active.

All recommended alternatives maintain ROHS3 compliance or equivalent environmental certification status.

Frequently Asked Questions (FAQ)

Q: Can TPS73131DBVR be used as a direct replacement for TPS73131DBVT? A: Yes. TPS73131DBVR is a parametric equivalent with identical electrical specifications. The difference is packaging format: TPS73131DBVT is supplied in Tape & Reel, while TPS73131DBVR is supplied in Tape & Reel as well. Both are Last Time Buy status parts.

Q: What is the key difference between TPS7A2031PDBVR and TPS73131DBVT? A: TPS7A2031PDBVR doubles the output current capability to 300mA and significantly reduces quiescent current to 15 µA. Input voltage rating increases to 6V. The part is Active status, ensuring continued availability. Pin-compatible in SOT-23-5 package.

Q: Is MIC5265-3.1YD5-TR mechanically compatible with the TPS73131DBVT footprint? A: Yes. MIC5265-3.1YD5-TR uses TSOT-23-5 packaging, which is mechanically and electrically compatible with SOT-23-5 footprints. Pin assignments align for direct board-level substitution.

Q: Which substitute part has the lowest power consumption? A: MIC5265-3.1YD5-TR features the lowest quiescent current at 2 µA, making it optimal for low-power and battery-powered applications where standby current is critical.

Q: Can RT9020-31GB be used in applications designed for 150mA output? A: Yes. RT9020-31GB provides 500mA output current, which exceeds the 150mA requirement. The device operates at lower stress levels in such applications. However, the operating temperature range is limited to -40°C to 85°C, which may not suit applications requiring the full -40°C to 125°C range.

Q: Are all substitute parts RoHS compliant? A: Yes. All listed substitute parts maintain ROHS3 compliance or equivalent environmental certification status, ensuring regulatory compatibility with the original TPS73131DBVT.

Q: What is the significance of "Last Time Buy" status for TPS73131DBVT? A: Last Time Buy indicates the manufacturer has discontinued or will discontinue production. Existing inventory is available for final purchases, but long-term supply is not guaranteed. Active status alternatives ensure sustained availability for future production needs.