TPS73215DBVR Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The TPS73215DBVR is a linear voltage regulator IC from Texas Instruments designed for positive fixed 1.5V output at 250mA in SOT-23-5 surface mount packaging. This part is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. The device provides regulated power with integrated protection features including over-current, over-temperature, short-circuit, and reverse-polarity protection, suitable for low-power applications requiring stable 1.5V rails.

Substiute Parts

TPS73215DBVR

Texas InstrumentsIn Stock: 6957TPS73215DBVR Datasheet

Current PartRFQ

TPS7A2015PDBVR

Texas InstrumentsIn Stock: 3405TPS7A2015PDBVR Datasheet

MFR RecommendedRFQ

TPS73215DBVT

Texas InstrumentsIn Stock: 4190TPS73215DBVT Datasheet

Parametric EquivalentRFQ

AP2139AK-1.5TRG1

Diodes IncorporatedIn Stock: 9953AP2139AK-1.5TRG1 Datasheet

MFR RecommendedRFQ

MIC5305-1.5YD5-TR

Microchip TechnologyIn Stock: 836MIC5305-1.5YD5-TR Datasheet

MFR RecommendedRFQ

RT9193-15GB

Richtek USA Inc.In Stock: 103462RT9193-15GB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the TPS73215DBVR is determined by the following critical parameters:

Primary Substitution Criteria:

• Output voltage: 1.5V fixed
• Output current capability: minimum 250mA
• Input voltage maximum: 5.5V or higher
• Package: SOT-23-5 (SC-74A, SOT-753)
• Surface mount configuration
• Operating temperature range: -40°C to 125°C minimum

Substitution Categories:

Parametric Equivalent: Parts with identical electrical specifications and packaging. TPS73215DBVT meets all primary criteria with identical output current (250mA), dropout voltage (0.15V @ 250mA), and protection features. Difference is packaging format (Tape & Reel vs. Cut Tape).

Manufacturer Recommended (Active Status): Parts from alternative manufacturers meeting or exceeding primary specifications. These include TPS7A2015PDBVR (Texas Instruments, 300mA output, active status), AP2139AK-1.5TRG1 (Diodes Incorporated, 250mA output), RT9193-15GB (Richtek, 300mA output), and MIC5305-1.5YD5-TR (Microchip, 150mA output). These parts maintain 1.5V output and SOT-23-5 packaging while offering active product status and improved specifications in certain parameters.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications): TPS73215DBVT is the parametric equivalent, maintaining identical electrical performance and protection features. Both parts are obsolete Texas Instruments devices with ROHS3 compliance. Selection between TPS73215DBVR and TPS73215DBVT depends on packaging format requirements: Cut Tape (CT) & Digi-Reel for DBVR versus Tape & Reel (TR) for DBVT.

For Active Product Status with Enhanced Performance: TPS7A2015PDBVR (Texas Instruments, active status) provides 300mA output current versus 250mA, improved quiescent current (15 µA vs. 550 µA), and higher input voltage rating (6V vs. 5.5V). This part is suitable for new designs requiring long-term supply availability and lower standby power consumption.

For Alternative Manufacturer Solutions: RT9193-15GB (Richtek, active status) offers 300mA output current with 70dB PSRR performance and ROHS3 compliance. AP2139AK-1.5TRG1 (Diodes Incorporated, active status) maintains 250mA output with ultra-low quiescent current (1.5 µA) but operates to 85°C maximum temperature and exhibits higher dropout voltage (1.3V @ 250mA).

For Current-Limited Applications: MIC5305-1.5YD5-TR (Microchip, active status) provides 150mA output current with superior PSRR (85dB ~ 65dB) and low quiescent current (150 µA). This part is suitable only for applications requiring less than 150mA output current.

Compliance Considerations: All substitute parts maintain ROHS3 compliance and EAR99 export classification. Moisture sensitivity levels vary: TPS73215DBVR and TPS73215DBVT are MSL 1 (unlimited), while AP2139AK-1.5TRG1 and RT9193-15GB are MSL 3 (168 hours).

Frequently Asked Questions (FAQ)

Q: Can TPS7A2015PDBVR replace TPS73215DBVR in existing designs? A: Yes, with design verification. Both provide 1.5V output in SOT-23-5 packaging with -40°C to 125°C operation. TPS7A2015PDBVR offers higher output current (300mA vs. 250mA), lower quiescent current (15 µA vs. 550 µA), and active product status. Verify that the higher input voltage rating (6V vs. 5.5V) and different dropout voltage characteristics are compatible with your power supply topology.

Q: Why does MIC5305-1.5YD5-TR have lower output current? A: MIC5305-1.5YD5-TR is rated for 150mA maximum output current, which is below the TPS73215DBVR specification of 250mA. This part is suitable only for applications requiring 150mA or less. Do not use this part if your design requires 250mA output current.

Q: What is the difference between SOT-23-5 and TSOT-23-5 packaging? A: TSOT-23-5 (thin SOT-23-5) used by MIC5305-1.5YD5-TR has reduced height compared to standard SOT-23-5. Both packages are mechanically and electrically compatible for PCB assembly, but verify PCB footprint and component height clearance requirements for your application.

Q: Is AP2139AK-1.5TRG1 suitable for high-temperature applications? A: AP2139AK-1.5TRG1 operates to 85°C maximum junction temperature, which is lower than the TPS73215DBVR specification of 125°C. This part is not suitable for applications requiring full -40°C to 125°C operation. Use this part only for applications with maximum operating temperature of 85°C or lower.

Q: What is the impact of higher dropout voltage in AP2139AK-1.5TRG1? A: AP2139AK-1.5TRG1 exhibits 1.3V dropout voltage at 250mA, significantly higher than TPS73215DBVR (0.15V @ 250mA). This requires higher input voltage headroom and results in greater power dissipation. Verify that your input voltage supply can accommodate this higher dropout voltage requirement.

Q: Can I use RT9193-15GB as a direct substitute? A: RT9193-15GB is a functional substitute with 300mA output current, matching or exceeding TPS73215DBVR specifications. Both operate -40°C to 125°C with SOT-23-5 packaging and ROHS3 compliance. Verify MSL requirements: RT9193-15GB is MSL 3 (168 hours) versus TPS73215DBVR MSL 1 (unlimited).

Q: Why is TPS73215DBVT listed as a substitute if it is also obsolete? A: TPS73215DBVT is a parametric equivalent with identical electrical specifications and protection features. It serves as an alternative source for the same functionality during the obsolescence transition period. The only difference is packaging format (Tape & Reel vs. Cut Tape). For new designs, use active-status alternatives such as TPS7A2015PDBVR.