TPS72115DBVRG4 Equivalent & Substitute Parts

Part Overview

The TPS72115DBVRG4 is a linear voltage regulator IC from Texas Instruments designed for positive fixed 1.5V output at 150mA in SOT-23-5 surface mount packaging. This part is discontinued at DiGi Electronics, making equivalent and substitute parts necessary for ongoing design support and production continuity. The device provides regulated 1.5V output with integrated protection features including overcurrent, overtemperature, and reverse polarity protection, suitable for low-power applications requiring stable voltage regulation.

Substiute Parts

TPS72115DBVRG4

Texas InstrumentsIn Stock: 3983TPS72115DBVRG4 Datasheet

Current PartRFQ

TPS72115DBVR

Texas InstrumentsIn Stock: 10267TPS72115DBVR Datasheet

MFR RecommendedRFQ

TPS72115DBVT

Texas InstrumentsIn Stock: 8324TPS72115DBVT Datasheet

Parametric EquivalentRFQ

ADP121-AUJZ15R7

Analog Devices Inc.In Stock: 1781ADP121-AUJZ15R7 Datasheet

MFR RecommendedRFQ

RT9013-15GB

Richtek USA Inc.In Stock: 203189RT9013-15GB Datasheet

MFR RecommendedRFQ

S-1135A15-M5T1U

ABLIC Inc.In Stock: 1259S-1135A15-M5T1U Datasheet

MFR RecommendedRFQ

S-1135C15-M5T1U

ABLIC Inc.In Stock: 1232S-1135C15-M5T1U Datasheet

MFR RecommendedRFQ

S-1313A15-M5T1U3

ABLIC Inc.In Stock: 4059S-1313A15-M5T1U3 Datasheet

MFR RecommendedRFQ

S-1313C15-M5T1U3

ABLIC Inc.In Stock: 820S-1313C15-M5T1U3 Datasheet

MFR RecommendedRFQ

S-13R1B15-M5T1U3

ABLIC Inc.In Stock: 968S-13R1B15-M5T1U3 Datasheet

MFR RecommendedRFQ

S-13R1D15-M5T1U3

ABLIC Inc.In Stock: 10109S-13R1D15-M5T1U3 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the TPS72115DBVRG4 is determined by the following critical parameters:

• Output Voltage: Must be fixed at 1.5V
• Package Type: Must be SOT-23-5 (SC-74A, SOT-753, or TSOT-23-5 variants)
• Output Current Capability: Minimum 150mA required for direct replacement
• Input Voltage Range: Maximum 5.5V input
• Mounting Type: Surface mount only
• Output Configuration: Positive fixed output
• Control Features: Enable function required

Substitute parts are grouped into two categories:

Category 1 - Direct Equivalents (150mA Output Current): Parts with identical 150mA output current rating and matching electrical specifications. These provide pin-compatible replacement with equivalent performance.

Category 2 - Higher Current Alternatives (200mA-500mA Output Current): Parts with output current ratings exceeding 150mA. These provide enhanced current capability while maintaining 1.5V fixed output and SOT-23-5 packaging, suitable for applications requiring additional current margin.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation - Texas Instruments TPS72115DBVR or TPS72115DBVT: Both parts are active products from the original manufacturer with identical electrical specifications to the discontinued TPS72115DBVRG4. These provide direct functional replacement with the same 150mA output current, 0.24V dropout voltage, and 120 µA quiescent current. The difference between DBVR and DBVT is packaging format (Tape & Reel). Both are ROHS3 compliant and REACH unaffected.

Secondary Recommendation - ABLIC S-13R1B15-M5T1U3 or S-13R1D15-M5T1U3: These parts match the 150mA output current requirement and SOT-23-5 package. Both are active products with ROHS3 compliance. The S-13R1 series offers lower quiescent current (1 µA vs. 120 µA) and enhanced protection features including reverse current protection. Operating temperature range is -40°C to 85°C, which is narrower than the original part's -40°C to 125°C range.

Alternative for Higher Current Applications - ABLIC S-1313A15-M5T1U3 or S-1313C15-M5T1U3: These 200mA parts provide increased current capability while maintaining 1.5V output and SOT-23-5 packaging. Both are active products with ROHS3 compliance. Suitable when application requirements exceed 150mA but remain within 200mA.

Higher Current Alternative - Richtek RT9013-15GB: This 500mA part offers significantly higher current capability in SOT-23-5 packaging. Active product status and ROHS3 compliance. Operating temperature range is -40°C to 85°C. Suitable for applications requiring substantial current margin or future design scaling.

Not Recommended - ABLIC S-1135 Series (S-1135A15-M5T1U, S-1135C15-M5T1U): Both parts are obsolete. While they provide 300mA output current, their discontinued status makes them unsuitable for new designs or production continuity.

Not Recommended - Analog Devices ADP121-AUJZ15R7: While this part is active and provides 150mA output in TSOT-23-5 packaging, the TSOT variant differs from the standard SOT-23-5 package. Pinout compatibility must be verified before selection.

Frequently Asked Questions (FAQ)

Q: Can TPS72115DBVR or TPS72115DBVT be used as direct replacements for TPS72115DBVRG4?

A: Yes. Both parts are functionally identical to the discontinued TPS72115DBVRG4, with matching 1.5V output, 150mA current rating, 0.24V dropout voltage, and SOT-23-5 packaging. The primary difference is product status (active vs. discontinued) and packaging format (Tape & Reel). Pin configuration and electrical performance are equivalent.

Q: What is the difference between TPS72115DBVR and TPS72115DBVT?

A: Both parts have identical electrical specifications. The difference is packaging format: DBVR is supplied in Tape & Reel format, while DBVT is also supplied in Tape & Reel format. Both are active products suitable for production use.

Q: Can I use the ABLIC S-13R1 series parts as replacements?

A: Yes, with considerations. S-13R1B15-M5T1U3 and S-13R1D15-M5T1U3 match the 150mA output current and SOT-23-5 package. Both are active products. However, the operating temperature range is -40°C to 85°C versus the original -40°C to 125°C. If your application requires operation above 85°C, these parts are not suitable. The S-13R1 series offers lower quiescent current (1 µA) and additional reverse current protection.

Q: What is the difference between SOT-23-5 and TSOT-23-5 packaging?

A: TSOT-23-5 is a thin variant of SOT-23-5. While both are 5-pin packages with the same pinout, physical dimensions differ. TSOT-23-5 is thinner and may not be mechanically compatible with PCB layouts designed for standard SOT-23-5. Verify PCB footprint compatibility before selecting the Analog Devices ADP121-AUJZ15R7.

Q: Why do some substitute parts have higher output current ratings?

A: Parts like the RT9013-15GB (500mA) and S-1135 series (300mA) provide higher current capability while maintaining 1.5V output and SOT-23-5 packaging. These are suitable for applications requiring current margin or future design scaling. Higher current parts are backward compatible with 150mA designs but may have different dropout voltage characteristics.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed are ROHS3 compliant and REACH unaffected, matching the compliance status of the original TPS72115DBVRG4.

Q: What is the significance of quiescent current differences?

A: Quiescent current (Iq) represents the regulator's internal current consumption when supplying no load current. The original TPS72115DBVRG4 has 120 µA Iq. Substitute parts vary: ADP121-AUJZ15R7 has 21 µA, while ABLIC S-13R1 and S-1313 series have 1-1.35 µA. Lower quiescent current reduces standby power consumption, beneficial for battery-powered applications.

Q: Can I use RT9013-15GB in place of TPS72115DBVRG4?

A: Yes, with considerations. RT9013-15GB provides 500mA output versus 150mA, matching 1.5V output and SOT-23-5 packaging. However, operating temperature range is -40°C to 85°C (versus -40°C to 125°C), and dropout voltage is 0.4V @ 500mA (versus 0.24V @ 150mA). If your application operates above 85°C or requires the lower dropout voltage at full current, this part may not be suitable.

Q: Why are S-1135 series parts not recommended?

A: Both S-1135A15-M5T1U and S-1135C15-M5T1U are marked as obsolete. Using obsolete parts creates supply chain risk and may complicate future production. Active alternatives with equivalent or superior specifications are available.