TPS73115DBVT Linear Voltage Regulator IC Equivalent & Substitute Parts

Part Overview

The TPS73115DBVT is a linear voltage regulator IC from Texas Instruments designed for positive fixed 1.5V output at 150mA in a SOT-23-5 surface mount package. This part is currently 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

TPS73115DBVT

Texas InstrumentsIn Stock: 10543TPS73115DBVT Datasheet

Current PartRFQ

TPS70615DBVR

Texas InstrumentsIn Stock: 2021TPS70615DBVR Datasheet

MFR RecommendedRFQ

TPS73115DBVR

Texas InstrumentsIn Stock: 7020TPS73115DBVR Datasheet

Parametric EquivalentRFQ

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 TPS73115DBVT is determined by the following critical parameters:

• Output voltage fixed at 1.5V
• Output current capability of 150mA or greater
• Input voltage maximum of 5.5V or greater
• SOT-23-5 package compatibility
• Surface mount mounting type
• Operating temperature range of -40°C to 125°C
• ROHS3 compliance and REACH unaffected status

Substitute parts are grouped into two categories: parametric equivalents (matching all electrical specifications) and manufacturer-recommended alternatives (meeting functional requirements with enhanced or modified specifications).

Parameter Comparison

Engineering Selection Recommendations

TPS73115DBVR is the primary parametric equivalent, offering identical electrical specifications and performance characteristics to the obsolete TPS73115DBVT. This part maintains the same 0.1V dropout voltage, quiescent current, and PSRR performance while being in active production status with ROHS3 compliance and unlimited moisture sensitivity rating.

TPS70615DBVR serves as a manufacturer-recommended alternative from Texas Instruments with enhanced specifications. It provides higher maximum input voltage (6.5V versus 5.5V), significantly lower quiescent current (2.55 µA versus 550 µA), and improved PSRR performance (80dB ~ 52dB). This option is suitable for applications where lower standby power consumption is beneficial.

MIC5305-1.5YD5-TR from Microchip Technology is a functional equivalent with superior quiescent current performance (150 µA) and PSRR characteristics (85dB ~ 65dB). The package variant is TSOT-23-5 (thin SOT-23-5), which maintains pin compatibility with standard SOT-23-5 footprints. This part is active and ROHS3 compliant with unlimited moisture sensitivity.

RT9193-15GB from Richtek USA Inc. provides higher output current capability (300mA versus 150mA) while maintaining 1.5V output and SOT-23-5 package compatibility. This option is suitable for applications requiring increased current headroom. The part carries MSL-3 moisture sensitivity rating (168 hours) and is in active production.

All substitute parts maintain ROHS3 compliance, REACH unaffected status, and the required operating temperature range of -40°C to 125°C.

Frequently Asked Questions (FAQ)

Q: Can TPS73115DBVR be used as a direct replacement for TPS73115DBVT?

A: Yes. TPS73115DBVR is a parametric equivalent with identical electrical specifications, including 1.5V output, 150mA current, 0.1V dropout voltage, and SOT-23-5 package. The primary difference is product status: TPS73115DBVR is active while TPS73115DBVT is obsolete.

Q: What is the difference between TPS70615DBVR and TPS73115DBVR?

A: Both are Texas Instruments 1.5V, 150mA regulators in SOT-23-5 packages. TPS70615DBVR offers lower quiescent current (2.55 µA versus 550 µA), higher maximum input voltage (6.5V versus 5.5V), and improved PSRR. TPS73115DBVR maintains the original dropout voltage specification of 0.1V @ 150mA.

Q: Is MIC5305-1.5YD5-TR package compatible with SOT-23-5 footprints?

A: Yes. MIC5305-1.5YD5-TR uses TSOT-23-5 (thin SOT-23-5) packaging, which maintains pin-to-pin compatibility with standard SOT-23-5 footprints. The thin variant has reduced height but identical lead positions.

Q: When should RT9193-15GB be selected over other substitutes?

A: RT9193-15GB is appropriate when the application requires output current greater than 150mA. It provides 300mA capability while maintaining 1.5V output and SOT-23-5 package compatibility. Note the MSL-3 moisture sensitivity rating requires appropriate handling during assembly.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts (TPS73115DBVR, TPS70615DBVR, MIC5305-1.5YD5-TR, and RT9193-15GB) are ROHS3 compliant and REACH unaffected, meeting environmental regulatory requirements.

Q: What is the significance of quiescent current differences among substitutes?

A: Quiescent current determines standby power consumption. TPS70615DBVR (2.55 µA) and MIC5305-1.5YD5-TR (150 µA) offer significantly lower standby power than TPS73115DBVR (550 µA), making them preferable for battery-powered or always-on applications where idle current matters.