TPS77050DBVT Equivalent & Substitute Parts

Part Overview

The TPS77050DBVT is a linear voltage regulator IC from Texas Instruments designed for positive fixed 5V output at 50mA in SOT-23-5 surface mount packaging. This 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 applications requiring 5V linear regulation in compact form factors.

Substiute Parts

TPS77050DBVT

Texas InstrumentsIn Stock: 6506TPS77050DBVT Datasheet

Current PartRFQ

TPS77050DBVR

Texas InstrumentsIn Stock: 2494TPS77050DBVR Datasheet

Parametric EquivalentRFQ

S-1200B50-M5T1U

ABLIC Inc.In Stock: 5277S-1200B50-M5T1U Datasheet

MFR RecommendedRFQ

S-814A50AMC-BDOT2U

ABLIC Inc.In Stock: 796S-814A50AMC-BDOT2U Datasheet

MFR RecommendedRFQ

S-L2980A50MC-TF-U

ABLIC Inc.In Stock: 4414S-L2980A50MC-TF-U Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following critical parameters: output voltage (5V fixed), package type (SOT-23-5), input voltage rating (10V maximum), and mounting type (surface mount). Parts are grouped into two categories based on output current capability and product status.

Parametric Equivalent (Direct Replacement): TPS77050DBVR maintains identical electrical specifications and packaging, differing only in tape format (Digi-Reel® vs. Cut Tape) and product status (Active vs. Last Time Buy).

Functional Equivalents (Higher Current Capability): S-1200B50-M5T1U, S-814A50AMC-BDOT2U, and S-L2980A50MC-TF-U provide 5V output in SOT-23-5 packaging with enhanced current ratings (150mA or 180mA) and active product status. These parts are suitable for applications where the 50mA specification is a design margin and higher current capacity is beneficial.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement: TPS77050DBVR is the primary equivalent, maintaining identical electrical performance and temperature range while offering active product status. This part is suitable for immediate substitution in existing designs.

For New Designs or Supply Continuity: S-L2980A50MC-TF-U is recommended as the preferred long-term alternative. It provides superior quiescent current performance (1 µA vs. 28 µA), equivalent PSRR rating (65dB), and active product status with established supply availability. The higher current rating (150mA) provides design margin without requiring circuit modifications.

For Applications Requiring Extended Temperature Range: TPS77050DBVR maintains the -40°C ~ 125°C operating range of the original part. ABLIC alternatives operate to 85°C maximum and are suitable only for applications within this narrower range.

For Cost-Optimized Designs: S-814A50AMC-BDOT2U offers the highest current capacity (180mA) and lowest quiescent current (500 nA), though with reduced PSRR (45dB @ 100Hz) and narrower temperature range (-40°C ~ 85°C).

All substitute parts maintain SOT-23-5 packaging, 5V fixed output, 10V maximum input voltage, and RoHS3 compliance, ensuring PCB layout compatibility and regulatory alignment.

Frequently Asked Questions (FAQ)

Q: Can TPS77050DBVR be used as a direct replacement for TPS77050DBVT?

A: Yes. TPS77050DBVR is electrically and functionally identical, with matching output voltage (5V), current rating (50mA), dropout voltage (0.09V @ 50mA), quiescent current (28 µA), and operating temperature range (-40°C ~ 125°C). The only differences are packaging format (Digi-Reel® availability) and product status (Active vs. Last Time Buy). No circuit modifications are required.

Q: What are the key differences between the Texas Instruments and ABLIC alternatives?

A: Texas Instruments parts (TPS77050DBVT/DBVR) maintain a 125°C maximum operating temperature, while ABLIC parts are rated to 85°C maximum. ABLIC alternatives feature significantly lower quiescent currents (1 µA to 500 nA vs. 28 µA), beneficial for battery-powered applications. ABLIC parts offer higher current ratings (150mA or 180mA) compared to the 50mA specification of the original part.

Q: Are the ABLIC substitutes compatible with existing PCB layouts?

A: Yes. All substitute parts use identical SOT-23-5 (SC-74A) packaging with the same pinout and footprint. Direct PCB substitution is possible without layout modifications. Verify pin assignments in device datasheets to confirm compatibility with your specific application.

Q: Which substitute is best for battery-powered applications?

A: S-814A50AMC-BDOT2U offers the lowest quiescent current (500 nA), minimizing standby power consumption. S-1200B50-M5T1U and S-L2980A50MC-TF-U provide 1 µA quiescent current, also suitable for low-power designs. These represent significant improvements over the original 28 µA specification.

Q: Can I use a higher-current substitute (150mA or 180mA) in place of the 50mA part?

A: Yes. Higher current-rated parts are backward compatible for applications requiring 50mA or less. The increased current capacity provides design margin and does not negatively impact circuit performance. Verify that thermal management and PCB layout remain adequate for your application.

Q: What is the impact of different PSRR ratings on circuit performance?

A: PSRR (Power Supply Rejection Ratio) indicates noise rejection capability. The original part and most substitutes provide 60-65dB at 1kHz, suitable for general-purpose regulation. S-814A50AMC-BDOT2U provides 45dB at 100Hz, lower noise rejection but still adequate for many applications. Select based on your specific noise immunity requirements.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All listed parts maintain RoHS3 compliance and MSL rating 1 (Unlimited moisture sensitivity level), ensuring regulatory alignment and handling compatibility with existing supply chain processes.