TPS77028DBVT Equivalent & Substitute Parts

Part Overview

The TPS77028DBVT is a linear voltage regulator IC from Texas Instruments, classified as a positive fixed output regulator delivering 50mA at 2.8V in a SOT-23-5 surface mount package. The device is currently listed as obsolete, necessitating identification of active equivalent and substitute parts for ongoing design support and procurement.

Substiute Parts

TPS77028DBVT

Texas InstrumentsIn Stock: 2441TPS77028DBVT Datasheet

Current PartRFQ

TPS7A2401DBVR

Texas InstrumentsIn Stock: 19846TPS7A2401DBVR Datasheet

MFR RecommendedRFQ

TPS77028DBVR

Texas InstrumentsIn Stock: 6453TPS77028DBVR Datasheet

Parametric EquivalentRFQ

TPS79028DBVR

Texas InstrumentsIn Stock: 4536TPS79028DBVR Datasheet

Parametric EquivalentRFQ

TPS79028DBVT

Texas InstrumentsIn Stock: 1448TPS79028DBVT Datasheet

Parametric EquivalentRFQ

S-1200B28-M5T1U

ABLIC Inc.In Stock: 887S-1200B28-M5T1U Datasheet

MFR RecommendedRFQ

S-L2980A28MC-TF-U

ABLIC Inc.In Stock: 870S-L2980A28MC-TF-U Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TPS77028DBVT are classified into two categories based on electrical and mechanical compatibility:

Parametric Equivalents maintain identical electrical specifications: fixed 2.8V output, 50mA current rating, 10V maximum input voltage, 0.13V dropout voltage, 28 µA quiescent current, SOT-23-5 package, and -40°C to 125°C operating temperature range. These parts are direct functional replacements with no design modifications required.

Manufacturer Recommended Substitutes provide enhanced performance or increased current capacity while maintaining core compatibility parameters: positive fixed output at 2.8V, SOT-23-5 package, surface mount mounting type, and -40°C to 125°C operating temperature range. These parts accommodate higher output current demands or improved electrical characteristics.

Key parameters determining substitution eligibility:

• Output voltage: 2.8V fixed
• Package type: SOT-23-5 (SC-74A, SOT-753)
• Mounting type: Surface mount
• Output configuration: Positive fixed
• Operating temperature range: -40°C to 125°C minimum

Parameter Comparison

Engineering Selection Recommendations

Parametric Equivalents (Direct Replacements):

TPS77028DBVR and TPS79028DBVT are active parametric equivalents with identical electrical specifications to the obsolete TPS77028DBVT. Both maintain 50mA output current, 2.8V fixed output, and -40°C to 125°C operating temperature range. TPS77028DBVR is available in Tape & Reel packaging with 6400 units in stock. TPS79028DBVT is available in Tape & Reel packaging with 1429 units in stock. TPS79028DBVR offers improved PSRR performance at 85dB versus 60dB, with 4455 units in stock.

Manufacturer Recommended Substitutes:

S-1200B28-M5T1U and S-L2980A28MC-TF-U from ABLIC Inc. provide increased output current capacity at 150mA while maintaining 2.8V fixed output and SOT-23-5 package compatibility. Both devices feature significantly reduced quiescent current at 1 µA compared to 28 µA in the main part. Operating temperature range is limited to -40°C to 85°C. S-1200B28-M5T1U is available in Cut Tape packaging with 788 units in stock. S-L2980A28MC-TF-U is available in Tape & Reel packaging with 822 units in stock.

All substitute parts are ROHS3 compliant and REACH unaffected, matching the compliance profile of the main part.

Frequently Asked Questions (FAQ)

Q: Can TPS77028DBVR directly replace TPS77028DBVT?

A: Yes. TPS77028DBVR is a parametric equivalent with identical electrical specifications: 2.8V fixed output, 50mA current rating, 0.13V dropout voltage, 28 µA quiescent current, and -40°C to 125°C operating temperature. The primary difference is packaging format (Tape & Reel versus the original Tape & Reel designation). Both use SOT-23-5 package.

Q: What is the difference between TPS79028DBVR and TPS77028DBVR?

A: Both are parametric equivalents with identical output voltage, current rating, and package. TPS79028DBVR provides improved PSRR performance at 85dB (1kHz) compared to 60dB in TPS77028DBVR. Selection depends on noise performance requirements in the application.

Q: Can ABLIC S-1200B28-M5T1U be used as a direct replacement?

A: S-1200B28-M5T1U maintains 2.8V fixed output and SOT-23-5 package compatibility but increases output current to 150mA and reduces quiescent current to 1 µA. Operating temperature range is limited to -40°C to 85°C. This part is suitable for applications requiring higher current capacity within the reduced temperature range.

Q: What are the key differences between S-1200B28-M5T1U and S-L2980A28MC-TF-U?

A: Both parts provide 2.8V fixed output, 150mA current capacity, and 1 µA quiescent current in SOT-23-5 package. S-1200B28-M5T1U offers 0.23V dropout at 100mA with over-current protection. S-L2980A28MC-TF-U offers 0.2V dropout at 50mA without specified protection features. Packaging differs: S-1200B28-M5T1U is Cut Tape; S-L2980A28MC-TF-U is Tape & Reel.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts listed are ROHS3 compliant and REACH unaffected, matching the compliance status of TPS77028DBVT.

Q: What is the operating temperature limitation for ABLIC parts?

A: ABLIC S-1200B28-M5T1U and S-L2980A28MC-TF-U operate within -40°C to 85°C range, compared to -40°C to 125°C for Texas Instruments equivalents. Applications requiring operation above 85°C must use Texas Instruments parametric equivalents.