TPS77033DBVT Equivalent & Substitute Parts

Part Overview

The TPS77033DBVT is a linear voltage regulator IC from Texas Instruments, delivering a fixed 3.3V output at 50mA in a SOT-23-5 surface mount package. This device features integrated protection against overcurrent, overtemperature, and reverse polarity conditions, with an enable control feature for power management applications.

The TPS77033DBVT carries a Last Time Buy product status, indicating end-of-life designation. Identifying equivalent and substitute parts is necessary to ensure design continuity and maintain supply chain reliability for new production runs and long-term support.

Substiute Parts

TPS77033DBVT

Texas InstrumentsIn Stock: 2180TPS77033DBVT Datasheet

Current PartRFQ

TPS76933DBVR

Texas InstrumentsIn Stock: 55306TPS76933DBVR Datasheet

MFR RecommendedRFQ

TPS77033DBVR

Texas InstrumentsIn Stock: 6510TPS77033DBVR Datasheet

Parametric EquivalentRFQ

S-1200B33-M5T1U

ABLIC Inc.In Stock: 889114S-1200B33-M5T1U Datasheet

MFR RecommendedRFQ

S-L2980A33MC-TF-U

ABLIC Inc.In Stock: 5814S-L2980A33MC-TF-U Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TPS77033DBVT is determined by the following critical parameters:

• Output Voltage: Must be fixed at 3.3V
• Package Type: Must be SOT-23-5 (SC-74A, SOT-753)
• Mounting Type: Must be Surface Mount
• Input Voltage Range: Maximum input voltage must support 10V
• Output Configuration: Must be Positive Fixed output
• Number of Regulators: Must be single output (1 regulator)

Substitute parts are grouped into two categories:

Parametric Equivalent: Parts with identical or superior electrical specifications matching the original design requirements.

MFR Recommended Substitutes: Parts with enhanced capabilities (higher output current or improved performance characteristics) that maintain backward compatibility while offering design flexibility.

Parameter Comparison

Engineering Selection Recommendations

TPS77033DBVR (Parametric Equivalent): This Texas Instruments part maintains identical electrical specifications to the TPS77033DBVT with Active product status. It is the direct replacement for designs requiring no performance changes. Both parts share the same 50mA output current, 0.1V dropout voltage, and 28 µA quiescent current. The TPS77033DBVR is ROHS3 compliant and carries Active status, ensuring long-term availability.

TPS76933DBVR (MFR Recommended): This Texas Instruments substitute provides doubled output current capability (100mA versus 50mA) while maintaining the same 3.3V output voltage and SOT-23-5 package. The increased dropout voltage (0.2V @ 100mA) and identical quiescent current make this suitable for designs with higher current demands. Active product status ensures supply continuity.

S-1200B33-M5T1U (MFR Recommended): This ABLIC Inc. part delivers 150mA output current with significantly reduced quiescent current (1 µA versus 28 µA), beneficial for battery-powered applications. The 65dB PSRR provides improved noise rejection. Operating temperature range is -40°C to 85°C, which is narrower than the original part. ROHS3 compliant with Active status.

S-L2980A33MC-TF-U (MFR Recommended): This ABLIC Inc. part offers 150mA output current with the lowest dropout voltage (0.14V @ 50mA) and highest PSRR (70dB). Quiescent current is 1 µA. Operating temperature range is -40°C to 85°C. Supplied in Tape & Reel packaging. ROHS3 compliant with Active status.

All substitute parts maintain SOT-23-5 package compatibility, positive fixed output configuration, and 10V maximum input voltage specification. Selection should be based on output current requirements, operating temperature constraints, and power efficiency priorities.

Frequently Asked Questions (FAQ)

Q: Can TPS77033DBVR be used as a direct drop-in replacement for TPS77033DBVT?

A: Yes. The TPS77033DBVR is a parametric equivalent with identical electrical specifications. Both parts deliver 50mA at 3.3V with 0.1V dropout voltage in SOT-23-5 packaging. The primary difference is product status: TPS77033DBVT is Last Time Buy while TPS77033DBVR is Active.

Q: What is the advantage of using TPS76933DBVR over the original TPS77033DBVT?

A: The TPS76933DBVR provides double the output current (100mA versus 50mA) while maintaining the same 3.3V output voltage and SOT-23-5 package footprint. This allows designs to support higher current loads without changing the physical layout. The trade-off is increased dropout voltage (0.2V @ 100mA).

Q: Are the ABLIC parts (S-1200B33-M5T1U and S-L2980A33MC-TF-U) suitable for all applications?

A: The ABLIC parts offer superior quiescent current (1 µA) and higher PSRR values, making them ideal for low-power and noise-sensitive applications. However, their operating temperature range is limited to -40°C to 85°C, compared to -40°C to 125°C for Texas Instruments parts. Verify temperature requirements before selection.

Q: What is the difference between S-1200B33-M5T1U and S-L2980A33MC-TF-U?

A: Both deliver 150mA output current and 1 µA quiescent current. The S-L2980A33MC-TF-U has lower dropout voltage (0.14V @ 50mA versus 0.19V @ 100mA) and higher PSRR (70dB versus 65dB). The S-L2980A33MC-TF-U is supplied in Tape & Reel packaging, while S-1200B33-M5T1U packaging is not specified.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts are ROHS3 compliant and REACH unaffected, meeting environmental and regulatory requirements equivalent to the original TPS77033DBVT.

Q: Can I use a higher current-rated part in a design originally specified for 50mA?

A: Yes, provided the circuit design accommodates the substitute part's electrical characteristics. Higher current-rated regulators (TPS76933DBVR, S-1200B33-M5T1U, S-L2980A33MC-TF-U) are backward compatible for lower current applications. Verify dropout voltage and quiescent current specifications match your power budget requirements.