TPS78833DBVT Equivalent & Substitute Parts

Part Overview

The TPS78833DBVT is a linear voltage regulator IC from Texas Instruments designed for positive fixed 3.3V output applications. This Surface Mount device delivers 150mA output current in a compact SOT-23-5 package. The part is currently in Last Time Buy status, indicating end-of-life production. Identifying equivalent and substitute parts is necessary to ensure design continuity and maintain supply chain reliability for applications requiring this regulator's specifications.

Substiute Parts

TPS78833DBVT

Texas InstrumentsIn Stock: 2246TPS78833DBVT Datasheet

Current PartRFQ

TPS76933DBVR

Texas InstrumentsIn Stock: 55306TPS76933DBVR Datasheet

MFR RecommendedRFQ

TPS78833DBVR

Texas InstrumentsIn Stock: 330209TPS78833DBVR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TPS78833DBVT are identified based on the following critical parameters that determine functional compatibility:

Primary Compatibility Criteria:

• Output voltage: 3.3V fixed
• Package type: SOT-23-5 (SC-74A, SOT-753)
• Mounting type: Surface Mount
• Output configuration: Positive
• Protection features: Over Current, Over Temperature, Reverse Polarity
• Input voltage rating: 10V maximum
• Control features: Enable function

Substitution Logic: The TPS76933DBVR qualifies as a manufacturer-recommended substitute despite lower output current (100mA vs 150mA) because it maintains identical output voltage, package, and core protection architecture. The TPS78833DBVR is a parametric equivalent offering identical electrical specifications and output current to the main part, differing only in packaging format (Cut Tape vs Cut Tape & Digi-Reel).

Parameter Comparison

Engineering Selection Recommendations

TPS78833DBVR (Parametric Equivalent): This part provides identical electrical performance and output current capacity to the TPS78833DBVT. Selection is appropriate for applications requiring full 150mA output current and 70dB PSRR performance. Both parts share Last Time Buy status, indicating similar supply constraints. This option maintains complete functional parity with the original design.

TPS76933DBVR (Manufacturer-Recommended Substitute): This part is designated as the manufacturer-recommended alternative and carries Active product status, ensuring long-term availability. It is suitable for applications where output current requirements do not exceed 100mA. The TPS76933DBVR offers superior quiescent current performance (28 µA vs 385 µA) and extended operating temperature range (-40°C ~ 125°C vs -40°C ~ 85°C). PSRR is reduced to 60dB at 1kHz and dropout voltage is lower at 0.2V @ 100mA. All parts maintain ROHS3 compliance and identical package specifications.

Frequently Asked Questions (FAQ)

Q: Can the TPS76933DBVR replace the TPS78833DBVT in all applications? A: The TPS76933DBVR is suitable for applications where maximum output current does not exceed 100mA. If your design requires the full 150mA output current capability, this substitute is not appropriate. Verify your circuit's maximum load current before selection.

Q: What is the difference between TPS78833DBVT and TPS78833DBVR? A: Both parts are parametrically identical with matching electrical specifications and 150mA output current. The difference is in packaging format: DBVT is supplied in Cut Tape, while DBVR is available in both Cut Tape and Digi-Reel formats. Electrical performance and PCB footprint are identical.

Q: Why is the TPS76933DBVR recommended if it has lower output current? A: The TPS76933DBVR is manufacturer-recommended due to its Active product status, ensuring continued availability and supply chain stability. It is the designated long-term solution for applications within its 100mA current rating. The TPS78833DBVT and TPS78833DBVR are both Last Time Buy parts with limited future availability.

Q: Are all three parts compatible with the same PCB layout? A: Yes. All three parts use identical SOT-23-5 packaging (SC-74A, SOT-753), ensuring pin-for-pin compatibility and identical PCB footprints. No layout modifications are required when substituting between these parts.

Q: What compliance certifications apply to these parts? A: All three parts are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. Moisture Sensitivity Level is 1 (Unlimited) for all parts.