TPS79147DBVR Equivalent & Substitute Parts

Part Overview

The TPS79147DBVR is a linear voltage regulator IC from Texas Instruments, classified as a Power Management (PMIC) component. It delivers a positive fixed 4.7V output at 100mA in a SOT-23-5 surface mount package. The device is currently in Last Time Buy status, indicating end-of-life production. Finding equivalent or substitute parts is necessary to ensure design continuity and long-term component availability for new production runs and system maintenance.

Substiute Parts

TPS79147DBVR

Texas InstrumentsIn Stock: 1000237TPS79147DBVR Datasheet

Current PartRFQ

TPS78401DBVR

Texas InstrumentsIn Stock: 4921TPS78401DBVR Datasheet

MFR RecommendedRFQ

TPS79147DBVT

Texas InstrumentsIn Stock: 2424TPS79147DBVT Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the TPS79147DBVR is determined by the following critical parameters:

Parametric Equivalents maintain identical electrical specifications: positive fixed output voltage (4.7V), output current (100mA), input voltage rating (5.5V maximum), dropout voltage (0.7V @ 100mA), quiescent current (250 µA), and operating temperature range (-40°C to 85°C). These parts differ only in packaging format (Cut Tape vs. Tape & Reel).

Functional Alternatives provide the same voltage regulation function but with different electrical characteristics. These parts may have adjustable output voltage, higher output current capability, lower quiescent current, or extended operating temperature ranges. Functional alternatives require design verification to confirm compatibility with the target application's power budget and thermal constraints.

Parameter Comparison

Engineering Selection Recommendations

TPS79147DBVT is the direct parametric equivalent and preferred substitute when packaging format permits. Both parts share identical electrical performance and Last Time Buy status. Selection between Cut Tape (DBVR) and Tape & Reel (DBVT) depends on procurement volume and assembly line requirements. Both maintain ROHS3 compliance and MSL 1 rating.

TPS78401DBVR is a functional alternative suitable for applications requiring higher output current (300mA), lower quiescent current (35 µA), or extended operating temperature range (-40°C to 125°C). This part is currently in Active production status, providing long-term availability. The adjustable output voltage feature requires external resistor network configuration to set 4.7V output. The TPS78401DBVR is appropriate for new designs or redesigns where the additional capabilities justify circuit modification. MSL 2 rating requires controlled storage conditions (1 year maximum).

Frequently Asked Questions (FAQ)

Q: Can TPS79147DBVT directly replace TPS79147DBVR without circuit modification?

A: Yes. TPS79147DBVT is a parametric equivalent with identical electrical specifications. The only difference is packaging format (Tape & Reel vs. Cut Tape). No circuit changes are required.

Q: What is the difference between Cut Tape and Tape & Reel packaging?

A: Cut Tape (DBVR) is supplied in individual strips suitable for manual handling or small-volume assembly. Tape & Reel (DBVT) is supplied on continuous reels for automated pick-and-place assembly equipment. Electrical performance is identical.

Q: Can TPS78401DBVR replace TPS79147DBVR in existing designs?

A: TPS78401DBVR is a functional alternative, not a direct replacement. It requires external resistor configuration to set the output voltage to 4.7V. The circuit must be redesigned to accommodate the adjustable output topology. Verify that the higher output current capability (300mA vs. 100mA) and lower quiescent current (35 µA vs. 250 µA) are compatible with the application's power budget.

Q: Why is TPS79147DBVR in Last Time Buy status?

A: Last Time Buy status indicates Texas Instruments has discontinued production planning for this part. Existing inventory remains available, but no new production runs are scheduled. Transition to an active alternative part is recommended for long-term designs.

Q: What is the MSL rating and why does it matter?

A: Moisture Sensitivity Level (MSL) indicates the maximum time a component can be stored in standard conditions before moisture absorption affects solderability. TPS79147DBVR has MSL 1 (unlimited storage). TPS78401DBVR has MSL 2 (1 year maximum). MSL 2 components require controlled storage in dry-pack conditions with desiccant.

Q: Are all three parts RoHS compliant?

A: Yes. TPS79147DBVR, TPS79147DBVT, and TPS78401DBVR are all ROHS3 compliant and REACH unaffected.