TPS79147DBVT Equivalent & Substitute Parts

Part Overview

The TPS79147DBVT is a linear voltage regulator IC from Texas Instruments, classified as a Power Management (PMIC) component. It delivers a fixed positive output of 4.7V at 100mA with a maximum dropout voltage of 0.7V. The device is packaged in SOT-23-5 (SC-74A, SOT-753) and mounted as a surface mount component.

This part carries a Last Time Buy product status, indicating it has been discontinued or is approaching end-of-life. Identifying equivalent and substitute parts is necessary to ensure design continuity and maintain supply chain reliability for applications currently using this regulator.

Substiute Parts

TPS79147DBVT

Texas InstrumentsIn Stock: 2424TPS79147DBVT Datasheet

Current PartRFQ

TPS78401DBVR

Texas InstrumentsIn Stock: 4921TPS78401DBVR Datasheet

MFR RecommendedRFQ

TPS79147DBVR

Texas InstrumentsIn Stock: 1000237TPS79147DBVR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TPS79147DBVT are identified based on the following allowable parameters:

Packaging Compatibility: All substitutes must use SOT-23-5 package (SC-74A, SOT-753) to ensure direct board-level compatibility without layout modifications.

Output Configuration: Substitutes must provide positive output configuration.

Electrical Performance: Substitutes must meet or exceed the output current requirement of 100mA and maintain compatibility with the 5.5V maximum input voltage specification.

Protection Features: Substitutes must include Over Current and Over Temperature protection as minimum requirements.

Compliance: All substitutes must maintain ROHS3 compliance and EAR99 ECCN classification.

The TPS79147DBVR serves as a parametric equivalent with identical electrical specifications but different packaging format (Cut Tape & Digi-Reel versus Tape & Reel). The TPS78401DBVR is classified as a manufacturer-recommended substitute, offering enhanced performance characteristics including higher output current capacity and adjustable output voltage, while maintaining package compatibility and core protection features.

Parameter Comparison

Engineering Selection Recommendations

TPS79147DBVR (Parametric Equivalent): This part is the direct equivalent to TPS79147DBVT with identical electrical specifications and protection features. The only difference is the packaging format (Cut Tape & Digi-Reel versus Tape & Reel). Selection of this part is appropriate when the application requires exact electrical performance matching and packaging format is not a constraint. Both parts share Last Time Buy status, so this option provides continuity without performance changes but does not resolve long-term supply concerns.

TPS78401DBVR (Manufacturer-Recommended Substitute): This part is recommended by Texas Instruments as the forward-looking alternative. It maintains SOT-23-5 package compatibility and all required protection features. Key advantages include Active product status (ensuring continued availability), extended operating temperature range (-40°C ~ 125°C), lower quiescent current (35 µA versus 250 µA), and improved dropout voltage (0.3V @ 300mA). The adjustable output voltage (1.2V ~ 5.5V) and higher output current (300mA) provide design flexibility. For applications requiring only 4.7V fixed output at 100mA, the TPS78401DBVR can be configured to deliver this specification through external resistor networks. The Active product status makes this the preferred long-term solution for new designs and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can TPS79147DBVR be used as a direct drop-in replacement for TPS79147DBVT?

A: Yes. TPS79147DBVR is a parametric equivalent with identical electrical specifications, protection features, and SOT-23-5 package. The only difference is the packaging format (Cut Tape & Digi-Reel versus Tape & Reel). No circuit modifications are required.

Q: What is the primary advantage of TPS78401DBVR over TPS79147DBVT?

A: TPS78401DBVR carries Active product status, ensuring continued manufacturer support and availability. It also offers lower quiescent current (35 µA versus 250 µA), improved dropout voltage performance, and higher output current capacity (300mA versus 100mA). These characteristics make it suitable for power-sensitive and higher-current applications.

Q: Can TPS78401DBVR replace TPS79147DBVT in an existing design without modifications?

A: TPS78401DBVR requires external resistor configuration to set the output voltage to 4.7V, as it is an adjustable regulator. The SOT-23-5 package is compatible, but circuit modifications are necessary to configure the output voltage. Refer to the TPS78401DBVR datasheet for resistor divider network design.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. Both TPS79147DBVR and TPS78401DBVR are ROHS3 compliant and maintain EAR99 ECCN classification, matching the compliance profile of TPS79147DBVT.

Q: What is the difference between Last Time Buy and Active product status?

A: Last Time Buy indicates the manufacturer has discontinued or will discontinue the part. Active status means the manufacturer continues to produce and support the part. TPS78401DBVR's Active status provides assurance of long-term availability and supply chain stability.

Q: Do all substitute parts support the same protection features?

A: TPS79147DBVR includes all protection features of the main part (Over Current, Over Temperature, Reverse Polarity, UVLO). TPS78401DBVR includes Over Current, Over Temperature, and UVLO protection but does not include Reverse Polarity protection. Verify application requirements before selection.