TPS79101DBVRQ1 Equivalent & Substitute Parts

Part Overview

The TPS79101DBVRQ1 is a linear voltage regulator IC from Texas Instruments designed for positive adjustable output applications. This automotive-grade component delivers 100mA output current in a compact SOT-23-6 surface mount package. The device is classified as Last Time Buy, indicating production discontinuation. Identifying equivalent and substitute parts is essential for design continuity, inventory management, and long-term product support.

Key Parameters

Parameter	Value
Manufacturer Part Number	TPS79101DBVRQ1
Manufacturer	Texas Instruments
Category	Power Management (PMIC)
Output Configuration	Positive
Output Type	Adjustable
Voltage - Input (Max)	5.5V
Voltage - Output (Min/Fixed)	1.2V
Voltage - Output (Max)	5.5V
Current - Output	100mA
Current - Quiescent (Iq)	250 µA
Package / Case	SOT-23-6
Grade	Automotive
Qualification	AEC-Q100
Operating Temperature	-40°C ~ 125°C
Product Status	Last Time Buy

Substitute Part Grouping Explanation

Substitute parts for the TPS79101DBVRQ1 are classified into two categories based on substitution criteria:

Parametric Equivalent: Parts that maintain identical electrical specifications and package form factor, enabling direct replacement without circuit modification.

Manufacturer Recommended Substitute: Parts that provide enhanced performance characteristics while maintaining functional compatibility within the same product family. These substitutes may require circuit evaluation due to differences in output current capacity, quiescent current, or package configuration.

The substitution logic is based on the following allowed parameters:

Output configuration (Positive)
Output type (Adjustable)
Voltage range compatibility (Input Max, Output Min/Max)
Automotive grade and AEC-Q100 qualification
Surface mount mounting type
Protection features (Over Current, Over Temperature, Under Voltage Lockout)

Parameter Comparison

Parameter	TPS79101DBVRQ1	TPS79101DBVREP	TPS78401QDBVRQ1
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments
Output Configuration	Positive	Positive	Positive
Output Type	Adjustable	Adjustable	Adjustable
Voltage - Input (Max)	5.5V	5.5V	6V
Voltage - Output (Min/Fixed)	1.2V	1.2V	1.2V
Voltage - Output (Max)	5.5V	5.5V	5.5V
Current - Output	100mA	100mA	300mA
Current - Quiescent (Iq)	250 µA	250 µA	40 µA
Package / Case	SOT-23-6	SOT-23-6	SOT-23-5
Grade	Automotive	Automotive	Automotive
Qualification	AEC-Q100	AEC-Q100	AEC-Q100
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 150°C
Product Status	Last Time Buy	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

TPS79101DBVREP is the primary parametric equivalent for direct replacement. This part maintains identical electrical specifications, output current rating, quiescent current, and package configuration. Both parts are automotive-grade with AEC-Q100 qualification and ROHS3 compliance. The TPS79101DBVREP is currently in Active product status, providing long-term availability and supply chain stability compared to the Last Time Buy status of the original part.

TPS78401QDBVRQ1 is the manufacturer-recommended substitute for applications requiring enhanced performance. This part provides three times the output current capacity (300mA versus 100mA) and significantly lower quiescent current (40 µA versus 250 µA), resulting in improved power efficiency. The extended operating temperature range (-40°C ~ 150°C) and additional control features (Current Limit, Soft Start) support demanding automotive applications. The package change from SOT-23-6 to SOT-23-5 requires PCB layout modification. Both parts maintain automotive-grade qualification and ROHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can TPS79101DBVREP be used as a direct replacement for TPS79101DBVRQ1?

A: Yes. The TPS79101DBVREP is a parametric equivalent with identical electrical specifications, output current, quiescent current, and SOT-23-6 package configuration. No circuit modifications are required.

Q: What are the key differences between TPS79101DBVRQ1 and TPS78401QDBVRQ1?

A: The TPS78401QDBVRQ1 provides higher output current (300mA versus 100mA), lower quiescent current (40 µA versus 250 µA), higher maximum input voltage (6V versus 5.5V), extended operating temperature range (-40°C ~ 150°C versus -40°C ~ 125°C), and additional control features. The package changes from SOT-23-6 to SOT-23-5, requiring PCB layout modification.

Q: Is the TPS78401QDBVRQ1 suitable for applications originally designed for the TPS79101DBVRQ1?

A: The TPS78401QDBVRQ1 is functionally compatible for applications requiring positive adjustable voltage regulation within the specified voltage ranges. Circuit evaluation is required to confirm compatibility with the different package pinout and to verify that the enhanced specifications meet application requirements.

Q: What packaging formats are available for these substitute parts?

A: TPS79101DBVRQ1 is supplied in Tape & Reel (TR) format. TPS79101DBVREP is available in standard packaging. TPS78401QDBVRQ1 is supplied in Cut Tape (CT) and Digi-Reel® formats. Verify packaging requirements with your procurement specifications.

Q: Are all three parts automotive-grade and AEC-Q100 qualified?

A: Yes. All three parts are automotive-grade components with AEC-Q100 qualification and ROHS3 compliance, suitable for automotive applications.

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