TPS77012DBVT Equivalent & Substitute Parts

Part Overview

The TPS77012DBVT is a linear voltage regulator IC from Texas Instruments designed for positive fixed output applications. It delivers 1.2V at 50mA output current in a compact SOT-23-5 surface mount package. The device is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing design support, production continuity, and system maintenance. Substitute parts must maintain compatibility across electrical specifications, thermal performance, and mechanical packaging to ensure reliable operation in existing applications.

Key Parameters

Parameter	Value	Unit
Manufacturer	Texas Instruments	—
Category	Power Management (PMIC)	—
Output Voltage (Fixed)	1.2V	V
Output Current	50mA	mA
Input Voltage (Max)	10V	V
Quiescent Current	28 µA	µA
PSRR	60dB @ 1kHz	dB
Operating Temperature Range	-40°C to 125°C	°C
Package	SOT-23-5 (SC-74A)	—
Mounting Type	Surface Mount	—
Protection Features	Over Current, Over Temperature, Reverse Polarity	—

Substitute Part Grouping Explanation

Substitute parts for the TPS77012DBVT are classified into two categories based on substitution criteria:

Parametric Equivalent (Direct Replacement): TPS77012DBVR maintains identical electrical specifications including 1.2V fixed output, 50mA output current, 10V maximum input voltage, 28 µA quiescent current, and 60dB PSRR. The only difference is packaging format (Cut Tape vs. Tape & Reel). This part qualifies as a direct parametric equivalent suitable for applications requiring the same electrical performance and thermal characteristics.

Manufacturer Recommended Substitute (Functional Alternative): TPS7A2401DBVR is designated as the manufacturer-recommended upgrade path. While it operates in the same SOT-23-5 package and maintains the same mounting type, it introduces functional differences: adjustable output voltage (1.24V to 17.75V), higher output current capability (200mA vs. 50mA), higher maximum input voltage (18V vs. 10V), and improved quiescent current performance (4.5 µA vs. 28 µA). This part is suitable for applications requiring greater flexibility and higher current delivery, though design modifications may be necessary to configure the adjustable output to 1.2V.

Substitution eligibility is determined by: output voltage compatibility, output current requirements, input voltage range, package form factor (SOT-23-5), surface mount capability, and operating temperature range (-40°C to 125°C).

Parameter Comparison

Parameter	TPS77012DBVT (Main)	TPS77012DBVR (Parametric Equivalent)	TPS7A2401DBVR (Manufacturer Recommended)
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments
Product Status	Obsolete	Last Time Buy	Active
Output Configuration	Positive Fixed	Positive Fixed	Positive Adjustable
Output Voltage	1.2V (Fixed)	1.2V (Fixed)	1.24V to 17.75V (Adjustable)
Output Current	50mA	50mA	200mA
Input Voltage (Max)	10V	10V	18V
Quiescent Current	28 µA	28 µA	4.5 µA
PSRR	60dB @ 1kHz	60dB @ 1kHz	75dB ~ 62dB (10Hz ~ 1kHz)
Dropout Voltage (Max)	Not specified	Not specified	0.25V @ 200mA
Package	SOT-23-5	SOT-23-5	SOT-23-5
Packaging Format	Tape & Reel (TR)	Cut Tape (CT)	Cut Tape (CT) & Digi-Reel®
Operating Temperature	-40°C to 125°C	-40°C to 125°C	-40°C to 125°C
Protection Features	Over Current, Over Temperature, Reverse Polarity	Over Current, Over Temperature, Reverse Polarity	Over Current, Over Temperature, Under Voltage Lockout (UVLO)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

For Direct Replacement (Parametric Equivalent): TPS77012DBVR is the appropriate choice when sourcing the obsolete TPS77012DBVT. It maintains identical electrical performance and thermal specifications. The part is in Last Time Buy status, indicating limited future availability. Both parts carry ROHS3 compliance, REACH unaffected status, and MSL 1 rating, ensuring regulatory and environmental compatibility. Packaging format differs (Cut Tape vs. Tape & Reel), which may affect procurement and assembly processes but does not impact electrical or thermal performance.

For Functional Upgrade (Manufacturer Recommended): TPS7A2401DBVR is designated by Texas Instruments as the recommended upgrade path for the TPS77012DBVT. This part is in Active production status, ensuring long-term availability and supply chain stability. The adjustable output voltage topology requires external resistor network configuration to establish 1.2V output, necessitating circuit design modifications. The higher output current capability (200mA), improved quiescent current (4.5 µA), and enhanced PSRR performance provide additional design flexibility. This part is suitable for new designs or redesigns where the additional capabilities justify implementation effort. ROHS3 compliance and MSL 1 rating maintain regulatory alignment.

Compliance Considerations: All three parts maintain ROHS3 compliance and REACH unaffected status. MSL 1 rating (unlimited moisture sensitivity) applies uniformly across all options, eliminating moisture-related storage and handling constraints.

Frequently Asked Questions (FAQ)

Q: Can TPS77012DBVR be used as a direct replacement for TPS77012DBVT?

A: Yes. TPS77012DBVR is a parametric equivalent with identical electrical specifications: 1.2V fixed output, 50mA output current, 10V maximum input voltage, 28 µA quiescent current, and 60dB PSRR. The only difference is packaging format (Cut Tape vs. Tape & Reel). No circuit modifications are required. However, TPS77012DBVR is in Last Time Buy status, indicating limited future availability.

Q: What is the difference between TPS77012DBVR and TPS7A2401DBVR?

A: TPS77012DBVR is a fixed-output equivalent (1.2V), while TPS7A2401DBVR is an adjustable-output device (1.24V to 17.75V). TPS7A2401DBVR offers higher output current (200mA vs. 50mA), higher input voltage rating (18V vs. 10V), lower quiescent current (4.5 µA vs. 28 µA), and improved PSRR. TPS7A2401DBVR requires external resistor configuration to set output voltage and is in Active production status.

Q: Why would I choose TPS7A2401DBVR over TPS77012DBVR?

A: TPS7A2401DBVR is recommended when: (1) long-term supply chain stability is critical (Active status vs. Last Time Buy), (2) higher output current capability is needed, (3) lower quiescent current reduces power consumption, or (4) design flexibility for adjustable output voltage is beneficial. Circuit design modifications are required to configure the adjustable output to 1.2V.

Q: Are all three parts compatible with the same PCB footprint?

A: Yes. All three parts use the SOT-23-5 package (SC-74A, SOT-753), which defines identical pin configuration and PCB footprint. No PCB layout changes are required for substitution between these parts.

Q: What is the impact of packaging format differences (Tape & Reel vs. Cut Tape)?

A: Packaging format affects procurement and assembly processes but not electrical or thermal performance. Tape & Reel (TR) format is optimized for high-volume automated assembly. Cut Tape (CT) format is suitable for lower-volume or manual assembly processes. Both formats contain the same component with identical specifications.

Q: Are there any compliance or regulatory differences between these parts?

A: No. All three parts maintain ROHS3 compliance, REACH unaffected status, and MSL 1 rating. Regulatory and environmental compliance is uniform across all options.

Q: What is the operating temperature range for all substitute parts?

A: All three parts operate across -40°C to 125°C, ensuring compatibility across industrial and extended temperature applications.

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