TPS76328DBVT Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The TPS76328DBVT is a linear voltage regulator IC manufactured by Texas Instruments, classified as a Power Management (PMIC) component. This device delivers a fixed positive output of 2.8V at 150mA in a surface-mount SOT-23-5 package. The part is currently listed as obsolete, making identification of active equivalent and substitute parts essential for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Part Number	TPS76328DBVT
Product Status	Obsolete
Output Voltage (Fixed)	2.8V
Output Current	150mA
Input Voltage (Max)	10V
Package Type	SOT-23-5 (SC-74A, SOT-753)
Quiescent Current	100 µA
PSRR	60dB (1kHz)
Operating Temperature	-40°C ~ 125°C
Protection Features	Over Current, Over Temperature, Reverse Polarity
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the TPS76328DBVT is determined by the following critical parameters:

Output Voltage: 2.8V fixed output
Output Current Capability: 150mA minimum
Input Voltage Range: Maximum 10V
Package: SOT-23-5 form factor
Mounting Type: Surface mount
Compliance: ROHS3 compliant

Substitute parts are grouped into two categories:

Parametric Equivalents (Texas Instruments TPS76328DBVR, TPS76428DBVR, TPS76428DBVT): These parts maintain identical electrical specifications including fixed 2.8V output, 150mA current rating, 10V maximum input, and equivalent protection features. Differences exist only in packaging format (Tape & Reel vs. Cut Tape) and product status (Active vs. Obsolete).

Manufacturer-Recommended Alternatives (ABLIC S-1200B28-M5T1U, S-L2980A28MC-TF-U; Torex XC6209B282MR-G): These parts meet the core functional requirements of 2.8V fixed output and 150mA current delivery in SOT-23-5 packaging. Variations in quiescent current, PSRR, dropout voltage, and operating temperature ranges exist but do not prevent functional substitution within the specified electrical envelope.

Advanced Alternative (Texas Instruments TPS7A2401DBVR): This part offers enhanced specifications including adjustable output (1.24V to 17.75V), higher current capability (200mA), and superior quiescent current performance (4.5 µA). It is suitable only when design flexibility permits output voltage adjustment and when the higher input voltage rating (18V) is beneficial.

Parameter Comparison

Parameter	TPS76328DBVT (Main)	TPS76328DBVR	TPS76428DBVR	TPS76428DBVT	S-1200B28-M5T1U	S-L2980A28MC-TF-U	XC6209B282MR-G	TPS7A2401DBVR
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	ABLIC Inc.	ABLIC Inc.	Torex Semiconductor	Texas Instruments
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active
Output Voltage	2.8V Fixed	2.8V Fixed	2.8V Fixed	2.8V Fixed	2.8V Fixed	2.8V Fixed	2.8V Fixed	1.24V to 17.75V Adjustable
Output Current	150mA	150mA	150mA	150mA	150mA	150mA	150mA	200mA
Input Voltage (Max)	10V	10V	10V	10V	10V	10V	10V	18V
Quiescent Current	100 µA	100 µA	100 µA	100 µA	1 µA	1 µA	50 µA	4.5 µA
PSRR (1kHz)	60dB	60dB	60dB	60dB	70dB	70dB	70dB (10kHz)	75dB ~ 62dB (10Hz ~ 1kHz)
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 125°C
Package	SOT-23-5	SOT-23-5	SOT-23-5	SOT-23-5	SOT-23-5	SOT-23-5	SOT-25	SOT-23-5
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Direct Parametric Equivalents: TPS76328DBVR, TPS76428DBVR, and TPS76428DBVT are the primary substitutes for the obsolete TPS76328DBVT. All three maintain identical electrical specifications and are manufactured by Texas Instruments with active product status. These parts are suitable for direct replacement without circuit modification. The TPS76328DBVR is the closest match, differing only in packaging format (Tape & Reel). Selection between TPS76428DBVR and TPS76428DBVT depends on packaging requirements (Tape & Reel vs. Cut Tape).

Alternative Manufacturers: S-1200B28-M5T1U (ABLIC), S-L2980A28MC-TF-U (ABLIC), and XC6209B282MR-G (Torex) provide functional equivalence with active product status and ROHS3 compliance. These alternatives offer improved quiescent current performance (1 µA to 50 µA versus 100 µA) and enhanced PSRR characteristics (70dB). Operating temperature range is reduced to -40°C ~ 85°C, which may be a limiting factor in high-temperature applications. These parts are suitable when supply chain availability of Texas Instruments parts is constrained.

Enhanced Alternative: TPS7A2401DBVR is recommended only when design requirements permit output voltage adjustment or when higher input voltage tolerance (18V) is necessary. This part is not a direct replacement due to its adjustable output configuration and requires circuit redesign to establish the 2.8V output voltage through external resistor divider networks.

Frequently Asked Questions (FAQ)

Q: Can I use TPS76328DBVR as a direct replacement for TPS76328DBVT?

A: Yes. Both parts are manufactured by Texas Instruments with identical electrical specifications: 2.8V fixed output, 150mA current rating, 10V maximum input voltage, SOT-23-5 package, and equivalent protection features. The only difference is packaging format (Tape & Reel for DBVR versus Tape & Reel for DBVT). TPS76328DBVR is active and recommended for new designs.

Q: What is the difference between TPS76428DBVR and TPS76328DBVR?

A: Electrically, both parts are identical in output voltage (2.8V), current rating (150mA), input voltage range (10V max), and protection features. The difference lies in the base product number designation (TPS76428 versus TPS76328), which reflects internal design revisions by Texas Instruments. Both are active products suitable for substitution.

Q: Can I substitute ABLIC or Torex parts for the Texas Instruments TPS76328DBVT?

A: Yes, with design considerations. S-1200B28-M5T1U, S-L2980A28MC-TF-U, and XC6209B282MR-G maintain the core specifications: 2.8V fixed output, 150mA current, 10V maximum input, and SOT-23-5 packaging. However, operating temperature range is limited to -40°C ~ 85°C (versus -40°C ~ 125°C for Texas Instruments parts). These alternatives are suitable for applications not requiring extended high-temperature operation.

Q: What are the advantages of using S-1200B28-M5T1U or S-L2980A28MC-TF-U?

A: Both ABLIC parts offer significantly lower quiescent current (1 µA versus 100 µA), reducing standby power consumption. PSRR is improved to 70dB at 1kHz. These benefits are valuable in battery-powered or low-power applications. Trade-offs include reduced operating temperature range and lower inventory availability.

Q: Is XC6209B282MR-G compatible with the TPS76328DBVT?

A: Yes. The Torex XC6209B282MR-G provides functional equivalence with 2.8V fixed output, 150mA current capability, and SOT-23-5 package compatibility. Quiescent current is 50 µA (lower than TPS76328DBVT at 100 µA) and PSRR is 70dB. Operating temperature is limited to -40°C ~ 85°C. Note that the supplier device package is listed as SOT-25, which may require PCB layout verification for pin compatibility.

Q: When should I consider TPS7A2401DBVR?

A: TPS7A2401DBVR is suitable only when design flexibility permits adjustable output voltage configuration. This part requires external resistor networks to establish the 2.8V output and is not a drop-in replacement. It offers advantages including higher current capability (200mA), superior quiescent current (4.5 µA), and extended input voltage range (18V). Use this part only when redesign is acceptable and these enhanced specifications provide system-level benefits.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed (TPS76328DBVR, TPS76428DBVR, TPS76428DBVT, S-1200B28-M5T1U, S-L2980A28MC-TF-U, XC6209B282MR-G, and TPS7A2401DBVR) are ROHS3 compliant and suitable for applications requiring environmental compliance certification.

Q: What is the primary limitation of ABLIC and Torex alternatives?

A: The primary limitation is operating temperature range, restricted to -40°C ~ 85°C compared to -40°C ~ 125°C for Texas Instruments parts. Applications requiring operation above 85°C ambient or junction temperature must use Texas Instruments alternatives (TPS76328DBVR, TPS76428DBVR, TPS76428DBVT, or TPS7A2401DBVR).

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