TPS76330DBVT Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The TPS76330DBVT is a linear voltage regulator IC from Texas Instruments designed for positive fixed 3V output at 150mA in SOT-23-5 surface mount packaging. This device features integrated protection against overcurrent, overtemperature, and reverse polarity conditions, with an enable control feature for power management applications. The part is classified as Last Time Buy, indicating end-of-life status. Equivalent and substitute parts are necessary to ensure design continuity, maintain supply chain flexibility, and support long-term product availability across multiple manufacturing and application scenarios.

Key Parameters

Parameter	Value	Unit
Output Voltage (Fixed)	3V	V
Output Current	150mA	mA
Input Voltage (Max)	10V	V
Quiescent Current	100 µA	µA
PSRR @ 1kHz	60dB	dB
Operating Temperature Range	-40°C to 125°C	°C
Package	SOT-23-5 (SC-74A)	-
Protection Features	Over Current, Over Temperature, Reverse Polarity	-

Substitute Part Grouping Explanation

Substitution eligibility for the TPS76330DBVT is determined by the following critical parameters:

Output voltage fixed at 3V
Output current capability of 150mA minimum
SOT-23-5 package compatibility
Input voltage tolerance up to 10V
Surface mount mounting type
Positive output configuration
Enable control feature

Substitute parts are grouped into two categories:

Parametric Equivalents: Parts with identical electrical specifications (3V output, 150mA current, 10V input max, SOT-23-5 package) that differ only in packaging format (Cut Tape vs. Tape & Reel) or base product number variant.

Manufacturer Recommended Alternatives: Parts from alternative manufacturers (STMicroelectronics, Analog Devices/Maxim, ABLIC) that meet the core functional requirements of 3V fixed output and 150mA capability in SOT-23-5 packaging, with allowable variations in secondary parameters such as quiescent current, PSRR, dropout voltage, and operating temperature range.

Parameter Comparison

Part Number	Manufacturer	Output Voltage	Output Current	Input Voltage (Max)	Quiescent Current	PSRR @ 1kHz	Operating Temp	Package	Product Status
TPS76330DBVT	Texas Instruments	3V	150mA	10V	100 µA	60dB	-40°C to 125°C	SOT-23-5	Last Time Buy
TPS76330DBVR	Texas Instruments	3V	150mA	10V	100 µA	60dB	-40°C to 125°C	SOT-23-5	Active
TPS76430DBVR	Texas Instruments	3V	150mA	10V	100 µA	60dB	-40°C to 125°C	SOT-23-5	Active
TPS76430DBVT	Texas Instruments	3V	150mA	10V	100 µA	60dB	-40°C to 125°C	SOT-23-5	Active
TPS78430QDBVRQ1	Texas Instruments	3V	300mA	6V	40 µA	60dB ~ 30dB	-40°C to 150°C	SOT-23-5	Active
LD2985BM30R	STMicroelectronics	3V	150mA	16V	150 µA	45dB	-40°C to 125°C	SOT-23-5	Active
MAX8873TEUK+	Analog Devices Inc./Maxim Integrated	1.25V to 6.5V (3.15V fixed)	120mA	6.5V	150 µA	-	-40°C to 85°C	SOT-23-5	Active
MAX8873TEUK+T	Analog Devices Inc./Maxim Integrated	1.25V to 6.5V (3.15V fixed)	120mA	6.5V	150 µA	-	-40°C to 85°C	SOT-23-5	Active
S-1200B30-M5T1G	ABLIC Inc.	3V	150mA	10V	1 µA	70dB	-40°C to 85°C	SOT-23-5	Not For New Designs
S-1200B30-M5T1U	ABLIC Inc.	3V	150mA	10V	1 µA	70dB	-40°C to 85°C	SOT-23-5	Active
S-L2980A30MC-TF-U	ABLIC Inc.	3V	150mA	10V	1 µA	70dB	-40°C to 85°C	SOT-23-5	Active

Engineering Selection Recommendations

Primary Recommendation - Texas Instruments Active Equivalents: TPS76330DBVR, TPS76430DBVR, and TPS76430DBVT are direct parametric equivalents with identical electrical specifications and Active product status. These parts maintain full compatibility with existing designs and offer the longest available product lifecycle. Selection between these variants depends on packaging format requirements (Cut Tape vs. Tape & Reel).

Secondary Recommendation - Enhanced Performance Alternative: TPS78430QDBVRQ1 offers doubled output current (300mA) and extended operating temperature range (-40°C to 150°C) with AEC-Q100 automotive qualification. This part is suitable for applications requiring higher current capacity or automotive-grade reliability, though it operates at reduced maximum input voltage (6V vs. 10V).

Alternative Manufacturer Options: LD2985BM30R (STMicroelectronics) provides equivalent 3V/150mA functionality with higher input voltage tolerance (16V) and ROHS3 compliance. S-1200B30-M5T1U and S-L2980A30MC-TF-U (ABLIC Inc.) offer superior quiescent current performance (1 µA) and higher PSRR (70dB), with Active product status and full compliance certifications.

Not Recommended for New Designs: S-1200B30-M5T1G carries Not For New Designs status and should be avoided in new development projects despite meeting electrical requirements.

Limited Compatibility: MAX8873TEUK+ and MAX8873TEUK+T feature adjustable output voltage capability (1.25V to 6.5V) with reduced output current (120mA) and narrower operating temperature range (-40°C to 85°C). These parts are suitable only for applications where adjustable voltage is beneficial and 120mA current is sufficient.

Frequently Asked Questions (FAQ)

Q: Can TPS76330DBVR directly replace TPS76330DBVT? A: Yes. Both parts are parametric equivalents with identical electrical specifications (3V output, 150mA current, 10V input max, SOT-23-5 package). The difference is packaging format: DBVT uses Cut Tape while DBVR uses Cut Tape & Digi-Reel. Electrical performance and pinout are identical.

Q: What is the difference between TPS76330DBVR and TPS76430DBVR? A: These parts are parametric equivalents with identical electrical specifications. The base product number differs (TPS76330 vs. TPS76430), but both deliver 3V/150mA output in SOT-23-5 packaging with identical performance characteristics. Selection can be based on availability or supplier preference.

Q: Can I use TPS78430QDBVRQ1 as a direct replacement? A: TPS78430QDBVRQ1 is not a direct replacement due to critical parameter differences. While it maintains 3V output and SOT-23-5 packaging, it offers doubled current capacity (300mA vs. 150mA), reduced maximum input voltage (6V vs. 10V), and extended temperature range (-40°C to 150°C). Use only if your application can tolerate the 6V input limit and benefits from higher current or automotive qualification.

Q: Why would I choose LD2985BM30R over Texas Instruments alternatives? A: LD2985BM30R (STMicroelectronics) provides equivalent 3V/150mA functionality with higher input voltage tolerance (16V vs. 10V), making it suitable for applications with higher input supply voltages. It maintains SOT-23-5 packaging and ROHS3 compliance. Select based on input voltage requirements and supplier availability.

Q: Are ABLIC S-1200 and S-L2980 series suitable replacements? A: Yes, both ABLIC series (S-1200B30-M5T1U and S-L2980A30MC-TF-U) meet core requirements with 3V/150mA output in SOT-23-5 packaging. They offer superior quiescent current (1 µA vs. 100 µA) and higher PSRR (70dB vs. 60dB), beneficial for low-power and noise-sensitive applications. Operating temperature range is narrower (-40°C to 85°C vs. -40°C to 125°C). Avoid S-1200B30-M5T1G due to Not For New Designs status.

Q: What are the limitations of MAX8873TEUK+ variants? A: MAX8873TEUK+ and MAX8873TEUK+T feature adjustable output voltage (1.25V to 6.5V) rather than fixed 3V, requiring external resistor network configuration. Output current is reduced to 120mA, and operating temperature range is limited to -40°C to 85°C. Maximum input voltage is 6.5V. Use only if adjustable voltage capability is required and current/temperature limitations are acceptable.

Q: Are all substitute parts RoHS3 compliant? A: All listed substitute parts carry ROHS3 Compliant status except TPS78430QDBVRQ1, which shows Not applicable. All parts are REACH Unaffected and carry EAR99 ECCN classification.

Q: What packaging options are available? A: All substitute parts use SOT-23-5 (SC-74A) surface mount packaging, maintaining mechanical compatibility. Packaging format variants include Cut Tape (CT), Tape & Reel (TR), and Digi-Reel. Select based on procurement and assembly requirements.

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