TPS73030DBVT Equivalent & Substitute Parts

Part Overview

The TPS73030DBVT is a linear voltage regulator IC from Texas Instruments designed for positive fixed 3V output at 200mA in SOT-23-5 surface mount packaging. This device is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. The regulator features integrated protection including over-current, over-temperature, reverse polarity, and under-voltage lockout (UVLO) functionality, with a maximum dropout voltage of 0.21V at 200mA and quiescent current of 250µA.

Key Parameters

Parameter	Value
Output Voltage (Fixed)	3V
Output Current	200mA
Input Voltage (Max)	5.5V
Dropout Voltage (Max)	0.21V @ 200mA
Quiescent Current	250µA
PSRR	68dB (100Hz)
Package	SOT-23-5
Operating Temperature	-40°C to 125°C
Protection Features	Over Current, Over Temperature, Reverse Polarity, UVLO

Substitute Part Grouping Explanation

Substitution for the TPS73030DBVT is determined by the following critical parameters:

Fixed 3V output voltage
Positive output configuration
SOT-23-5 or equivalent thin SOT-23-5 (TSOT-23-5) package
Operating temperature range -40°C to 125°C
Surface mount mounting type
RoHS3 compliance

Substitute parts are grouped into three categories:

Direct Parametric Equivalents: Parts with identical electrical specifications and packaging, differing only in product status or packaging format (tape & reel vs. cut tape).

Manufacturer Recommended Alternatives: Parts with similar or superior electrical performance that meet the same functional requirements, including higher current capability or improved specifications.

Functional Equivalents: Parts with comparable output current and voltage characteristics within acceptable tolerance ranges for the application.

Parameter Comparison

Part Number	Manufacturer	Output Voltage	Output Current	Input Voltage (Max)	Dropout Voltage (Max)	Quiescent Current	Package	Product Status
TPS73030DBVT	Texas Instruments	3V	200mA	5.5V	0.21V @ 200mA	250µA	SOT-23-5	Obsolete
TPS73030DBVR	Texas Instruments	3V	200mA	5.5V	0.21V @ 200mA	250µA	SOT-23-5	Active
TPS79330QDBVRQ1	Texas Instruments	3V	200mA	5.5V	0.2V @ 200mA	220µA	SOT-23-5	Last Time Buy
LP2985AIM5-3.0/NOPB	Texas Instruments	3V	150mA	16V	0.58V @ 150mA	95µA	SOT-23-5	Active
LP2985AIM5X-3.0/NOPB	National Semiconductor	3V	150mA	16V	0.58V @ 150mA	95µA	SOT-23-5	Active
MIC5255-3.0YD5-TR	Microchip Technology	3V	150mA	6V	0.25V @ 150mA	150µA	TSOT-23-5	Active
MIC5305-3.0YD5-TR	Microchip Technology	3V	150mA	5.5V	0.85V @ 150mA	150µA	TSOT-23-5	Active
MIC5319-3.0YD5-TR	Microchip Technology	3V	500mA	5.5V	0.4V @ 500mA	150µA	TSOT-23-5	Active
RT9193-30GB	Richtek USA Inc.	3V	300mA	5.5V	0.3V @ 300mA	130µA	SOT-23-5	Active
S-1137D30-M5T1U	ABLIC Inc.	3V	300mA	5.5V	0.31V @ 300mA	1µA	SOT-23-5	Obsolete
TPS7A2601DRVR	Texas Instruments	1.24V to 17.4V (Adjustable)	500mA	18V	0.55V @ 500mA	5µA	6-WSON (2x2)	Active

Engineering Selection Recommendations

Direct Replacement (Preferred): TPS73030DBVR is the active equivalent of TPS73030DBVT with identical electrical specifications. This part is currently in active production status with 20,100 units in stock, making it the primary choice for new designs and production continuity.

Automotive Grade Alternative: TPS79330QDBVRQ1 provides equivalent performance with automotive qualification (AEC-Q100) and is suitable for applications requiring automotive-grade components. This part is in Last Time Buy status with limited availability (1,900 units).

Higher Current Capability: MIC5319-3.0YD5-TR and RT9193-30GB offer increased output current (500mA and 300mA respectively) while maintaining 3V fixed output and SOT-23-5 packaging. These are suitable when higher current capacity is required without changing the package footprint.

Lower Quiescent Current: S-1137D30-M5T1U features exceptionally low quiescent current (1µA) for battery-powered applications, though it is obsolete. LP2985AIM5-3.0/NOPB and LP2985AIM5X-3.0/NOPB offer lower quiescent current (95µA) with active product status and higher maximum input voltage (16V).

Adjustable Output Option: TPS7A2601DRVR is a manufacturer-recommended alternative with adjustable output voltage (1.24V to 17.4V), higher current capability (500mA), and active product status. This part requires external resistors for 3V output configuration and uses a different package (6-WSON).

All substitute parts listed maintain RoHS3 compliance and operate across the -40°C to 125°C temperature range.

Frequently Asked Questions (FAQ)

Q: Can I use TPS73030DBVR as a direct replacement for TPS73030DBVT?

A: Yes. TPS73030DBVR is the active production equivalent with identical electrical specifications, output voltage, current rating, and SOT-23-5 packaging. The only difference is product status (active vs. obsolete) and packaging format (cut tape vs. tape & reel).

Q: What is the difference between SOT-23-5 and TSOT-23-5 packages?

A: TSOT-23-5 is a thin variant of SOT-23-5 with reduced height. Both packages are mechanically and electrically compatible for PCB assembly. Verify PCB design clearances if switching between standard and thin variants.

Q: Can I use MIC5319-3.0YD5-TR instead of TPS73030DBVT?

A: Yes, if your application can accommodate higher output current (500mA vs. 200mA). The 3V output voltage, input voltage range (5.5V max), operating temperature, and SOT-23-5 packaging are compatible. The TSOT-23-5 package is a thin variant of SOT-23-5.

Q: Why would I choose LP2985AIM5-3.0/NOPB over TPS73030DBVR?

A: LP2985AIM5-3.0/NOPB offers lower quiescent current (95µA vs. 250µA) and higher maximum input voltage (16V vs. 5.5V). Choose this part for applications requiring extended input voltage range or ultra-low standby power consumption. Output current is reduced to 150mA.

Q: Is TPS7A2601DRVR a suitable replacement?

A: TPS7A2601DRVR is functionally suitable but requires design modification. It is an adjustable output regulator requiring external resistors to set 3V output. It offers higher current (500mA), higher input voltage (18V), and uses a different package (6-WSON). Use only if your design can accommodate these changes.

Q: What protection features are common across all substitutes?

A: All listed substitutes include over-current and over-temperature protection. The original TPS73030DBVT additionally includes reverse polarity and UVLO protection. Verify that substitute parts include required protection features for your specific application.

Q: Can I use S-1137D30-M5T1U for new designs?

A: S-1137D30-M5T1U is obsolete and not recommended for new designs. Use active alternatives such as TPS73030DBVR, MIC5319-3.0YD5-TR, or RT9193-30GB instead.

Q: What is the impact of different dropout voltages on my design?

A: Dropout voltage determines the minimum input-to-output voltage differential required for regulation. TPS73030DBVT has 0.21V dropout at 200mA. Higher dropout voltage parts (such as MIC5305-3.0YD5-TR at 0.85V) require larger input voltage margins. Verify your power supply headroom before substitution.

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