TPS73028DBVR Equivalent & Substitute Parts

Part Overview

The TPS73028DBVR is a linear voltage regulator IC from Texas Instruments designed for positive fixed 2.8V output applications. This device delivers 200mA output current in a compact SOT-23-5 surface mount package. 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 various application requirements.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Part Number	TPS73028DBVR
Output Voltage	2.8V Fixed
Output Current	200mA
Input Voltage (Max)	5.5V
Dropout Voltage	0.21V @ 200mA
Quiescent Current	250 µA
Package	SOT-23-5 (SC-74A)
Operating Temperature	-40°C to 125°C
Protection Features	Over Current, Over Temperature, Reverse Polarity, UVLO
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following critical parameters: output voltage (2.8V fixed), package type (SOT-23-5 or TSOT-23-5), input voltage rating (5.5V maximum), operating temperature range (-40°C to 125°C), and output current capability. Parts are grouped into three categories:

Parametric Equivalents maintain identical electrical specifications to the TPS73028DBVR, including 200mA output current, 0.21V dropout voltage, and 250 µA quiescent current. These parts are direct functional replacements.

Manufacturer Recommended Substitutes offer enhanced performance characteristics such as higher output current (300mA or 500mA), lower quiescent current, or improved PSRR, while maintaining the 2.8V output voltage and compatible packaging.

Cross-Manufacturer Alternatives provide equivalent functionality from different manufacturers (STMicroelectronics, Microchip Technology, Richtek USA Inc.) with comparable electrical performance and package compatibility.

Parameter Comparison

Part Number	Manufacturer	Output Current	Dropout Voltage	Quiescent Current	Package	Product Status
TPS73028DBVR	Texas Instruments	200mA	0.21V @ 200mA	250 µA	SOT-23-5	Last Time Buy
TPS73028DBVT	Texas Instruments	200mA	0.21V @ 200mA	250 µA	SOT-23-5	Last Time Buy
TPS79328QDBVRQ1	Texas Instruments	200mA	0.2V @ 200mA	220 µA	SOT-23-5	Active (Automotive)
TLV74328PDBVR	Texas Instruments	300mA	0.29V @ 300mA	60 µA	SOT-23-5	Active
LDK120M28R	STMicroelectronics	200mA	0.3V @ 200mA	60 µA	SOT-23-5	Active
MIC5301-2.8YD5-TR	Microchip Technology	150mA	0.1V @ 150mA	120 µA	TSOT-23-5	Active
MIC5305-2.8YD5-TR	Microchip Technology	150mA	Not Specified	150 µA	TSOT-23-5	Active
MIC5319-2.8YD5-TR	Microchip Technology	500mA	0.4V @ 500mA	150 µA	TSOT-23-5	Active
MIC5323-2.8YD5-TR	Microchip Technology	300mA	0.22V @ 300mA	150 µA	TSOT-23-5	Active
RT9193-28GB	Richtek USA Inc.	300mA	0.3V @ 300mA	130 µA	SOT-23-5	Active
RT9193-28GJ5	Richtek USA Inc.	300mA	0.3V @ 300mA	130 µA	TSOT-23-5	Active

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications): TPS73028DBVT is a parametric equivalent offering identical electrical performance and protection features. Both parts share Last Time Buy status, making this selection suitable for immediate design transitions.

For Active Product Status: TPS79328QDBVRQ1 provides equivalent 200mA output current with Active product status and automotive-grade qualification (AEC-Q100). This part is recommended for designs requiring long-term availability and automotive compliance.

For Enhanced Current Capability: TLV74328PDBVR (300mA) and MIC5323-2.8YD5-TR (300mA) offer higher output current while maintaining 2.8V output voltage. Both are Active products suitable for applications requiring additional current margin.

For Cross-Manufacturer Alternatives: LDK120M28R (STMicroelectronics) maintains 200mA output current with Active status. Microchip Technology options (MIC5301, MIC5305, MIC5319, MIC5323) provide various current ratings with TSOT-23-5 packaging. Richtek USA Inc. RT9193 series offers 300mA output in both SOT-23-5 and TSOT-23-5 packages.

For Compliance Requirements: All listed substitutes maintain ROHS3 compliance, REACH Unaffected status, and EAR99 ECCN classification, matching the original part's regulatory profile.

Frequently Asked Questions (FAQ)

Q: Can TPS73028DBVT be used as a direct replacement for TPS73028DBVR? A: Yes. TPS73028DBVT is a parametric equivalent with identical output voltage (2.8V), output current (200mA), dropout voltage (0.21V @ 200mA), quiescent current (250 µA), and package (SOT-23-5). Both parts share identical protection features and operating temperature range.

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 mounting. Verify PCB layout clearances and thermal requirements before substitution.

Q: Why would I choose TLV74328PDBVR over TPS73028DBVR? A: TLV74328PDBVR provides 300mA output current compared to 200mA, offering additional current margin for power-hungry applications. It maintains 2.8V output voltage and Active product status, ensuring long-term availability.

Q: Are Microchip Technology MIC53xx parts suitable replacements? A: Microchip parts maintain 2.8V output voltage and compatible packaging. However, output current varies: MIC5301/MIC5305 provide 150mA, MIC5319 provides 500mA, and MIC5323 provides 300mA. Select based on application current requirements.

Q: What is the advantage of TPS79328QDBVRQ1? A: TPS79328QDBVRQ1 is automotive-grade (AEC-Q100 qualified) with Active product status, ensuring long-term supply availability. It maintains 200mA output current with slightly improved dropout voltage (0.2V) and lower quiescent current (220 µA).

Q: Can I use a higher current-rated part in place of TPS73028DBVR? A: Yes, provided the application circuit does not require the exact 200mA specification. Higher-rated parts (300mA or 500mA) are backward compatible and will function correctly in circuits designed for lower current. Verify thermal performance and PCB layout.

Q: Are all substitutes RoHS3 compliant? A: Yes. All listed substitute parts maintain ROHS3 compliance and REACH Unaffected status, matching the original part's environmental and regulatory requirements.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message