TPS73025DBVT Equivalent & Substitute Parts

Part Overview

The TPS73025DBVT is a linear voltage regulator IC from Texas Instruments designed for positive fixed 2.5V output at 200mA in a SOT-23-5 surface mount package. This device is classified as Last Time Buy, indicating discontinued production with limited remaining inventory. Equivalent and substitute parts are necessary to ensure design continuity and long-term supply chain reliability for applications requiring 2.5V regulated output with comparable electrical and mechanical specifications.

Key Parameters

Parameter	Value
Output Voltage (Fixed)	2.5V
Output Current	200mA
Input Voltage (Max)	5.5V
Dropout Voltage (Max)	0.21V @ 200mA
Quiescent Current	250 µA
Package	SOT-23-5 (SC-74A)
Operating Temperature	-40°C to 125°C
Control Features	Enable
Protection Features	Over Current, Over Temperature, Reverse Polarity, UVLO

Substitute Part Grouping Explanation

Substitution eligibility for the TPS73025DBVT is determined by the following critical parameters:

Primary Substitution Criteria:

Output voltage: 2.5V fixed
Package type: SOT-23-5 surface mount
Output current capability: minimum 200mA (or lower if application permits)
Input voltage rating: 5.5V or higher
Operating temperature range: -40°C to 125°C
Control and protection features: Enable function and thermal/current protection

Substitution Categories:

Parametric Equivalents maintain identical electrical specifications and are direct pin-compatible replacements. These include TPS73025DBVR and TPS73025DBVTG4, which differ only in packaging format (Tape & Reel vs. Cut Tape).

Manufacturer Recommended Substitutes meet the core functional requirements but may have reduced output current (150mA) or different protection feature sets. These include LP3985IM5-2.5/NOPB, LP3985IM5X-2.5/NOPB, MIC5301-2.5YD5-TR, and RT9193-25GB variants. These parts maintain 2.5V output and SOT-23-5 packaging but operate within different current and performance envelopes.

Automotive Grade Alternative includes TPS79325DBVRQ1, which provides AEC-Q100 qualification and automotive-grade reliability with identical 200mA output current.

Parameter Comparison

Part Number	Manufacturer	Output Current	Input Voltage (Max)	Dropout Voltage	Quiescent Current	Package	Product Status
TPS73025DBVT	Texas Instruments	200mA	5.5V	0.21V @ 200mA	250 µA	SOT-23-5	Last Time Buy
TPS73025DBVR	Texas Instruments	200mA	5.5V	0.21V @ 200mA	250 µA	SOT-23-5	Active
TPS73025DBVTG4	Texas Instruments	200mA	5.5V	0.21V @ 200mA	250 µA	SOT-23-5	Last Time Buy
TPS79325DBVRQ1	Texas Instruments	200mA	5.5V	Not specified	220 µA	SOT-23-5	Active
LP3985IM5-2.5/NOPB	Texas Instruments	150mA	6V	0.1V @ 150mA	150 µA	SOT-23-5	Active
LP3985IM5X-2.5/NOPB	Texas Instruments	150mA	6V	0.1V @ 150mA	150 µA	SOT-23-5	Active
MIC5301-2.5YD5-TR	Microchip Technology	150mA	5.5V	0.1V @ 150mA	120 µA	TSOT-23-5	Active
RT9193-25GB	Richtek USA Inc.	300mA	5.5V	Not specified	130 µA	SOT-23-5	Active
RT9193-25GJ5	Richtek USA Inc.	300mA	5.5V	Not specified	130 µA	TSOT-23-5	Active

Engineering Selection Recommendations

First Priority: Parametric Equivalents

TPS73025DBVR is the recommended primary substitute. It maintains identical electrical specifications (200mA output, 0.21V dropout, 250 µA quiescent current) and is currently in Active product status with higher inventory availability (14,800 pcs). The only difference is packaging format (Tape & Reel vs. Cut Tape), which does not affect electrical performance or PCB assembly compatibility.

Second Priority: Automotive Grade Alternative

TPS79325DBVRQ1 provides identical 200mA output current and electrical performance with AEC-Q100 automotive qualification. This part is suitable for applications requiring automotive-grade reliability and is currently Active with 916 pcs in stock. Quiescent current is slightly lower at 220 µA.

Third Priority: Higher Current Capability

RT9193-25GB and RT9193-25GJ5 from Richtek provide 300mA output current, exceeding the original 200mA specification. These parts are suitable for applications where additional current headroom is beneficial. RT9193-25GB uses standard SOT-23-5 packaging, while RT9193-25GJ5 uses TSOT-23-5 (thin variant). Both are Active with substantial inventory.

Fourth Priority: Reduced Current Designs

LP3985IM5-2.5/NOPB, LP3985IM5X-2.5/NOPB, and MIC5301-2.5YD5-TR provide 150mA output current. These are suitable only for applications where 150mA output is sufficient. LP3985 variants offer improved dropout voltage (0.1V) and lower quiescent current (150 µA). MIC5301-2.5YD5-TR uses TSOT-23-5 packaging and offers the lowest quiescent current (120 µA) with superior PSRR performance (75dB ~ 50dB).

All recommended substitutes maintain RoHS3 compliance, MSL Level 1 (Unlimited), and -40°C to 125°C operating temperature range.

Frequently Asked Questions (FAQ)

Q: Can TPS73025DBVR be used as a direct replacement for TPS73025DBVT?

A: Yes. TPS73025DBVR is a parametric equivalent with identical electrical specifications. The difference is packaging format: TPS73025DBVR is supplied in Tape & Reel format while TPS73025DBVT is Cut Tape. Both are SOT-23-5 surface mount packages with identical pin configuration and electrical performance.

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. TSOT-23-5 is preferred in space-constrained applications. Parts using TSOT-23-5 include MIC5301-2.5YD5-TR and RT9193-25GJ5.

Q: Can I use RT9193-25GB (300mA) instead of TPS73025DBVT (200mA)?

A: Yes, if your application requires 200mA or less. RT9193-25GB provides higher current capability (300mA) and is suitable for designs needing additional headroom. All other electrical parameters (2.5V output, 5.5V input max, -40°C to 125°C operation) are compatible.

Q: What is the advantage of LP3985IM5-2.5/NOPB over TPS73025DBVT?

A: LP3985IM5-2.5/NOPB offers lower dropout voltage (0.1V vs. 0.21V) and lower quiescent current (150 µA vs. 250 µA), resulting in improved efficiency. However, output current is reduced to 150mA. This part is suitable only for applications where 150mA output is sufficient.

Q: Is TPS79325DBVRQ1 suitable for automotive applications?

A: Yes. TPS79325DBVRQ1 carries AEC-Q100 automotive qualification and is designed for automotive-grade reliability. It maintains identical 200mA output current and 2.5V output voltage as the original TPS73025DBVT.

Q: What does "Last Time Buy" status mean for TPS73025DBVT?

A: Last Time Buy indicates the manufacturer has discontinued production. Existing inventory is limited and will not be replenished. Designs using TPS73025DBVT should transition to an active substitute such as TPS73025DBVR or TPS79325DBVRQ1 to ensure long-term supply availability.

Q: Can I use MIC5301-2.5YD5-TR in a design originally specified for TPS73025DBVT?

A: MIC5301-2.5YD5-TR is compatible if your application requires 150mA or less output current. It offers superior quiescent current performance (120 µA) and PSRR (75dB ~ 50dB). The TSOT-23-5 package is mechanically compatible with standard SOT-23-5 PCB layouts. Verify that 150mA output current meets your design requirements before substitution.

Q: What protection features should I verify when selecting a substitute?

A: The original TPS73025DBVT includes Over Current, Over Temperature, Reverse Polarity, and Under Voltage Lockout (UVLO) protection. Most substitutes include Over Current and Over Temperature protection. TPS73025DBVR, TPS73025DBVTG4, and TPS79325DBVRQ1 maintain all four protection features. Verify protection feature requirements for your specific application before selecting a substitute with reduced protection capabilities.

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