TPS79225DBVT Equivalent & Substitute Parts

Part Overview

The TPS79225DBVT is a linear voltage regulator IC from Texas Instruments, delivering a fixed 2.5V output at 100mA in a SOT-23-5 surface mount package. This device is classified as Last Time Buy, indicating end-of-life status. Finding equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain flexibility, and support long-term product availability for applications requiring 2.5V regulation with 100mA output capability.

Key Parameters

Parameter	Value
Output Voltage (Fixed)	2.5V
Output Current	100mA
Input Voltage (Max)	5.5V
Package Type	SOT-23-5 (SC-74A)
Mounting Type	Surface Mount
Output Configuration	Positive Fixed
Control Features	Enable
Protection Features	Over Current, Over Temperature, Reverse Polarity, Under Voltage Lockout (UVLO)
Operating Temperature Range	-40°C to 85°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the TPS79225DBVT is determined by the following critical parameters: fixed 2.5V output voltage, positive output configuration, SOT-23-5 package compatibility, surface mount technology, and enable control feature. Substitute parts must maintain these core electrical and mechanical specifications to ensure direct replacement capability.

Substitute parts are grouped into two categories:

Parametric Equivalent (Direct Replacement): TPS79225DBVR matches all electrical specifications and protection features of the main part, differing only in packaging format (Cut Tape vs. Tape & Reel).

Functional Equivalents (Higher Current Capability): TPS7A2025PDBVR, LDK130M25R, MIC5255 series, RT9193 series, and S-1137A25-M5T1U provide 2.5V fixed output in SOT-23-5 packages with enhanced current ratings (150mA to 300mA), enabling use in applications requiring higher output current while maintaining voltage regulation and protection features.

Alternative Package Options: MIC5301-2.5YD5-TR and RT9193-25GJ5 offer TSOT-23-5 (thin SOT-23-5) packaging for space-constrained designs while maintaining 2.5V output and enhanced current capability.

Parameter Comparison

Part Number	Manufacturer	Output Voltage	Output Current	Input Voltage (Max)	Package	Quiescent Current	Operating Temp Range	Product Status
TPS79225DBVT	Texas Instruments	2.5V	100mA	5.5V	SOT-23-5	250 µA	-40°C to 85°C	Last Time Buy
TPS79225DBVR	Texas Instruments	2.5V	100mA	5.5V	SOT-23-5	250 µA	-40°C to 85°C	Last Time Buy
TPS7A2025PDBVR	Texas Instruments	2.5V	300mA	6V	SOT-23-5	15 µA	-40°C to 125°C	Active
LDK130M25R	STMicroelectronics	2.5V	300mA	5.5V	SOT-23-5	60 µA	-40°C to 125°C	Active
MIC5255-2.5YD5-TR	Microchip Technology	2.5V	150mA	6V	TSOT-23-5	150 µA	-40°C to 125°C	Active
MIC5255-2.5YM5-TR	Microchip Technology	2.5V	150mA	6V	SOT-23-5	150 µA	-40°C to 125°C	Active
MIC5301-2.5YD5-TR	Microchip Technology	2.5V	150mA	5.5V	TSOT-23-5	120 µA	-40°C to 125°C	Active
RT9193-25GB	Richtek USA Inc.	2.5V	300mA	5.5V	SOT-23-5	130 µA	-40°C to 125°C	Active
RT9193-25GJ5	Richtek USA Inc.	2.5V	300mA	5.5V	TSOT-23-5	130 µA	-40°C to 125°C	Active
S-1137A25-M5T1U	ABLIC Inc.	2.5V	300mA	5.5V	SOT-23-5	1 µA	-40°C to 85°C	Obsolete

Engineering Selection Recommendations

For Direct Replacement (No Design Changes): TPS79225DBVR is the parametric equivalent, maintaining identical electrical specifications and Last Time Buy status. This option requires no circuit modifications and preserves all protection features including reverse polarity protection.

For Active Product Status with Enhanced Performance: TPS7A2025PDBVR, LDK130M25R, RT9193-25GB, and MIC5255-2.5YM5-TR are all active products offering 2.5V output in standard SOT-23-5 packages. These parts provide higher output current capability (150mA to 300mA) and extended operating temperature ranges (-40°C to 125°C), supporting long-term supply chain continuity. All are ROHS3 compliant.

For Automotive Applications: LDK130M25R carries AEC-Q100 qualification and automotive-grade designation, suitable for automotive and harsh environment applications.

For Space-Constrained Designs: MIC5301-2.5YD5-TR and RT9193-25GJ5 offer TSOT-23-5 thin package options while maintaining 2.5V output and enhanced current ratings.

Avoid: S-1137A25-M5T1U is classified as Obsolete and should not be selected for new designs despite its ultra-low quiescent current specification.

Frequently Asked Questions (FAQ)

Q: Can TPS79225DBVR be used as a direct replacement for TPS79225DBVT?

A: Yes. TPS79225DBVR is a parametric equivalent with identical electrical specifications, output voltage, current rating, and protection features. The only difference is packaging format (Cut Tape vs. Tape & Reel). Both are Last Time Buy status.

Q: What is the key difference between the main part and higher-current substitutes?

A: The TPS79225DBVT is rated for 100mA output current. Substitutes such as TPS7A2025PDBVR, LDK130M25R, and RT9193-25GB provide 300mA output capability. These can replace the main part in applications requiring up to 300mA, but are not required for designs limited to 100mA or less.

Q: Are all substitute parts available in standard SOT-23-5 packaging?

A: Most substitutes are available in standard SOT-23-5 (SC-74A). MIC5255-2.5YD5-TR, MIC5301-2.5YD5-TR, and RT9193-25GJ5 are available in TSOT-23-5 (thin SOT-23-5) for space-constrained applications. Verify package selection before ordering.

Q: Which substitute parts are recommended for new designs?

A: TPS7A2025PDBVR, LDK130M25R, MIC5255-2.5YM5-TR, and RT9193-25GB are all active products with extended temperature ranges and ROHS3 compliance, making them suitable for new designs requiring long-term availability.

Q: Does the LDK130M25R have any special qualifications?

A: Yes. LDK130M25R is AEC-Q100 qualified and designated as automotive-grade, making it suitable for automotive and mission-critical applications.

Q: What is the significance of quiescent current differences among substitutes?

A: Quiescent current affects power consumption in standby or low-load conditions. S-1137A25-M5T1U has 1 µA quiescent current (ultra-low), while TPS7A2025PDBVR has 15 µA. For battery-powered or always-on applications, lower quiescent current reduces standby power drain. However, S-1137A25-M5T1U is obsolete and should not be selected.

Q: Can I use a substitute with higher input voltage rating?

A: Yes, if your circuit design operates within the substitute's input voltage range. For example, MIC5255 series parts accept up to 6V input versus 5.5V for the main part. This provides additional design margin but is not required if your input voltage is already within 5.5V limits.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant and REACH unaffected, meeting environmental and regulatory requirements equivalent to the main part.

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