REG102GA-2.5 Equivalent & Substitute Parts

Part Overview

The REG102GA-2.5 is a linear voltage regulator IC from Texas Instruments designed for positive fixed 2.5V output applications with 250mA current capacity in SOT-223-6 surface mount packaging. This device is classified as Last Time Buy, indicating end-of-life status. Finding equivalent substitute parts is necessary to ensure design continuity and maintain supply chain reliability for new production runs and long-term product support.

Key Parameters

Parameter	REG102GA-2.5
Manufacturer	Texas Instruments
Output Voltage (Fixed)	2.5V
Output Current	250mA
Input Voltage (Max)	10V
Voltage Dropout (Max)	0.27V @ 250mA
Quiescent Current	500 µA
Operating Temperature Range	-40°C ~ 85°C
Package	SOT-223-6
Product Status	Last Time Buy
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the REG102GA-2.5 is determined by the following critical parameters:

Fixed output voltage of 2.5V
Output current capability equal to or greater than 250mA
Input voltage rating compatible with 10V maximum specification
Surface mount technology with compatible pinout and thermal characteristics
Positive output configuration with fixed regulation type
Over current and over temperature protection features
ROHS3 compliance and EAR99 classification

The TPS7A2525DRVR meets these substitution criteria while offering enhanced specifications including higher output current (300mA), lower quiescent current (4.5 µA), improved dropout voltage (0.21V @ 300mA), and extended operating temperature range (-40°C ~ 125°C). The substitute maintains the same fixed 2.5V output voltage and protection feature set required for functional equivalence.

Parameter Comparison

Parameter	REG102GA-2.5	TPS7A2525DRVR	Notes
Manufacturer	Texas Instruments	Texas Instruments	Same manufacturer
Output Voltage (Fixed)	2.5V	2.5V	Identical specification
Output Current	250mA	300mA	Substitute provides higher capacity
Input Voltage (Max)	10V	18V	Substitute supports wider input range
Voltage Dropout (Max)	0.27V @ 250mA	0.21V @ 300mA	Substitute offers improved efficiency
Quiescent Current	500 µA	4.5 µA	Substitute significantly reduces standby power
PSRR	65dB (120Hz)	75dB ~ 52dB (10Hz ~ 1kHz)	Substitute provides broader frequency response
Operating Temperature Range	-40°C ~ 85°C	-40°C ~ 125°C	Substitute supports extended temperature range
Package Type	SOT-223-6	6-WSON (2x2)	Different package; PCB layout modification required
Product Status	Last Time Buy	Active	Substitute is in active production
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Both meet compliance requirements
MSL Rating	2 (1 Year)	1 (Unlimited)	Substitute has superior moisture handling

Engineering Selection Recommendations

The TPS7A2525DRVR is the manufacturer-recommended substitute for the REG102GA-2.5. Both devices are ROHS3 compliant and carry EAR99 classification, meeting regulatory requirements for equivalent component selection.

The substitute provides functional equivalence with performance enhancements across multiple parameters. The higher output current rating (300mA vs 250mA) ensures adequate headroom for existing designs. The improved dropout voltage and significantly reduced quiescent current deliver better power efficiency, particularly beneficial in battery-powered or low-power applications.

The extended operating temperature range (-40°C ~ 125°C) accommodates more demanding thermal environments compared to the original part's -40°C ~ 85°C specification.

Package transition from SOT-223-6 to 6-WSON (2x2) requires PCB layout modification and thermal management evaluation. The 6-WSON package includes an exposed pad for enhanced thermal dissipation, which may improve performance in thermally constrained applications.

Both devices maintain identical fixed 2.5V output voltage and include enable control and protection features (over current, over temperature), ensuring design compatibility at the functional level.

Frequently Asked Questions (FAQ)

Q: Can the TPS7A2525DRVR directly replace the REG102GA-2.5 without PCB modifications?

A: No. While functionally equivalent, the package change from SOT-223-6 to 6-WSON (2x2) requires PCB layout redesign. Pin assignments and thermal pad placement differ between packages. A new PCB layout is necessary for proper implementation.

Q: What are the key advantages of switching to the TPS7A2525DRVR?

A: The substitute offers higher output current (300mA), lower quiescent current (4.5 µA vs 500 µA), improved dropout voltage (0.21V vs 0.27V), extended operating temperature range (-40°C ~ 125°C), and active product status ensuring long-term availability.

Q: Are there any thermal considerations when using the 6-WSON package?

A: The 6-WSON package includes an exposed pad for thermal management. This design typically provides better heat dissipation than SOT-223-6, which may reduce junction temperature in high-current applications. Thermal pad connection to ground plane is recommended per device datasheet guidelines.

Q: Does the substitute maintain the same control features?

A: The TPS7A2525DRVR includes enable control and power good output, compared to enable-only control on the REG102GA-2.5. Both devices provide over current and over temperature protection. The additional power good feature does not affect backward compatibility.

Q: What is the significance of the MSL rating difference?

A: The REG102GA-2.5 has MSL 2 (1 Year) while the TPS7A2525DRVR has MSL 1 (Unlimited). This indicates the substitute has superior moisture resistance and longer shelf life without requiring special storage conditions.

Q: Are both parts ROHS3 compliant?

A: Yes. Both the REG102GA-2.5 and TPS7A2525DRVR are ROHS3 compliant and carry EAR99 classification, meeting regulatory requirements for equivalent component selection in compliant applications.

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