REG102GA-3.3G4 Equivalent & Substitute Parts

Part Overview

The REG102GA-3.3G4 is a linear voltage regulator IC from Texas Instruments designed for positive fixed 3.3V output applications with 250mA current capacity in SOT-223-6 surface mount packaging. This part is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. The regulator features integrated over-current and over-temperature protection with enable control functionality.

Substiute Parts

REG102GA-3.3G4

Texas InstrumentsIn Stock: 1104REG102GA-3.3G4 Datasheet

Current PartRFQ

TPS7A2533DRVR

Texas InstrumentsIn Stock: 540443TPS7A2533DRVR Datasheet

MFR RecommendedRFQ

REG102GA-3.3

Texas InstrumentsIn Stock: 1583REG102GA-3.3 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the REG102GA-3.3G4 are selected based on the following electrical and mechanical compatibility criteria:

Primary Substitution Criteria:

• Fixed 3.3V output voltage configuration
• Positive output configuration
• Single regulator topology
• Surface mount technology
• Over-current and over-temperature protection
• Enable control functionality
• ROHS3 compliance

Acceptable Parameter Variations:

• Output current capacity equal to or greater than 250mA
• Input voltage maximum equal to or greater than 10V
• Dropout voltage equal to or less than 0.27V at rated current
• Operating temperature range encompassing -40°C to 85°C minimum
• Package form factor compatible with SOT-223-6 footprint or equivalent

Parameter Comparison

Engineering Selection Recommendations

TPS7A2533DRVR is the primary recommended substitute for new designs. This part is in active production status with superior electrical characteristics including higher output current capacity (300mA vs 250mA), lower dropout voltage (0.21V vs 0.27V), significantly reduced quiescent current (4.5 µA vs 500 µA), and extended operating temperature range (-40°C to 125°C vs -40°C to 85°C). The 6-WSON package requires PCB layout modification from the original SOT-223-6 footprint. All compliance certifications (ROHS3, REACH Unaffected, EAR99) are maintained.

REG102GA-3.3 serves as a direct electrical and mechanical equivalent with identical electrical specifications and SOT-223-6 packaging. This part is designated Last Time Buy status, indicating limited availability for future procurement. Selection of this substitute is appropriate only when PCB layout constraints prohibit package migration to the TPS7A2533DRVR.

Frequently Asked Questions (FAQ)

Q: Can TPS7A2533DRVR directly replace REG102GA-3.3G4 without PCB modifications?

A: No. The TPS7A2533DRVR uses 6-WSON (2x2) packaging while the REG102GA-3.3G4 uses SOT-223-6. PCB layout and footprint changes are required. The REG102GA-3.3 provides identical packaging for direct substitution.

Q: What are the key electrical advantages of TPS7A2533DRVR over the original part?

A: The TPS7A2533DRVR provides 300mA output current (vs 250mA), 0.21V dropout voltage (vs 0.27V), 4.5 µA quiescent current (vs 500 µA), and -40°C to 125°C operating range (vs -40°C to 85°C). These improvements reduce power dissipation and expand thermal operating margins.

Q: Is REG102GA-3.3 suitable for long-term production use?

A: REG102GA-3.3 is designated Last Time Buy status, indicating this part will reach end-of-life. While currently available with 1478 pieces in stock, this substitute is appropriate only for near-term production needs. TPS7A2533DRVR is recommended for designs requiring extended production lifecycles.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. Both TPS7A2533DRVR and REG102GA-3.3 maintain ROHS3 compliance status identical to the original REG102GA-3.3G4.

Q: What is the impact of the TPS7A2533DRVR's additional Power Good control feature?

A: The Power Good output on TPS7A2533DRVR provides system monitoring capability not present in the original part. This feature is optional and does not affect basic regulator functionality if unused in the application circuit.