TPS73630DBVRG4 Equivalent & Substitute Parts

Part Overview

The TPS73630DBVRG4 is a linear voltage regulator IC from Texas Instruments designed for positive fixed 3V output applications with 400mA current capacity in a compact SOT-23-5 surface mount package. This part is discontinued at DiGi Electronics, necessitating identification of equivalent alternatives that maintain electrical and mechanical compatibility for ongoing production and repair applications.

Substiute Parts

TPS73630DBVRG4

Texas InstrumentsIn Stock: 1255TPS73630DBVRG4 Datasheet

Current PartRFQ

TPS73630DBVR

Texas InstrumentsIn Stock: 4476TPS73630DBVR Datasheet

Parametric EquivalentRFQ

TPS73630DBVT

Texas InstrumentsIn Stock: 2750TPS73630DBVT Datasheet

Parametric EquivalentRFQ

RT9193-30GB

Richtek USA Inc.In Stock: 20143RT9193-30GB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TPS73630DBVRG4 is determined by the following critical parameters:

Electrical Compatibility Requirements:

• Fixed output voltage of 3V
• Output current capability of 400mA or greater
• Maximum input voltage of 5.5V or higher
• Dropout voltage performance at rated current
• Quiescent current characteristics
• PSRR performance (100Hz to 10kHz range)
• Enable control feature
• Protection against over current and over temperature conditions

Mechanical Compatibility Requirements:

• SOT-23-5 package (SC-74A, SOT-753)
• Surface mount mounting type
• Operating temperature range of -40°C to 125°C or wider

Compliance Requirements:

• ROHS3 compliance
• REACH unaffected status

Substitute parts are grouped into two categories: parametric equivalents from Texas Instruments (TPS73630DBVR, TPS73630DBVT) that share identical electrical specifications, and manufacturer-recommended alternatives (RT9193-30GB) that meet functional requirements with acceptable parameter variations.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Parametric Equivalents):

TPS73630DBVR and TPS73630DBVT are direct parametric equivalents of the TPS73630DBVRG4. Both parts maintain identical electrical specifications including 400mA output current, 0.2V dropout voltage, and 550 µA quiescent current. TPS73630DBVR is currently in active product status with 4400 units in stock, making it the preferred choice for new designs and production continuity. TPS73630DBVT is designated as Last Time Buy with 2700 units available, suitable for near-term requirements but not recommended for long-term commitments.

Alternative Substitute (Manufacturer Recommended):

RT9193-30GB from Richtek USA Inc. is a manufacturer-recommended alternative that meets functional requirements with documented parameter variations. This part delivers 300mA output current versus the original 400mA specification, with increased dropout voltage of 0.3V at rated current. The RT9193-30GB offers superior PSRR performance (70dB ~ 50dB) and significantly lower quiescent current (130 µA), providing advantages in noise-sensitive and battery-powered applications. However, the reduced current capacity and higher MSL rating (3 versus 1) require circuit-level evaluation for compatibility.

All substitute parts maintain SOT-23-5 package compatibility, ROHS3 compliance, and -40°C to 125°C operating temperature range.

Frequently Asked Questions (FAQ)

Q: Can TPS73630DBVR be used as a direct replacement for TPS73630DBVRG4?

A: Yes. TPS73630DBVR is a parametric equivalent with identical electrical specifications. The only difference is product status (Active versus Discontinued) and packaging format (Cut Tape & Digi-Reel versus the original packaging). No circuit modifications are required.

Q: What is the difference between TPS73630DBVR and TPS73630DBVT?

A: Both parts are parametric equivalents with identical electrical performance. The distinction is product lifecycle status: TPS73630DBVR is Active with higher inventory availability, while TPS73630DBVT is Last Time Buy with limited stock. For new designs, TPS73630DBVR is recommended.

Q: Can RT9193-30GB replace the TPS73630DBVRG4 in all applications?

A: RT9193-30GB is functionally compatible but with parameter differences that require application-level assessment. The 300mA output current is 25% lower than the original 400mA specification. Applications requiring the full 400mA output cannot use this substitute without circuit redesign. The improved PSRR and lower quiescent current make it suitable for noise-sensitive or low-power standby applications.

Q: Are all substitute parts available in the same package?

A: Yes. All substitute parts use the SOT-23-5 package (SC-74A, SOT-753), ensuring mechanical and pinout compatibility without PCB modifications.

Q: What is the MSL rating difference, and does it matter?

A: TPS73630DBVRG4, TPS73630DBVR, and TPS73630DBVT have MSL 1 (Unlimited moisture sensitivity), while RT9193-30GB has MSL 3 (168 hours). MSL 3 requires controlled storage conditions and limits shelf life after package opening. For high-volume production with extended lead times, MSL 1 parts are preferred.

Q: Which substitute should be selected for new production designs?

A: TPS73630DBVR is the recommended choice for new designs. It maintains full parametric equivalence, is in active product status with robust inventory, and carries MSL 1 rating for unrestricted handling.