TPS73633DCQ Equivalent & Substitute Parts

Part Overview

The TPS73633DCQ is a linear voltage regulator IC from Texas Instruments designed for positive fixed 3.3V output applications with 400mA current capacity in a SOT-223-6 surface mount package. This device provides regulated power with integrated protection features including over-current, over-temperature, and reverse polarity protection. The main part is currently in Last Time Buy status, making identification of suitable substitutes essential for ongoing design support and production continuity.

Substiute Parts

TPS73633DCQ

Texas InstrumentsIn Stock: 98964TPS73633DCQ Datasheet

Current PartRFQ

TPS73633DCQR

Texas InstrumentsIn Stock: 16387TPS73633DCQR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the TPS73633DCQ is determined by strict equivalence across the following critical parameters:

• Fixed output voltage of 3.3V
• Output current rating of 400mA minimum
• Maximum input voltage of 5.5V or greater
• Maximum voltage dropout of 0.2V or less at rated current
• SOT-223-6 package compatibility
• Identical protection feature set (over-current, over-temperature, reverse polarity)
• Operating temperature range of -40°C to 125°C or wider
• Surface mount mounting type

The TPS73633DCQR meets all substitution criteria as a direct equivalent, differing only in packaging format (Tape & Reel versus Tube) and product status (Active versus Last Time Buy).

Parameter Comparison

Engineering Selection Recommendations

The TPS73633DCQR is a direct functional equivalent to the TPS73633DCQ with identical electrical specifications and package footprint. Selection between these parts should be based on:

Packaging Requirements: The TPS73633DCQ is supplied in Tube packaging, while the TPS73633DCQR is supplied in Tape & Reel format. Choose based on your procurement and assembly process requirements.

Product Lifecycle Status: The TPS73633DCQ is in Last Time Buy status, indicating limited future availability. The TPS73633DCQR maintains Active status with ongoing manufacturer support and availability, making it the preferred choice for new designs and long-term production requirements.

Compliance: Both parts maintain ROHS3 compliance, REACH Unaffected status, and identical regulatory classifications (ECCN: EAR99, HTSUS: 8542.39.0001).

Frequently Asked Questions (FAQ)

Q: Can TPS73633DCQR replace TPS73633DCQ in existing designs?

A: Yes. The TPS73633DCQR is electrically and mechanically identical to the TPS73633DCQ. Both use the same SOT-223-6 package with identical pinout, electrical performance, and protection features. The only differences are packaging format (Tube versus Tape & Reel) and product lifecycle status.

Q: What is the difference between Tube and Tape & Reel packaging?

A: Tube packaging supplies components in plastic tubes suitable for manual handling and small-quantity applications. Tape & Reel packaging supplies components on continuous tape wound on reels, optimized for automated assembly equipment. Both formats contain identical components with the same electrical and mechanical specifications.

Q: Why is the TPS73633DCQ in Last Time Buy status?

A: Last Time Buy status indicates the manufacturer is discontinuing this specific packaging variant. The TPS73633DCQR in Tape & Reel format remains in Active production status, providing continuity for ongoing applications.

Q: Are there any electrical performance differences between these parts?

A: No. Both parts deliver identical electrical performance: 3.3V fixed output, 400mA output current, 0.2V maximum dropout voltage, 550 µA quiescent current, and identical protection features across the full -40°C to 125°C operating range.

Q: Which part should I specify for new designs?

A: Specify the TPS73633DCQR for new designs. It maintains Active product status with ongoing manufacturer support and availability, while the TPS73633DCQ is in Last Time Buy status with limited future supply.