TPS76818QPWPR Equivalent & Substitute Parts

Part Overview

The TPS76818QPWPR is a linear voltage regulator IC from Texas Instruments designed for positive fixed 1.8V output applications. This Surface Mount device delivers 1A output current in a 20-PowerTSSOP package and is classified as Active product status. The regulator integrates Enable and Power Good control features alongside Over Current, Over Temperature, and Reverse Polarity protection. Finding equivalent substitute parts becomes necessary when addressing supply chain constraints, lead time requirements, or specific qualification needs for automotive and industrial applications.

Substiute Parts

TPS76818QPWPR

Texas InstrumentsIn Stock: 4670TPS76818QPWPR Datasheet

Current PartRFQ

TPS76818QPWPRQ1

Texas InstrumentsIn Stock: 3280TPS76818QPWPRQ1 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TPS76818QPWPR is determined by strict alignment across the following critical parameters:

• Output voltage specification (1.8V fixed)
• Output current capability (1A minimum)
• Maximum input voltage rating (10V)
• Quiescent current performance (125 µA)
• PSRR specification (60dB at 1kHz)
• Control feature set (Enable and Power Good functions)
• Protection mechanisms (Over Current, Over Temperature, Reverse Polarity)
• Operating temperature range (-40°C ~ 125°C)
• Package form factor (20-PowerTSSOP)
• Surface Mount mounting compatibility
• RoHS3 compliance status

The TPS76818QPWPRQ1 qualifies as a parametric equivalent substitute based on identical electrical specifications and package configuration. The primary distinction lies in automotive-grade qualification and enhanced moisture sensitivity classification.

Parameter Comparison

Engineering Selection Recommendations

Both the TPS76818QPWPR and TPS76818QPWPRQ1 maintain Active product status and full RoHS3 compliance. The TPS76818QPWPRQ1 carries automotive-grade qualification under AEC-Q100 standard, making it suitable for applications requiring automotive reliability standards. The commercial-grade TPS76818QPWPR is appropriate for industrial and consumer applications without automotive qualification requirements. Selection between these parts should be based on application-specific compliance mandates and supply availability rather than electrical performance differences.

Frequently Asked Questions (FAQ)

Q: Are the TPS76818QPWPR and TPS76818QPWPRQ1 electrically interchangeable?

A: Yes. Both parts deliver identical electrical specifications including 1.8V fixed output, 1A output current, 125 µA quiescent current, and 60dB PSRR at 1kHz. The functional performance in circuit operation is equivalent.

Q: What is the primary difference between these two part numbers?

A: The TPS76818QPWPRQ1 includes automotive-grade qualification (AEC-Q100) and carries a higher MSL rating (3 versus 2). The commercial-grade TPS76818QPWPR is suitable for non-automotive applications.

Q: Can I use the TPS76818QPWPRQ1 as a direct replacement for the TPS76818QPWPR?

A: Yes. The automotive-qualified variant can be used in commercial applications. Substitution in the reverse direction (commercial for automotive) depends on application requirements and qualification mandates.

Q: Are both parts available in the same package configuration?

A: Yes. Both parts use the 20-PowerTSSOP package with identical 0.173" width (4.40mm) and Surface Mount mounting type, ensuring PCB layout compatibility.

Q: What does the MSL rating difference indicate?

A: MSL 2 (1 Year) for the TPS76818QPWPR allows one year of dry storage before moisture absorption becomes a concern. MSL 3 (168 Hours) for the TPS76818QPWPRQ1 requires baking or reflow within 168 hours of package opening. This reflects different manufacturing and qualification processes for automotive-grade components.