TPS79301QDBVRCT Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The TPS79301QDBVRCT is a linear voltage regulator IC from Texas Instruments' NanoStar™ series, designed for positive adjustable output applications with 200mA current capability in a compact SOT-23-6 surface mount package. This device provides regulated power management with integrated protection features including over-current, over-temperature, reverse-current, and under-voltage lockout functionality.

The TPS79301QDBVRCT carries a Last Time Buy product status, indicating end-of-life designation. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support long-term product availability for applications currently utilizing this regulator.

Substiute Parts

TPS79301QDBVRCT

Texas InstrumentsIn Stock: 1016TPS79301QDBVRCT Datasheet

Current PartRFQ

TPS79301DBVRQ1

Texas InstrumentsIn Stock: 17315TPS79301DBVRQ1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TPS79301QDBVRCT is determined by strict alignment across the following critical parameters:

Electrical Compatibility Requirements:

• Output configuration must be Positive
• Output type must be Adjustable
• Single regulator configuration (1 output)
• Input voltage maximum of 5.5V or greater
• Output voltage range minimum of 1.22V or lower, maximum of 5.5V or greater
• Output current capability of 200mA or greater
• Quiescent current of 220 µA or lower
• PSRR specification of 70dB or greater at 100Hz

Mechanical & Environmental Compatibility:

• Surface mount mounting type
• SOT-23-6 package configuration
• Operating temperature range of -40°C to 125°C or wider
• RoHS3 compliance
• MSL rating of 1 (Unlimited)

Functional Feature Requirements:

• Enable control feature (mandatory)
• Over-current protection (mandatory)
• Over-temperature protection (mandatory)
• Under-voltage lockout protection (mandatory)

The TPS79301DBVRQ1 meets all substitution criteria as a direct equivalent, with automotive-grade qualification and active product status providing enhanced supply chain assurance.

Parameter Comparison

Engineering Selection Recommendations

The TPS79301DBVRQ1 is the primary substitute for the TPS79301QDBVRCT. Both devices share identical electrical specifications, package configuration, and protection feature sets. The TPS79301DBVRQ1 offers the advantage of active product status, ensuring continued availability and manufacturing support. Additionally, the automotive-grade designation and AEC-Q100 qualification of the TPS79301DBVRQ1 provide enhanced reliability documentation suitable for applications requiring automotive or high-reliability standards.

For applications with no automotive requirements, the TPS79301DBVRQ1 remains fully compatible with existing TPS79301QDBVRCT designs without circuit modification. The transition from Last Time Buy to Active status eliminates supply discontinuity risk.

Frequently Asked Questions (FAQ)

Q: Can the TPS79301DBVRQ1 directly replace the TPS79301QDBVRCT in existing designs?

A: Yes. Both devices are pin-compatible in SOT-23-6 packaging and share identical electrical specifications including input/output voltage ranges, output current capability, quiescent current, and PSRR performance. No circuit redesign is required.

Q: What is the significance of the automotive grade designation on the TPS79301DBVRQ1?

A: The automotive grade and AEC-Q100 qualification indicate the device has undergone additional reliability testing and quality assurance protocols specific to automotive applications. This does not restrict use in non-automotive applications; it provides additional documentation of device robustness.

Q: Are there any control feature differences between these devices?

A: The TPS79301QDBVRCT includes both Current Limit and Enable control features. The TPS79301DBVRQ1 specifies Enable control. Both devices include identical protection features: over-current, over-temperature, and under-voltage lockout. Verify specific control feature requirements against application schematics before selection.

Q: Why is the TPS79301QDBVRCT designated Last Time Buy?

A: Last Time Buy status indicates the manufacturer has discontinued active production. The TPS79301DBVRQ1 represents the active product line continuation, ensuring long-term supply availability and manufacturing support.

Q: Are packaging and moisture sensitivity identical?

A: Yes. Both devices use SOT-23-6 surface mount packaging with MSL rating of 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.