TPS70302PWPR Equivalent & Substitute Parts

Part Overview

The TPS70302PWPR is a linear voltage regulator IC from Texas Instruments designed for positive adjustable output applications. This dual-output regulator delivers 1A and 2A output currents with adjustable voltage ranging from 1.22V to 5.5V. The device is classified as Last Time Buy, indicating end-of-life status. Alternative components are necessary for new designs and ongoing production requirements where continued availability cannot be guaranteed.

Substiute Parts

TPS70302PWPR

Texas InstrumentsIn Stock: 10263TPS70302PWPR Datasheet

Current PartRFQ

TPS7A8801RTJR

Texas InstrumentsIn Stock: 3675TPS7A8801RTJR Datasheet

MFR RecommendedRFQ

TPS70402PWPR

Texas InstrumentsIn Stock: 3208TPS70402PWPR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TPS70302PWPR are identified based on the following critical parameters that determine functional compatibility:

Primary Substitution Criteria:

• Output configuration (positive adjustable)
• Number of regulators (dual output)
• Output current capability (1A and 2A combined)
• Input voltage maximum (6V or higher)
• Output voltage adjustability range (minimum 1.22V or lower, maximum 5.5V or higher)
• Dropout voltage performance
• Operating temperature range (-40°C to 125°C)
• Control features (Enable, Power Good, Reset, Sequencing)
• Protection features (Over Current, Over Temperature, Reverse Polarity, UVLO)

Two substitute parts are identified:

1. TPS7A8801RTJR - MFR Recommended substitute with different package (20-QFN) and reduced output current capability (1A single output)
2. TPS70402PWPR - Parametric equivalent with identical package (24-HTSSOP) and matching electrical specifications

Parameter Comparison

Engineering Selection Recommendations

TPS70402PWPR is the primary substitute for new designs and production continuity. This part maintains identical electrical specifications, package type (24-PowerTSSOP), and control/protection features as the TPS70302PWPR. Both devices share the same quiescent current (250 µA), PSRR characteristics, and output current ratings (1A, 2A). The TPS70402PWPR is in Active product status, ensuring long-term availability and supply chain stability. Moisture sensitivity level and compliance certifications are equivalent.

TPS7A8801RTJR is designated as the MFR Recommended substitute but requires design modification. This part uses a different package (20-WFQFN versus 24-PowerTSSOP), necessitating PCB layout changes. Output current capability is reduced to 1A single output, which may not satisfy applications requiring the 2A output of the original device. The TPS7A8801RTJR offers improved dropout voltage (0.2V versus 0.25V) and lower moisture sensitivity (MSL 1 versus MSL 2), but higher quiescent current (4.6 mA versus 250 µA) and reduced PSRR performance (40dB at 500kHz versus 65dB at 1kHz). This substitute is suitable only for applications where package redesign is acceptable and 1A output current is sufficient.

Frequently Asked Questions (FAQ)

Q: Can TPS70402PWPR be used as a direct replacement for TPS70302PWPR?

A: Yes. The TPS70402PWPR is a parametric equivalent with identical package, electrical specifications, output current ratings, and control features. No design modifications are required for direct substitution.

Q: What are the key differences between TPS7A8801RTJR and TPS70302PWPR?

A: The TPS7A8801RTJR differs in three critical areas: (1) Package type is 20-WFQFN instead of 24-PowerTSSOP, requiring PCB redesign; (2) Output current is limited to 1A versus the dual 1A/2A outputs of the original; (3) Quiescent current is significantly higher at 4.6 mA versus 250 µA. These differences make it unsuitable for applications requiring the 2A output or where board space is constrained by the original package footprint.

Q: Why is TPS70302PWPR marked as Last Time Buy?

A: Last Time Buy status indicates the manufacturer has discontinued this product line. Existing inventory is available for final orders, but no future production is planned. Transition to an active substitute part is necessary for ongoing production requirements.

Q: Are both substitute parts RoHS3 compliant?

A: Yes. Both TPS70402PWPR and TPS7A8801RTJR are ROHS3 compliant, matching the compliance status of the TPS70302PWPR.

Q: Which substitute should be selected for a new design?

A: TPS70402PWPR is the recommended choice for new designs. It maintains full electrical and mechanical compatibility with the original part, eliminating design risk and qualification effort. TPS7A8801RTJR should be considered only if package size reduction and 1A output current are acceptable trade-offs.

Q: What is the moisture sensitivity difference between the substitutes?

A: TPS70302PWPR and TPS70402PWPR both have MSL 2 rating (1 Year shelf life). TPS7A8801RTJR has MSL 1 rating (Unlimited shelf life), providing superior moisture resistance and longer storage capability without baking requirements.