TLE4275QPWPRQ1 Equivalent & Substitute Parts

Part Overview

The TLE4275QPWPRQ1 is a linear voltage regulator IC from Texas Instruments designed for automotive applications. It delivers a fixed 5V output at 450mA with a maximum input voltage of 42V and a dropout voltage of 0.5V at 300mA. The device is qualified to AEC-Q100 standards and operates across the temperature range of -40°C to 150°C. This part is currently in Last Time Buy status, making identification of suitable substitute components necessary for design continuity and long-term supply chain planning.

Substiute Parts

TLE4275QPWPRQ1

Texas InstrumentsIn Stock: 2298TLE4275QPWPRQ1 Datasheet

Current PartRFQ

TPS7B8750QKVURQ1

Texas InstrumentsIn Stock: 8543TPS7B8750QKVURQ1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLE4275QPWPRQ1 is determined by the following critical parameters:

• Fixed 5V output voltage requirement
• Positive output configuration
• Automotive grade qualification (AEC-Q100)
• Operating temperature range of -40°C to 150°C
• Surface mount technology compatibility
• Output current capability of 450mA or greater
• Input voltage tolerance up to 40V minimum

The TPS7B8750QKVURQ1 qualifies as a substitute based on matching output voltage, positive configuration, automotive grade, temperature range, and surface mount packaging. The substitute provides enhanced output current (500mA) and improved quiescent current performance, making it functionally compatible for applications requiring the TLE4275QPWPRQ1.

Parameter Comparison

Engineering Selection Recommendations

The TPS7B8750QKVURQ1 is suitable as a substitute for the TLE4275QPWPRQ1 based on the following engineering criteria:

Both devices maintain automotive grade qualification and AEC-Q100 certification, ensuring compliance with automotive reliability standards. Both operate across the identical temperature range of -40°C to 150°C and deliver the required 5V fixed output with positive configuration.

The TPS7B8750QKVURQ1 provides 500mA output current, exceeding the 450mA requirement of the original part. The substitute exhibits superior quiescent current performance (26 µA versus 200 µA) and higher PSRR (70dB at 1kHz versus 60dB at 100Hz), offering improved power supply rejection characteristics.

The primary design consideration is the package transition from 20-PowerTSSOP to TO-252-5 DPAK, which requires PCB layout modification. The input voltage maximum of 40V on the substitute is 2V lower than the original 42V specification; this must be verified against the application's input voltage requirements.

Frequently Asked Questions (FAQ)

Q: Can the TPS7B8750QKVURQ1 directly replace the TLE4275QPWPRQ1 without PCB modifications?

A: No. The TLE4275QPWPRQ1 uses a 20-PowerTSSOP package while the TPS7B8750QKVURQ1 uses a TO-252-5 DPAK package. PCB layout changes are required, including pad geometry and thermal management considerations.

Q: What is the impact of the 2V lower maximum input voltage on the TPS7B8750QKVURQ1?

A: The substitute accepts input voltages up to 40V versus 42V on the original part. Applications operating below 40V input are unaffected. Systems requiring operation above 40V must retain the TLE4275QPWPRQ1 or select an alternative device.

Q: Are both devices automotive qualified?

A: Yes. Both the TLE4275QPWPRQ1 and TPS7B8750QKVURQ1 carry AEC-Q100 qualification and automotive grade designation, meeting automotive reliability and quality standards.

Q: Does the higher output current of the TPS7B8750QKVURQ1 affect compatibility?

A: No. The 500mA output capability of the substitute exceeds the 450mA requirement, providing design margin. Applications drawing 450mA or less operate within the substitute's rated specifications.

Q: What are the thermal management differences between the two packages?

A: The 20-PowerTSSOP and TO-252-5 DPAK packages have different thermal characteristics. The TO-252-5 DPAK includes a tab for enhanced heat dissipation. Thermal analysis specific to the application's power dissipation requirements is necessary to confirm adequate thermal performance.

Q: Is the RoHS compliance status a concern when substituting?

A: The TLE4275QPWPRQ1 is ROHS3 compliant while the TPS7B8750QKVURQ1 status is not applicable. Verify RoHS compliance requirements for your application and supply chain before finalizing the substitution.