TLE4274GSV25HTSA1 Equivalent & Substitute Parts

Part Overview

The TLE4274GSV25HTSA1 is a linear voltage regulator IC from Infineon Technologies' OPTIREG™ series, designed to deliver a fixed 2.5V output at 400mA. This device is classified as obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations. The part operates across automotive temperature ranges (-40°C to 150°C) and includes comprehensive protection features including over-current, over-temperature, reverse polarity, and short-circuit protection.

Substiute Parts

TLE4274GSV25HTSA1

Infineon TechnologiesIn Stock: 1091TLE4274GSV25HTSA1 Datasheet

Current PartRFQ

SPX3940M3-L-2-5/TR

MaxLinear, Inc.In Stock: 1098SPX3940M3-L-2-5/TR Datasheet

MFR RecommendedRFQ

TPS7B6925QDCYRQ1

Texas InstrumentsIn Stock: 3689TPS7B6925QDCYRQ1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute components for the TLE4274GSV25HTSA1 are selected based on the following critical parameters:

Primary Matching Criteria:

• Fixed output voltage of 2.5V
• Surface mount packaging compatible with SOT-223 footprint
• Positive output configuration
• Maximum input voltage rating of 40V or greater
• Operating temperature range spanning -40°C to 150°C
• Automotive-grade qualification (AEC-Q100 preferred)

Secondary Compatibility Factors:

• Output current capability (minimum 400mA required for direct replacement)
• Dropout voltage performance
• Protection feature set (over-current, over-temperature, short-circuit)
• Quiescent current characteristics

Two substitute parts meet the core electrical and mechanical requirements while offering active product status and improved availability.

Parameter Comparison

Engineering Selection Recommendations

TPS7B6925QDCYRQ1 (Texas Instruments) is the primary substitute for direct replacement applications. This part maintains identical output voltage (2.5V), matching input voltage rating (40V maximum), identical operating temperature range (-40°C to 150°C), and automotive-grade AEC-Q100 qualification. The SOT-223-4 package matches the original pinout configuration. However, output current is limited to 150mA, which is insufficient for applications requiring the full 400mA capability of the original part. This substitute is suitable only for designs where output current demand does not exceed 150mA.

SPX3940M3-L-2-5/TR (MaxLinear, Inc.) provides higher output current capability (1A) and superior dropout voltage performance (0.55V @ 1A). The part is actively manufactured and available. However, this substitute has limitations: maximum input voltage is restricted to 16V (versus 40V for the original), operating temperature range is limited to -40°C to 125°C (versus 150°C), and it lacks automotive-grade qualification. The SOT-223-3 package differs from the original SOT-223-4 configuration, requiring PCB layout verification. This substitute is applicable only in applications where input voltage remains below 16V and maximum operating temperature does not exceed 125°C.

For applications requiring full 400mA output current with 40V input tolerance and automotive qualification, neither substitute provides complete functional equivalence. Design review is necessary to determine if reduced current capability or input voltage limitations are acceptable for the target application.

Frequently Asked Questions (FAQ)

Q: Can the TPS7B6925QDCYRQ1 directly replace the TLE4274GSV25HTSA1 in all applications?

A: The TPS7B6925QDCYRQ1 provides direct package and pinout compatibility (SOT-223-4) with matching output voltage, input voltage rating, and operating temperature range. However, output current is limited to 150mA versus the original 400mA specification. Substitution is valid only if the application's maximum output current requirement does not exceed 150mA.

Q: What are the package compatibility considerations for the SPX3940M3-L-2-5/TR?

A: The SPX3940M3-L-2-5/TR uses SOT-223-3 packaging, which differs from the original SOT-223-4. The three-pin configuration requires verification of PCB layout and schematic connections before implementation. Pin assignment differences must be confirmed against both datasheets.

Q: Is the SPX3940M3-L-2-5/TR suitable for automotive applications?

A: The SPX3940M3-L-2-5/TR is classified as commercial-grade without AEC-Q100 qualification. It is not recommended for automotive applications requiring automotive-grade components. Use is restricted to commercial or industrial applications only.

Q: What is the primary limitation of using the SPX3940M3-L-2-5/TR as a substitute?

A: The maximum input voltage rating is 16V, compared to 40V for the original part. This substitute is applicable only in systems where input voltage remains below 16V. Additionally, the maximum operating temperature is limited to 125°C versus 150°C for the original specification.

Q: Are there output current trade-offs between the available substitutes?

A: Yes. The TPS7B6925QDCYRQ1 limits output current to 150mA (37.5% of original 400mA capability), while the SPX3940M3-L-2-5/TR provides 1A (250% of original capability). Selection depends on whether the application requires reduced current (TPS7B6925QDCYRQ1) or can tolerate input voltage and temperature restrictions (SPX3940M3-L-2-5/TR).

Q: What certifications and compliance status should be verified before substitution?

A: The original TLE4274GSV25HTSA1 carries AEC-Q100 automotive qualification. The TPS7B6925QDCYRQ1 maintains this qualification, making it suitable for automotive applications. The SPX3940M3-L-2-5/TR lacks automotive qualification and is restricted to non-automotive use. RoHS compliance status differs between parts and must be verified against system requirements.