TLE4274G V50 Linear Voltage Regulator - Equivalent & Substitute Parts

Part Overview

The TLE4274G V50 is a linear voltage regulator IC from Infineon Technologies' OPTIREG™ series, delivering a fixed 5V output at 400mA in a TO-263-3-1 (D2PAK) surface mount package. This automotive-grade component (AEC-Q100 qualified) provides integrated protection against overcurrent, overtemperature, reverse polarity, and short circuit conditions across an operating range of -40°C to 150°C.

The TLE4274G V50 is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this regulator.

Substiute Parts

TLE4274G V50

Infineon TechnologiesIn Stock: 1114TLE4274G V50 Datasheet

Current PartRFQ

TLE42744GV50ATMA1

Infineon TechnologiesIn Stock: 2086TLE42744GV50ATMA1 Datasheet

DirectRFQ

TLE4274GV50ATMA2

Infineon TechnologiesIn Stock: 2440TLE4274GV50ATMA2 Datasheet

Parametric EquivalentRFQ

LM2931AD2T-5R4G

onsemiIn Stock: 2946LM2931AD2T-5R4G Datasheet

MFR RecommendedRFQ

LM2931D2T-5.0R4G

onsemiIn Stock: 1555LM2931D2T-5.0R4G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TLE4274G V50 is determined by the following critical parameters:

• Fixed output voltage of 5V
• Output current capability of 400mA or greater
• Maximum input voltage of 40V or greater
• Package compatibility: TO-263-3-1 or equivalent D2PAK footprint
• Automotive grade and AEC-Q100 qualification (for automotive applications)
• Protection features: overcurrent, overtemperature, reverse polarity, and short circuit protection

Substitute parts are grouped into two categories:

Direct Manufacturer Equivalents (Infineon OPTIREG™ Series): Parts sharing identical electrical specifications, automotive qualification, and the same base product lineage. These include TLE42744GV50ATMA1 and TLE4274GV50ATMA2, which differ primarily in product status (active vs. obsolete) and packaging format (Tape & Reel vs. standard).

Parametric Equivalents (Cross-Manufacturer): Parts from alternative manufacturers (onsemi LM2931 series) that meet the core electrical requirements but may have variations in secondary parameters such as quiescent current, PSRR, or maximum input voltage. These are suitable when manufacturer flexibility is acceptable.

Parameter Comparison

Engineering Selection Recommendations

For Automotive Applications with Full Specification Compliance:

Select TLE4274GV50ATMA2 or TLE42744GV50ATMA1 as primary substitutes. Both parts maintain identical electrical specifications, automotive grade classification, and AEC-Q100 qualification as the original TLE4274G V50. TLE4274GV50ATMA2 is preferred due to active product status and ROHS3 compliance. These parts ensure continuity in thermal performance, input voltage tolerance, and protection feature implementation across the full operating temperature range (-40°C to 150°C).

For Applications with Reduced Current Requirements:

The onsemi LM2931AD2T-5R4G and LM2931D2T-5.0R4G are suitable when output current demand does not exceed 100mA. These parts deliver superior PSRR performance (90dB vs. 60dB) and lower quiescent current (1 mA vs. 220 µA), benefiting low-power or noise-sensitive applications. However, these substitutes operate at reduced maximum input voltage (26V vs. 40V) and lower maximum operating temperature (125°C vs. 150°C). Package configuration differs (2 Leads + Tab vs. 3 Leads + Tab), requiring PCB layout verification. Industrial grade classification (not automotive) makes these unsuitable for AEC-Q100 mandated applications.

For Non-Automotive Applications:

The LM2931 series provides cost-effective alternatives when automotive qualification is not required. Verify that the 26V maximum input voltage and 125°C maximum operating temperature align with system requirements.

Frequently Asked Questions (FAQ)

Q: Can I use LM2931AD2T-5R4G as a direct replacement for TLE4274G V50?

A: LM2931AD2T-5R4G is not a direct replacement. While both deliver 5V output, the LM2931 is limited to 100mA output current versus the TLE4274G V50's 400mA capability. The LM2931 also has a lower maximum input voltage (26V vs. 40V) and maximum operating temperature (125°C vs. 150°C). Use LM2931 only in applications where output current does not exceed 100mA and operating temperature remains below 125°C.

Q: What is the difference between TLE42744GV50ATMA1 and TLE4274GV50ATMA2?

A: Both parts are Infineon OPTIREG™ series regulators with identical electrical specifications and automotive qualification. The primary differences are packaging format (Tape & Reel vs. Cut Tape) and product status (both active). Selection depends on procurement and assembly requirements. Electrical performance and reliability are equivalent.

Q: Are the onsemi LM2931 parts suitable for automotive applications?

A: The LM2931AD2T-5R4G and LM2931D2T-5.0R4G are industrial-grade components without AEC-Q100 qualification. They are not suitable for applications requiring automotive-grade components or AEC-Q100 compliance. For automotive use, select TLE4274GV50ATMA2 or TLE42744GV50ATMA1.

Q: Do the LM2931 parts have the same package footprint as the TLE4274G V50?

A: No. The TLE4274G V50 uses TO-263-4 (D2PAK with 3 Leads + Tab), while LM2931 parts use TO-263-3 (D2PAK with 2 Leads + Tab). The footprints are not interchangeable. PCB layout modification is required for substitution.

Q: What protection features do all substitute parts provide?

A: TLE4274GV50ATMA2 and TLE42744GV50ATMA1 provide overcurrent, overtemperature, reverse polarity, and short circuit protection, matching the original TLE4274G V50. LM2931 parts provide overcurrent and overtemperature protection only; reverse polarity and short circuit protection are not specified.

Q: Is the TLE4274G V50 still available for purchase?

A: The TLE4274G V50 is classified as obsolete. Active alternatives are TLE4274GV50ATMA2 and TLE42744GV50ATMA1, both from Infineon with current inventory availability.