TLE42754EXUMA2 Equivalent & Substitute Parts

Part Overview

The TLE42754EXUMA2 is a linear voltage regulator IC from Infineon Technologies' OPTIREG™ series, designed to deliver a fixed 5V output at 450mA. This automotive-grade regulator features integrated protection against overcurrent, overtemperature, and reverse polarity conditions, with a maximum input voltage of 42V and a dropout voltage of 0.5V at 300mA. The device is currently classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing system support and new designs requiring similar performance characteristics.

Substiute Parts

TLE42754EXUMA2

Infineon TechnologiesIn Stock: 3433TLE42754EXUMA2 Datasheet

Current PartRFQ

TLE426942ELXUMA1

Infineon TechnologiesIn Stock: 3379TLE426942ELXUMA1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLE42754EXUMA2 is determined by the following critical parameters:

Package Compatibility: Both the main part and substitute must use the 14-LSSOP (0.154", 3.90mm Width) Exposed Pad package to ensure PCB-level compatibility without redesign.

Output Voltage: The fixed 5V output is a core functional requirement. Substitute parts must maintain this voltage specification.

Electrical Performance: Substitutes must operate within the automotive temperature range (-40°C to 150°C) and maintain AEC-Q100 qualification for automotive applications.

Protection Features: Equivalent parts must include overcurrent, overtemperature, and reverse polarity protection to maintain system reliability.

The TLE426942ELXUMA1 qualifies as a manufacturer-recommended substitute based on these criteria, despite differences in output current rating and certain electrical characteristics.

Parameter Comparison

Engineering Selection Recommendations

The TLE426942ELXUMA1 is designated as the manufacturer-recommended substitute for the obsolete TLE42754EXUMA2. Both devices maintain identical package geometry, output voltage specification, and automotive qualification status (AEC-Q100). The substitute part is currently in active production status, ensuring long-term availability and supply chain continuity.

The primary design consideration is the reduced output current rating of the substitute (150mA versus 450mA). Selection of the TLE426942ELXUMA1 is appropriate only for applications where the load current requirement does not exceed 150mA. Applications requiring the full 450mA output current of the original part cannot use this substitute without circuit redesign or parallel device configuration.

Both parts maintain identical operating temperature ranges, protection features, and compliance certifications (ROHS3, AEC-Q100), supporting direct substitution in qualifying applications.

Frequently Asked Questions (FAQ)

Q: Can the TLE426942ELXUMA1 directly replace the TLE42754EXUMA2 in all applications?

A: Direct replacement is limited by output current capability. The substitute part is rated for 150mA maximum output current, while the original part supports 450mA. Substitution is valid only for applications where load current does not exceed 150mA.

Q: Are the package dimensions identical between these parts?

A: Yes. Both parts use the 14-LSSOP (0.154", 3.90mm Width) Exposed Pad package, enabling PCB-level compatibility without layout modifications.

Q: Do both parts meet automotive qualification requirements?

A: Yes. Both the TLE42754EXUMA2 and TLE426942ELXUMA1 are AEC-Q100 qualified automotive-grade devices with identical operating temperature ranges (-40°C to 150°C).

Q: What is the significance of the product status difference?

A: The TLE42754EXUMA2 is classified as obsolete, indicating discontinued production. The TLE426942ELXUMA1 maintains active production status, ensuring availability for new designs and ongoing system support.

Q: How do the protection features compare?

A: Both parts include identical protection mechanisms: overcurrent protection, overtemperature protection, and reverse polarity protection, maintaining equivalent system reliability.

Q: Are there differences in power supply rejection ratio (PSRR)?

A: The substitute part provides improved PSRR performance (70dB at 100Hz versus 60dB), offering superior noise rejection in the power supply path.