TLE4264G Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The TLE4264G is a linear voltage regulator IC manufactured by Infineon Technologies, designed to deliver a fixed 5V output at 120mA. This device operates across a wide input voltage range up to 45V and includes integrated protection features for over-temperature, reverse polarity, and short-circuit conditions. The part is qualified to AEC-Q100 automotive standards and housed in a SOT223-4 surface-mount package.

The TLE4264G has been discontinued at DiGi Electronics. Equivalent substitute parts are available from multiple manufacturers with comparable electrical and mechanical specifications, enabling direct replacement in existing designs while maintaining automotive-grade reliability and compliance.

Substiute Parts

TLE4264G

Infineon TechnologiesIn Stock: 19478TLE4264G Datasheet

Current PartRFQ

L5150BNTR

STMicroelectronicsIn Stock: 35137L5150BNTR Datasheet

MFR RecommendedRFQ

NCV2931AST-5T3G

onsemiIn Stock: 27810NCV2931AST-5T3G Datasheet

MFR RecommendedRFQ

NCV4264-2ST50T3G

onsemiIn Stock: 245375NCV4264-2ST50T3G Datasheet

MFR RecommendedRFQ

NCV8664CST50T3G

onsemiIn Stock: 18212NCV8664CST50T3G Datasheet

MFR RecommendedRFQ

TPS7B6950QDCYRQ1

Texas InstrumentsIn Stock: 10195TPS7B6950QDCYRQ1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TLE4264G is determined by the following critical parameters:

• Output Voltage: Must be fixed at 5V
• Output Configuration: Must be positive
• Number of Regulators: Must be single output (1)
• Package Type: Must be SOT223 or TO-261-4 surface-mount equivalent
• Automotive Grade: Must meet AEC-Q100 qualification
• Operating Temperature: Must support -40°C ~ 150°C range
• Output Current Capability: Must meet or exceed 120mA requirement
• Input Voltage Range: Must support up to 40V minimum (TLE4264G supports 45V)

The substitute parts listed below satisfy these core electrical and mechanical requirements, enabling direct functional replacement in automotive and industrial applications.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Active Status, Full Compliance)

L5150BNTR (STMicroelectronics) and NCV8664CST50T3G (onsemi) are the preferred substitutes. Both devices are in active production, RoHS3 compliant, AEC-Q100 qualified, and support the full -40°C ~ 150°C operating temperature range. Both offer 150mA output current, exceeding the TLE4264G requirement. L5150BNTR provides identical 0.5V dropout voltage specification. NCV8664CST50T3G delivers superior quiescent current performance (29 µA) and maintains 45V maximum input voltage compatibility.

TPS7B6950QDCYRQ1 (Texas Instruments) is an active alternative with 150mA output capability and excellent quiescent current (25 µA). Input voltage maximum is 40V, suitable for most automotive applications. All protection features are present including UVLO (Under Voltage Lockout).

Secondary Substitute (Legacy Status)

NCV4264-2ST50T3G (onsemi) maintains electrical compatibility with 45V input voltage support and 0.5V dropout specification. However, this part is marked "Not For New Designs" and should be used only for legacy system maintenance or repair applications where existing inventory exists.

Not Recommended

NCV2931AST-5T3G (onsemi) has a maximum input voltage of only 26V, which is insufficient for the TLE4264G's 45V specification. Additionally, the operating temperature range is limited to -40°C ~ 125°C, below the TLE4264G's 150°C maximum. This part is suitable only for lower-voltage applications.

Frequently Asked Questions (FAQ)

Q: Can I use L5150BNTR as a direct replacement for TLE4264G?

A: Yes. L5150BNTR is electrically and mechanically compatible. Both are 5V fixed-output regulators in SOT223 packages with AEC-Q100 qualification. L5150BNTR provides 150mA output (exceeding the 120mA requirement) and maintains the same 0.5V dropout voltage. Operating temperature range is identical (-40°C ~ 150°C). The primary difference is that L5150BNTR has lower quiescent current (80 µA vs. 400 µA), which improves power efficiency.

Q: What is the difference between NCV8664CST50T3G and NCV4264-2ST50T3G?

A: Both are onsemi 5V regulators in SOT223 packages with AEC-Q100 qualification. NCV8664CST50T3G is in active production with 150mA output and 29 µA quiescent current. NCV4264-2ST50T3G is marked "Not For New Designs" with 100mA output and 55 µA quiescent current. For new designs, NCV8664CST50T3G is the preferred choice.

Q: Why is NCV2931AST-5T3G not recommended as a substitute?

A: NCV2931AST-5T3G has a maximum input voltage of 26V, which is significantly lower than the TLE4264G's 45V specification. Additionally, its maximum operating temperature is 125°C, below the TLE4264G's 150°C rating. This part is suitable only for applications with lower input voltage requirements and reduced temperature range.

Q: Are all substitute parts RoHS compliant?

A: The TLE4264G is RoHS non-compliant. All listed substitutes (L5150BNTR, NCV2931AST-5T3G, NCV4264-2ST50T3G, NCV8664CST50T3G, and TPS7B6950QDCYRQ1) are ROHS3 compliant. If RoHS compliance is required for your application, any of these substitutes will meet that requirement.

Q: Can I use TPS7B6950QDCYRQ1 in applications requiring 45V input voltage?

A: TPS7B6950QDCYRQ1 has a maximum input voltage of 40V. It is suitable for applications with input voltages up to 40V. If your design requires 45V input voltage support, use NCV4264-2ST50T3G, NCV8664CST50T3G, or L5150BNTR instead.

Q: What is the package compatibility between these parts?

A: All substitute parts use SOT223 or SOT223-4 surface-mount packages, which are mechanically equivalent to the TLE4264G's SOT223-4 package. Pin configurations are identical, enabling direct PCB replacement without layout modifications.