TLE4275S Equivalent & Substitute Parts

Part Overview

The TLE4275S is a linear voltage regulator IC from Infineon Technologies designed for positive fixed 5V output applications with 450mA current capacity. This through-hole TO-220-5 packaged device is classified as Obsolete, making identification of functionally equivalent alternatives essential for ongoing production support, maintenance, and design continuity. The part delivers regulated 5V output with integrated protection features including over-current, over-temperature, reverse polarity, and short-circuit protection, making it suitable for automotive-grade applications requiring AEC-Q100 qualification.

Substiute Parts

TLE4275S

Infineon TechnologiesIn Stock: 919TLE4275S Datasheet

Current PartRFQ

NCV4275ADS50R4G

onsemiIn Stock: 29183NCV4275ADS50R4G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLE4275S is determined by strict alignment of the following electrical and mechanical parameters:

Critical Matching Parameters:

• Output voltage: 5V fixed
• Output current capability: 450mA minimum
• Input voltage rating: 42V maximum or higher
• Dropout voltage: 0.5V @ 300mA or lower
• Quiescent current: 200 µA or lower
• PSRR: 60dB (100Hz) or better
• Operating temperature range: -40°C to 150°C minimum
• Automotive grade with AEC-Q100 qualification
• Control features: Reset functionality
• Protection features: Over-current, over-temperature, reverse polarity, short-circuit protection

Package Consideration: The TLE4275S uses through-hole TO-220-5 mounting. Substitutes may employ surface-mount alternatives (D2PAK-5) provided the electrical specifications remain equivalent and the application design accommodates the package change.

The identified substitute NCV4275ADS50R4G from onsemi meets all critical electrical parameters while offering surface-mount packaging in D2PAK-5 format.

Parameter Comparison

Engineering Selection Recommendations

The NCV4275ADS50R4G qualifies as a direct electrical equivalent to the TLE4275S based on matched output voltage, current rating, input voltage tolerance, dropout voltage, quiescent current, and PSRR specifications. Both devices maintain automotive-grade classification with AEC-Q100 qualification and identical operating temperature ranges.

Key Considerations:

The primary distinction is packaging: TLE4275S uses through-hole TO-220-5 mounting while NCV4275ADS50R4G employs surface-mount D2PAK-5 format. This difference requires PCB redesign if direct footprint replacement is required. However, the electrical performance remains equivalent.

Both devices are classified outside active production (Obsolete and Not For New Designs respectively), indicating limited future availability. For new designs, consultation with component distributors regarding long-term sourcing is advised.

The NCV4275ADS50R4G demonstrates higher maximum supply current (35 mA vs. 22 mA) and reduced protection feature set (lacks over-current protection compared to TLE4275S). These differences do not affect functional equivalence for standard 5V regulation applications but should be evaluated within specific circuit requirements.

Frequently Asked Questions (FAQ)

Q: Can NCV4275ADS50R4G directly replace TLE4275S in existing designs?

A: Electrical substitution is valid. The NCV4275ADS50R4G provides identical output voltage, current capacity, and regulation characteristics. However, the package change from through-hole TO-220-5 to surface-mount D2PAK-5 requires PCB modification. Direct socket replacement is not possible.

Q: What are the key electrical parameters that define substitution eligibility?

A: Output voltage (5V fixed), output current (450mA), input voltage rating (42V), dropout voltage (0.5V @ 300mA), quiescent current (200 µA), and PSRR (60dB @ 100Hz) must match or exceed the original specification. Automotive grade and AEC-Q100 qualification are mandatory for equivalent parts.

Q: Are there differences in protection features between these parts?

A: Yes. The TLE4275S includes over-current protection; the NCV4275ADS50R4G does not. Both provide over-temperature, reverse polarity, and short-circuit protection. Evaluate circuit requirements to determine if over-current protection is necessary for your application.

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

A: TLE4275S is marked Obsolete, indicating discontinued production. NCV4275ADS50R4G is marked Not For New Designs, indicating limited availability and no recommended use in new product development. Both statuses reflect end-of-life status and warrant early component sourcing decisions.

Q: Can the D2PAK-5 package be used in applications originally designed for TO-220-5?

A: D2PAK-5 and TO-220-5 are mechanally and thermally distinct packages. D2PAK-5 is surface-mount with different thermal characteristics and board layout requirements. PCB redesign is necessary; direct mechanical substitution is not feasible.