TLE4266GHTMA1 Equivalent & Substitute Parts

Part Overview

The TLE4266GHTMA1 is a linear voltage regulator IC from Infineon Technologies' OPTIREG™ series, designed for positive fixed 5V output at 120mA in a surface-mount SOT223-4 package. This automotive-grade component (AEC-Q100 qualified) provides regulated power with integrated protection features including over-current, over-temperature, reverse polarity, and short-circuit protection.

The TLE4266GHTMA1 is designated as Last Time Buy, indicating end-of-life status. Identifying equivalent substitute parts is necessary to ensure design continuity and maintain supply chain reliability for applications currently using this regulator.

Substiute Parts

TLE4266GHTMA1

Infineon TechnologiesIn Stock: 1245TLE4266GHTMA1 Datasheet

Current PartRFQ

TLE42664GHTMA2

Infineon TechnologiesIn Stock: 10489TLE42664GHTMA2 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLE4266GHTMA1 is determined by the following critical parameters:

• Output Voltage: Must remain fixed at 5V
• Package Compatibility: Must use TO-261-4 or TO-261AA (PG-SOT223-4) for PCB layout compatibility
• Mounting Type: Surface mount requirement
• Automotive Grade: AEC-Q100 qualification required
• Protection Features: Over-current, over-temperature, reverse polarity, and short-circuit protection mandatory
• Output Current Capability: Minimum 100mA required for functional equivalence
• Input Voltage Range: Maximum input voltage of 40V or higher acceptable

The TLE42664GHTMA2 meets all substitution criteria as a direct equivalent from the same OPTIREG™ series with identical package and voltage specifications.

Parameter Comparison

Engineering Selection Recommendations

The TLE42664GHTMA2 is the manufacturer-recommended substitute for the TLE4266GHTMA1. Both components maintain identical electrical specifications for output voltage (5V fixed), package form factor (PG-SOT223-4), and automotive qualification (AEC-Q100). Both comply with ROHS3 and REACH requirements.

The TLE42664GHTMA2 offers the following advantages:

• Active product status ensures long-term availability and supply chain continuity
• Reduced quiescent current (60 µA vs. 400 µA) improves power efficiency in standby conditions
• Enhanced PSRR (68dB vs. 54dB at 100Hz) provides superior noise rejection
• Extended operating temperature range (-40°C ~ 150°C vs. -40°C ~ 125°C)

The primary design consideration is output current capacity: the substitute provides 100mA versus the original 120mA. Applications requiring the full 120mA output current must evaluate whether 100mA meets system requirements. For applications operating at or below 100mA, the TLE42664GHTMA2 is a direct functional replacement.

Frequently Asked Questions (FAQ)

Q: Can the TLE42664GHTMA2 directly replace the TLE4266GHTMA1 on existing PCBs?

A: Yes. Both components use identical TO-261-4 / TO-261AA (PG-SOT223-4) packages with the same pinout and footprint. No PCB layout modifications are required.

Q: What is the impact of the 20mA output current reduction (120mA to 100mA)?

A: The substitute provides 100mA maximum output current. Applications must operate at or below this level. If your design requires sustained output currents exceeding 100mA, the TLE42664GHTMA2 is not suitable.

Q: Are both parts automotive-qualified?

A: Yes. Both the TLE4266GHTMA1 and TLE42664GHTMA2 carry AEC-Q100 automotive qualification and are suitable for automotive applications.

Q: Why does the substitute have lower quiescent current?

A: The TLE42664GHTMA2 incorporates improved internal design, reducing standby power consumption from 400 µA to 60 µA. This benefits battery-powered or low-power applications.

Q: Is the input voltage range difference significant?

A: The substitute accepts maximum input voltage of 40V versus 45V for the original. For applications with input voltages between 40V and 45V, the TLE4266GHTMA1 is required. Most standard 24V or 36V industrial applications operate well within the 40V limit.

Q: What is the difference between the control features (Inhibit vs. Enable)?

A: The TLE4266GHTMA1 includes an Inhibit control feature, while the TLE42664GHTMA2 includes an Enable control feature. Both provide on/off control capability; the functional outcome differs only in logic polarity. Circuit design must account for this control signal inversion.