LM5141RGET Equivalent & Substitute Parts

Part Overview

The LM5141RGET is a synchronous buck controller IC manufactured by Texas Instruments, designed for step-down DC-DC conversion applications. This device operates as a transistor driver with positive output configuration in a 24-VQFN (4x4) package. The part is actively produced and carries automotive-grade qualification (AEC-Q100), making it suitable for demanding industrial and automotive applications. Equivalent and substitute parts are identified based on matching electrical specifications, package compatibility, and compliance certifications to ensure direct functional interchangeability in circuit designs.

Substiute Parts

LM5141RGET

Texas InstrumentsIn Stock: 30337LM5141RGET Datasheet

Current PartRFQ

LM5141QRGERQ1

Texas InstrumentsIn Stock: 3335LM5141QRGERQ1 Datasheet

Parametric EquivalentRFQ

LM5141QRGETQ1

Texas InstrumentsIn Stock: 1574LM5141QRGETQ1 Datasheet

Parametric EquivalentRFQ

LM5141RGER

Texas InstrumentsIn Stock: 188127LM5141RGER Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LM5141RGET are identified based on strict parametric equivalence across all critical electrical and mechanical specifications. The substitution logic is based on the following key parameters that must remain identical:

• Voltage Supply Range: 3.8V ~ 65V
• Switching Frequency: 440kHz, 2.2MHz
• Output Type: Transistor Driver
• Function: Step-Down Buck Controller
• Output Configuration: Positive
• Number of Outputs: 1
• Output Phases: 1
• Control Features: Current Limit, Enable, Frequency Control, Power Good, Soft Start
• Operating Temperature Range: -40°C ~ 150°C (TJ)
• Package / Case: 24-VFQFN Exposed Pad
• Supplier Device Package: 24-VQFN (4x4)
• Grade: Automotive
• Qualification: AEC-Q100
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 2 (1 Year)
• REACH Status: REACH Unaffected

All substitute parts listed below meet these criteria and are manufactured by Texas Instruments under the LM5141 base product family.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed—LM5141QRGERQ1, LM5141QRGETQ1, and LM5141RGER—are functionally equivalent to the LM5141RGET and carry identical electrical specifications, package configurations, and compliance certifications. Each part maintains active product status with Texas Instruments and meets automotive-grade requirements through AEC-Q100 qualification. Selection among these parts may be based on packaging format availability (Tape & Reel versus Cut Tape & Digi-Reel) and current inventory levels, as all parts are electrically and mechanically interchangeable. The LM5141RGER variant offers the highest inventory availability at 188,094 units, while LM5141QRGETQ1 and LM5141QRGERQ1 provide alternative packaging options with lower stock levels.

Frequently Asked Questions (FAQ)

Q: Are all listed substitute parts pin-compatible with the LM5141RGET?

A: Yes. All substitute parts use the identical 24-VQFN (4x4) package with exposed pad configuration, ensuring direct pin-for-pin compatibility without PCB layout modifications.

Q: What is the difference between LM5141RGET and LM5141RGER?

A: Both parts are electrically identical buck controllers with matching specifications. The primary difference is packaging format: LM5141RGET is supplied in Tape & Reel (TR) format, while LM5141RGER is available in Cut Tape (CT) & Digi-Reel format. Electrical performance and compliance certifications are identical.

Q: Can LM5141QRGETQ1 be used as a direct replacement for LM5141RGET?

A: Yes. LM5141QRGETQ1 is a parametric equivalent with identical electrical specifications, operating temperature range, control features, and package configuration. The part is supplied in Cut Tape (CT) & Digi-Reel packaging instead of Tape & Reel.

Q: Are these parts suitable for automotive applications?

A: Yes. All listed parts carry automotive-grade classification and AEC-Q100 qualification, meeting automotive industry standards for reliability and performance.

Q: What is the significance of the MSL rating for these parts?

A: The Moisture Sensitivity Level (MSL) of 2 with a 1-year floor life indicates these parts require standard moisture control during storage and handling. Components must be stored in dry conditions and used within one year of the manufacturing date to maintain reliability.

Q: Do all substitute parts comply with environmental regulations?

A: Yes. All parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic components in industrial and automotive applications.