LM2831YMF Equivalent & Substitute Parts

Part Overview

The LM2831YMF is a buck switching regulator IC from Texas Instruments designed for step-down voltage conversion with positive adjustable output. It delivers 1.5A output current across an adjustable voltage range of 0.6V to 4.5V, operating from a 3V to 5.5V input supply at a switching frequency of 550kHz. The device is packaged in SC-74A (SOT-753) surface mount configuration.

The LM2831YMF carries an obsolete product status. Identifying equivalent substitute parts ensures design continuity and maintains supply chain reliability for applications currently utilizing this regulator.

Substiute Parts

LM2831YMF

Texas InstrumentsIn Stock: 2606LM2831YMF Datasheet

Current PartRFQ

LM2831YMF/NOPB

Texas InstrumentsIn Stock: 18560LM2831YMF/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LM2831YMF is determined by strict equivalence across the following critical parameters:

• Buck topology with positive adjustable output configuration
• Single output stage
• Input voltage range: 3V to 5.5V
• Output voltage range: 0.6V to 4.5V
• Output current capability: 1.5A
• Switching frequency: 550kHz
• Non-synchronous rectifier design
• Operating temperature range: -40°C to 125°C
• Surface mount packaging in SC-74A (SOT-753) / SOT-23-5 configuration

The LM2831YMF/NOPB qualifies as a direct substitute, maintaining identical electrical specifications and mechanical compatibility while offering improved product status and regulatory compliance.

Parameter Comparison

Engineering Selection Recommendations

The LM2831YMF/NOPB is the direct substitute for the obsolete LM2831YMF. Both devices share identical electrical and mechanical specifications, ensuring pin-for-pin and functional compatibility.

The LM2831YMF/NOPB offers two significant advantages:

1. Active product status with ongoing manufacturer support and availability
2. ROHS3 compliance, meeting current environmental and regulatory requirements

The original LM2831YMF carries RoHS non-compliant status and obsolete product designation. For new designs or production continuity, the LM2831YMF/NOPB is the appropriate selection.

Frequently Asked Questions (FAQ)

Q: Can LM2831YMF/NOPB replace LM2831YMF in existing designs?

A: Yes. The LM2831YMF/NOPB is electrically and mechanically identical to the LM2831YMF. All electrical parameters, output specifications, and package dimensions are equivalent. Direct substitution is supported without circuit modification.

Q: What is the difference between LM2831YMF and LM2831YMF/NOPB?

A: The primary differences are product status and regulatory compliance. LM2831YMF is obsolete and RoHS non-compliant. LM2831YMF/NOPB is active and ROHS3 compliant. The "/NOPB" suffix indicates lead-free, halogen-free packaging. Electrical performance is identical.

Q: Are there packaging differences between these parts?

A: Both use SC-74A (SOT-753) / SOT-23-5 surface mount packaging. The LM2831YMF is supplied in bulk format, while LM2831YMF/NOPB is supplied in Tape & Reel (TR) format, which is standard for production environments.

Q: What parameters determine substitution eligibility for buck regulators?

A: For the LM2831 series, substitution requires matching: buck topology, positive adjustable output, 1.5A output current, 550kHz switching frequency, 3V to 5.5V input range, 0.6V to 4.5V output range, non-synchronous rectifier design, -40°C to 125°C operating temperature, and SC-74A (SOT-753) packaging.

Q: Is the LM2831YMF/NOPB suitable for new production designs?

A: Yes. The LM2831YMF/NOPB is an active product with ROHS3 compliance, making it appropriate for new designs and ongoing production. The obsolete LM2831YMF should not be used for new designs.