LM2831ZMF Equivalent & Substitute Parts

Part Overview

The LM2831ZMF 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 input voltage range of 3V to 5.5V, with adjustable output from 0.6V to 4.5V. The device operates at a switching frequency of 3MHz and is housed in a SC-74A (SOT-753) surface mount package.

The LM2831ZMF is classified as obsolete. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production or maintenance requirements for systems utilizing this component.

Substiute Parts

LM2831ZMF

Texas InstrumentsIn Stock: 6276LM2831ZMF Datasheet

Current PartRFQ

LM2831ZMF/NOPB

Texas InstrumentsIn Stock: 1727LM2831ZMF/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LM2831ZMF is determined by strict equivalence across the following critical parameters:

• Topology: Buck (step-down) switching regulator
• Output Configuration: Positive adjustable
• Input Voltage Range: 3V to 5.5V
• Output Voltage Range: 0.6V to 4.5V
• Output Current: 1.5A
• Switching Frequency: 3MHz
• Package: SC-74A (SOT-753) / SOT-23-5
• Mounting: Surface Mount
• Operating Temperature Range: -40°C to 125°C

The LM2831ZMF/NOPB is identified as a direct substitute based on identical electrical specifications and mechanical compatibility. The primary distinction is product status and packaging format.

Parameter Comparison

Engineering Selection Recommendations

The LM2831ZMF/NOPB is the direct equivalent substitute for the LM2831ZMF. Both parts share identical electrical and mechanical specifications, ensuring functional interchangeability in circuit designs.

The LM2831ZMF/NOPB is classified as Active product status, providing assured long-term availability compared to the Obsolete status of the LM2831ZMF. The LM2831ZMF/NOPB also carries ROHS3 compliance, meeting current environmental and regulatory requirements, whereas the LM2831ZMF is RoHS non-compliant.

For new designs or ongoing production requiring regulatory compliance, the LM2831ZMF/NOPB is the appropriate selection. For legacy system maintenance where RoHS compliance is not a requirement, either part may be used interchangeably based on availability and packaging requirements.

Frequently Asked Questions (FAQ)

Q: Can the LM2831ZMF/NOPB replace the LM2831ZMF in existing designs?

A: Yes. The LM2831ZMF/NOPB is electrically and mechanically identical to the LM2831ZMF. All electrical parameters, output specifications, and package dimensions are equivalent. Direct substitution is possible without circuit modification.

Q: What is the difference between LM2831ZMF and LM2831ZMF/NOPB?

A: The primary differences are product status and packaging format. The LM2831ZMF is Obsolete and supplied in bulk packaging, while the LM2831ZMF/NOPB is Active and supplied in Tape & Reel format. The LM2831ZMF/NOPB also carries ROHS3 compliance. Electrical and mechanical specifications are identical.

Q: Is the SOT-23-5 package compatible with SC-74A (SOT-753)?

A: Yes. SOT-23-5 is the supplier device package designation for the SC-74A (SOT-753) physical package. These designations refer to the same physical component package and are fully compatible.

Q: Why is the LM2831ZMF marked as Obsolete?

A: The LM2831ZMF has reached end-of-life status. The LM2831ZMF/NOPB remains in active production and is the recommended part for current applications.

Q: Are there inventory considerations when selecting between these parts?

A: The LM2831ZMF has 6235 pieces in stock, while the LM2831ZMF/NOPB has 1711 pieces in stock. Availability may vary by supplier and time. For long-term supply assurance, the Active status of LM2831ZMF/NOPB provides greater reliability.