LM2676T-12 Equivalent & Substitute Parts

Part Overview

The LM2676T-12 is a buck switching regulator IC from Texas Instruments' SIMPLE SWITCHER® series, designed for step-down voltage conversion with a fixed 12V output at 3A maximum current. This device operates across an input voltage range of 8V to 40V and features a 260kHz switching frequency in a TO-220-7 through-hole package.

The LM2676T-12 carries an obsolete product status. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and access components with active manufacturing support and current compliance certifications.

Substiute Parts

LM2676T-12

Texas InstrumentsIn Stock: 4720LM2676T-12 Datasheet

Current PartRFQ

LM2676T-12/NOPB

Texas InstrumentsIn Stock: 1445LM2676T-12/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LM2676T-12 is determined by the following critical parameters:

• Output Voltage: Must be fixed at 12V
• Output Current Rating: Must be 3A or greater
• Input Voltage Range: Must accommodate 8V to 40V minimum
• Topology: Must be buck (step-down) configuration
• Package: Must be TO-220-7 Formed Leads for mechanical and thermal compatibility
• Switching Frequency: 260kHz baseline; equivalent frequencies within the same switching architecture are acceptable
• Mounting Type: Through-hole only

The LM2676T-12/NOPB qualifies as a direct substitute based on identical electrical specifications and package configuration. The primary distinction is product status and compliance certification level.

Parameter Comparison

Engineering Selection Recommendations

The LM2676T-12/NOPB is the direct substitute for the LM2676T-12. Both devices share identical electrical and mechanical specifications, ensuring pin-for-pin and functional compatibility.

The LM2676T-12/NOPB is recommended for new designs and production applications due to its active product status and ROHS3 compliance certification. The LM2676T-12 is obsolete and should be replaced in active supply chains.

For applications subject to RoHS3 regulatory requirements, the LM2676T-12/NOPB is the appropriate selection. Both devices maintain equivalent thermal performance and reliability characteristics within the specified operating temperature range.

Frequently Asked Questions (FAQ)

Q: Can the LM2676T-12/NOPB be used as a direct replacement for the LM2676T-12?

A: Yes. The LM2676T-12/NOPB is electrically and mechanically identical to the LM2676T-12. Pin configuration, output voltage, current rating, input voltage range, and package type are equivalent. PCB layout and circuit design require no modification.

Q: What is the difference between LM2676T-12 and LM2676T-12/NOPB?

A: The primary differences are product status and compliance certification. The LM2676T-12 is obsolete and RoHS non-compliant. The LM2676T-12/NOPB is active production and ROHS3 compliant. Electrical and thermal specifications are identical.

Q: Is the TO-220-7 package critical for substitution?

A: Yes. The TO-220-7 Formed Leads package is specified for this application. Substitutes must use the identical package type to ensure mechanical fit, thermal dissipation characteristics, and PCB mounting compatibility.

Q: What input voltage range must a substitute support?

A: A substitute must support a minimum input voltage of 8V and a maximum input voltage of 40V. Devices with narrower input ranges are not acceptable.

Q: Must the output voltage be exactly 12V?

A: Yes. The LM2676T-12 is a fixed-output device with 12V output. Substitutes must provide identical fixed 12V output. Adjustable-output variants are not compatible.

Q: Is the 3A output current rating a minimum or exact specification?

A: The 3A rating is the maximum continuous output current. Substitutes must support 3A or greater output current capacity.

Q: Are there compliance considerations for substitute selection?

A: Yes. The LM2676T-12/NOPB is ROHS3 compliant, while the LM2676T-12 is not. For applications subject to RoHS3 requirements, the LM2676T-12/NOPB is the required selection.