LM2651MTC-ADJ Buck Switching Regulator IC

Part Overview

The LM2651MTC-ADJ is a buck switching regulator IC manufactured by Texas Instruments, designed for positive adjustable output voltage regulation in power management applications. This device delivers 1.5A output current with an adjustable output range from 1.238V to 13V, operating from a 4V to 14V input supply. The part is currently in Last Time Buy status, making identification of equivalent alternatives essential for design continuity and long-term supply chain planning.

Substiute Parts

LM2651MTC-ADJ

Texas InstrumentsIn Stock: 8926LM2651MTC-ADJ Datasheet

Current PartRFQ

LM2651MTC-ADJ/NOPB

Texas InstrumentsIn Stock: 2579LM2651MTC-ADJ/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the LM2651MTC-ADJ is determined by strict equivalence across the following critical parameters:

• Input voltage range: 4V to 14V
• Output voltage adjustability: 1.238V to 13V
• Output current capacity: 1.5A
• Switching frequency: 300kHz
• Synchronous rectifier topology: Yes
• Package type: 16-TSSOP (0.173", 4.40mm Width)
• Operating temperature range: -40°C to 125°C
• Mounting configuration: Surface Mount

The LM2651MTC-ADJ/NOPB is identified as the manufacturer-recommended equivalent part. Both parts share identical electrical specifications and mechanical packaging, with the primary distinction being product status and packaging format.

Parameter Comparison

Engineering Selection Recommendations

The LM2651MTC-ADJ/NOPB is the direct equivalent substitute for the LM2651MTC-ADJ. Both parts are manufactured by Texas Instruments and maintain identical electrical and mechanical specifications across all critical parameters. The LM2651MTC-ADJ/NOPB carries Active product status, ensuring continued availability and support, whereas the original LM2651MTC-ADJ is in Last Time Buy status. Both parts maintain ROHS3 compliance and identical moisture sensitivity ratings. Selection between these parts should prioritize the LM2651MTC-ADJ/NOPB for new designs and ongoing production due to its active lifecycle status.

Frequently Asked Questions (FAQ)

Q: What is the difference between LM2651MTC-ADJ and LM2651MTC-ADJ/NOPB?

A: Both parts are electrically and mechanically identical. The primary difference is product status: LM2651MTC-ADJ is Last Time Buy, while LM2651MTC-ADJ/NOPB is Active. The "/NOPB" suffix indicates lead-free plating. The LM2651MTC-ADJ/NOPB is the recommended choice for new designs.

Q: Can the LM2651MTC-ADJ/NOPB be used as a direct replacement in existing designs?

A: Yes. The LM2651MTC-ADJ/NOPB is a direct substitute with identical electrical performance, output voltage range (1.238V to 13V), output current (1.5A), switching frequency (300kHz), and 16-TSSOP package configuration. No circuit modifications are required.

Q: Are there any compliance or certification differences between these parts?

A: No. Both parts maintain identical ROHS3 compliance, moisture sensitivity level (MSL 1), REACH status, and ECCN classification. Certification and regulatory status are equivalent.

Q: What packaging formats are available for these parts?

A: The LM2651MTC-ADJ is available in standard packaging, while the LM2651MTC-ADJ/NOPB is supplied in Tube packaging. Both use the same 16-TSSOP (0.173", 4.40mm Width) case.

Q: Is the adjustable output voltage range identical between both parts?

A: Yes. Both the LM2651MTC-ADJ and LM2651MTC-ADJ/NOPB support adjustable output voltage from 1.238V to 13V with identical input voltage range (4V to 14V) and output current capacity (1.5A).