LM2727MTC Buck Regulator Controller IC Equivalent & Substitute Parts

Part Overview

The LM2727MTC is a buck regulator positive output step-down DC-DC controller IC manufactured by Texas Instruments in a 14-TSSOP package. This component functions as a transistor driver for step-down topology applications with a single output phase. The LM2727MTC is classified as obsolete product status, making identification of active equivalent parts essential for ongoing design support and procurement continuity.

Substiute Parts

LM2727MTC

Texas InstrumentsIn Stock: 1746LM2727MTC Datasheet

Current PartRFQ

LM2727MTC/NOPB

Texas InstrumentsIn Stock: 981LM2727MTC/NOPB Datasheet

DirectRFQ

LM2737MTC/NOPB

Texas InstrumentsIn Stock: 5494LM2737MTC/NOPB Datasheet

Parametric EquivalentRFQ

LM2742MTC/NOPB

Texas InstrumentsIn Stock: 911LM2742MTC/NOPB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LM2727MTC is determined by strict equivalence across the following critical parameters:

• Output topology: Buck (step-down)
• Output configuration: Positive
• Number of outputs: 1
• Output phases: 1
• Supply voltage range: 4.5V ~ 5.5V
• Switching frequency range: 50kHz ~ 2MHz
• Maximum duty cycle: 90%
• Synchronous rectifier capability: Yes
• Control features: Current Limit, Enable, Frequency Control, Power Good, Soft Start
• Operating temperature range: -40°C ~ 125°C (TJ)
• Package: 14-TSSOP
• Mounting type: Surface Mount

The LM2727MTC/NOPB, LM2737MTC/NOPB, and LM2742MTC/NOPB meet all these criteria and are classified as parametric equivalents. The primary distinction is product status: LM2727MTC/NOPB, LM2737MTC/NOPB, and LM2742MTC/NOPB are active products, while the base LM2727MTC is obsolete.

Parameter Comparison

Engineering Selection Recommendations

For new designs and ongoing procurement, LM2727MTC/NOPB, LM2737MTC/NOPB, or LM2742MTC/NOPB are the recommended active alternatives to the obsolete LM2727MTC. All three substitute parts maintain identical electrical and mechanical specifications while offering active product status and ROHS3 compliance.

LM2727MTC/NOPB provides direct part number continuity with the original design. LM2737MTC/NOPB and LM2742MTC/NOPB offer parametric equivalence with higher inventory availability. Selection between these three active parts should be based on procurement lead time, inventory availability, and cost considerations, as all three are functionally interchangeable within the specified electrical and thermal operating parameters.

Frequently Asked Questions (FAQ)

Q: Can LM2727MTC/NOPB, LM2737MTC/NOPB, and LM2742MTC/NOPB be used interchangeably with the LM2727MTC?

A: Yes. All three parts are parametric equivalents with identical electrical specifications, output topology, control features, operating temperature range, and 14-TSSOP package configuration. The primary differences are product status (active versus obsolete) and RoHS compliance level.

Q: What is the difference between LM2727MTC and LM2727MTC/NOPB?

A: The LM2727MTC is obsolete and RoHS non-compliant. The LM2727MTC/NOPB is the active equivalent with ROHS3 compliance and tube packaging. Both share identical electrical and mechanical specifications.

Q: Are LM2737MTC/NOPB and LM2742MTC/NOPB true substitutes or just similar parts?

A: LM2737MTC/NOPB and LM2742MTC/NOPB are parametric equivalents. They match all critical electrical parameters including supply voltage range, switching frequency range, duty cycle, synchronous rectifier capability, control features, operating temperature range, and package type. The base product numbers differ (LM2737 and LM2742 versus LM2727), but functional equivalence is complete within the specified parameters.

Q: Does package type remain the same across all substitute parts?

A: Yes. All parts use the 14-TSSOP package with 0.173" width and 4.40mm dimensions. Surface mount mounting type is consistent across all alternatives.

Q: What compliance certifications apply to the substitute parts?

A: LM2727MTC/NOPB, LM2737MTC/NOPB, and LM2742MTC/NOPB are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. The original LM2727MTC is RoHS non-compliant.