LM2731XMF/NOPB Equivalent & Substitute Parts

Part Overview

The LM2731XMF/NOPB is a boost switching regulator IC manufactured by Texas Instruments, designed for step-up voltage conversion applications. This device operates as a positive adjustable output regulator with a single output configuration and 1.8A switch current capability. The part is classified as Last Time Buy, indicating end-of-life status. Alternative components are necessary for new designs or when inventory becomes unavailable.

Substiute Parts

LM2731XMF/NOPB

Texas InstrumentsIn Stock: 17434LM2731XMF/NOPB Datasheet

Current PartRFQ

TLV61048DBVR

Texas InstrumentsIn Stock: 35496TLV61048DBVR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LM2731XMF/NOPB is determined by the following critical parameters:

• Topology: Boost (step-up) switching regulator configuration
• Output Type: Positive adjustable voltage regulation
• Input Voltage Compatibility: Minimum 2.7V input support
• Output Voltage Range: Capability to reach 2.7V minimum and extend to at least 22V maximum
• Current Handling: Output current rating of 1.8A or greater
• Package Compatibility: Surface mount package with compatible pinout and thermal characteristics
• Temperature Range: -40°C to 125°C operating specification
• Regulatory Compliance: ROHS3 compliance and EAR99 classification

The TLV61048DBVR meets the core functional requirements as a boost switching regulator with positive adjustable output. However, parameter differences exist in input voltage range, output voltage maximum, and switching frequency that must be evaluated for specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

The TLV61048DBVR is an active product from Texas Instruments and represents a viable alternative for applications within its specified operating parameters. Both devices maintain ROHS3 compliance and EAR99 classification, ensuring regulatory consistency.

Key considerations for selection:

• The TLV61048DBVR has a lower maximum input voltage (5.5V vs. 14V), restricting its use in applications requiring higher input voltage operation.
• The TLV61048DBVR has a lower maximum output voltage (14V vs. 22V), limiting applications requiring higher output voltage levels.
• The TLV61048DBVR minimum output voltage is 3.3V, which is higher than the LM2731XMF/NOPB minimum of 2.7V.
• The TLV61048DBVR uses a SOT-23-6 package versus the SOT-23-5 package of the original part, requiring PCB layout modification.
• The TLV61048DBVR active product status ensures continued availability and support, whereas the LM2731XMF/NOPB is end-of-life.

Frequently Asked Questions (FAQ)

Q: Can the TLV61048DBVR directly replace the LM2731XMF/NOPB without circuit modifications?

A: Direct replacement is not possible due to package differences (SOT-23-6 vs. SOT-23-5) and parameter variations. PCB layout changes are required, and circuit design must be verified against the TLV61048DBVR specifications.

Q: What are the main parameter differences affecting substitution?

A: The primary differences are input voltage range (TLV61048DBVR limited to 5.5V maximum), output voltage range (TLV61048DBVR limited to 14V maximum), minimum output voltage (3.3V vs. 2.7V), and package configuration (SOT-23-6 vs. SOT-23-5).

Q: Is the TLV61048DBVR suitable for applications requiring 22V output?

A: No. The TLV61048DBVR maximum output voltage is 14V, making it unsuitable for applications requiring the full 22V output range of the LM2731XMF/NOPB.

Q: Are both devices compliant with the same regulatory standards?

A: Yes. Both the LM2731XMF/NOPB and TLV61048DBVR are ROHS3 compliant and classified as EAR99, ensuring equivalent regulatory status.

Q: What is the significance of the product status difference?

A: The LM2731XMF/NOPB is Last Time Buy (end-of-life), while the TLV61048DBVR is Active. The active status ensures continued manufacturing, availability, and technical support for the TLV61048DBVR.