LM27313XMFX Equivalent & Substitute Parts

Part Overview

The LM27313XMFX is a boost switching regulator IC from Texas Instruments designed for positive adjustable output applications. It delivers 800mA switch current with a fixed 5V minimum output and adjustable maximum output up to 28V, operating across an input range of 2.7V to 14V. The device is housed in a SC-74A/SOT-753 package suitable for surface mount applications.

The LM27313XMFX carries an obsolete product status. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production requirements for applications currently utilizing this regulator.

Substiute Parts

LM27313XMFX

Texas InstrumentsIn Stock: 38197LM27313XMFX Datasheet

Current PartRFQ

LM27313XMFX/NOPB

Texas InstrumentsIn Stock: 29106LM27313XMFX/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LM27313XMFX is determined by strict equivalence across the following critical parameters:

• Topology & Function: Boost (step-up) switching regulator with positive adjustable output
• Electrical Specifications: Input voltage range 2.7V–14V, output adjustable 5V–28V, 800mA switch current, 1.6MHz switching frequency
• Package Compatibility: SC-74A/SOT-753 surface mount package (SOT-23-5 supplier designation)
• Operating Temperature Range: -40°C to 125°C junction temperature
• Output Configuration: Single positive adjustable output

The LM27313XMFX/NOPB is a direct manufacturer equivalent that maintains identical electrical and mechanical specifications while offering improved product status and regulatory compliance.

Parameter Comparison

Engineering Selection Recommendations

The LM27313XMFX/NOPB is the direct substitute for the obsolete LM27313XMFX. Both parts share identical electrical performance and mechanical compatibility. The primary distinction is product lifecycle status and regulatory compliance:

• LM27313XMFX: Obsolete status with RoHS non-compliant designation
• LM27313XMFX/NOPB: Active product status with ROHS3 compliance

For new designs or ongoing production requiring regulatory compliance with modern environmental standards, the LM27313XMFX/NOPB is the appropriate selection. For legacy applications where RoHS compliance is not mandated, either part meets the electrical and mechanical requirements identically.

Frequently Asked Questions (FAQ)

Q: Can the LM27313XMFX/NOPB be used as a direct replacement for the LM27313XMFX?

A: Yes. Both parts are electrically and mechanically identical. They share the same input/output voltage ranges (2.7V–14V input, 5V–28V adjustable output), 800mA switch current, 1.6MHz switching frequency, and SC-74A/SOT-753 package. The primary difference is product status and RoHS compliance.

Q: What does the "/NOPB" suffix indicate?

A: The "/NOPB" designation indicates the part is supplied without plumbum (lead-free), reflecting RoHS3 compliance. This is a packaging and compliance designation, not a functional difference.

Q: Are there any package or pinout differences between these parts?

A: No. Both parts use the identical SC-74A/SOT-753 surface mount package with SOT-23-5 supplier designation. Pinout and PCB footprint compatibility is maintained.

Q: What is the moisture sensitivity level for these parts?

A: Both parts carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.

Q: Can these parts be used interchangeably in existing designs?

A: Yes, provided the design does not have specific RoHS compliance restrictions. The electrical performance, thermal characteristics, and mechanical form factor are identical between both parts.