LM5000SDX-3 Equivalent & Substitute Parts

Part Overview

The LM5000SDX-3 is a multi-configuration adjustable switching regulator IC from Texas Instruments, designed for boost, flyback, and forward converter topologies. It delivers positive adjustable output from 3.1V to 80V with a maximum switch current of 1.35A, operating across an input voltage range of 3.1V to 40V. The device is housed in a 16-WFDFN exposed pad surface mount package.

The LM5000SDX-3 is classified as obsolete. Identifying equivalent substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production requirements for applications utilizing this regulator topology.

Substiute Parts

LM5000SDX-3

Texas InstrumentsIn Stock: 1026LM5000SDX-3 Datasheet

Current PartRFQ

LM5000SDX-3/NOPB

Texas InstrumentsIn Stock: 6001LM5000SDX-3/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LM5000SDX-3 is determined by strict equivalence across the following critical parameters:

• Topology: Boost, Flyback, Forward Converter
• Output Configuration: Positive
• Output Type: Adjustable
• Number of Outputs: 1
• Voltage - Input Range: 3.1V to 40V
• Voltage - Output Range: 3.1V to 80V (Switch)
• Current - Output: 1.35A (Switch)
• Frequency - Switching: 300kHz, 700kHz
• Operating Temperature: -40°C ~ 125°C (TJ)
• Package / Case: 16-WFDFN Exposed Pad
• Supplier Device Package: 16-WSON (5x5)

The LM5000SDX-3/NOPB is identified as a direct substitute based on complete parameter alignment with the main part number across all electrical and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

The LM5000SDX-3/NOPB is the direct equivalent substitute for the obsolete LM5000SDX-3. Both parts share identical electrical and mechanical specifications, including topology, voltage ranges, current ratings, switching frequency, package type, and thermal operating range.

The primary distinction between the two parts is product status and regulatory compliance. The LM5000SDX-3 is obsolete and RoHS non-compliant, while the LM5000SDX-3/NOPB is active and ROHS3 compliant. For new designs or ongoing production requiring regulatory compliance, the LM5000SDX-3/NOPB is the appropriate selection. Both parts are manufactured by Texas Instruments and are functionally interchangeable at the circuit level.

Frequently Asked Questions (FAQ)

Q: Can the LM5000SDX-3/NOPB be used as a direct replacement for the LM5000SDX-3?

A: Yes. The LM5000SDX-3/NOPB is a direct equivalent substitute. All electrical parameters, including input voltage range (3.1V to 40V), output voltage range (3.1V to 80V), switch current (1.35A), switching frequency (300kHz, 700kHz), and thermal operating range (-40°C to 125°C) are identical. The package type and pinout are also identical (16-WFDFN exposed pad, 16-WSON 5x5).

Q: What is the difference between LM5000SDX-3 and LM5000SDX-3/NOPB?

A: The primary differences are product status and RoHS compliance. The LM5000SDX-3 is obsolete and RoHS non-compliant. The LM5000SDX-3/NOPB is active and ROHS3 compliant. No electrical or mechanical differences exist between the two parts.

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

A: No. Both parts use the 16-WFDFN exposed pad package with a 16-WSON (5x5) supplier device package. Pinout and mechanical dimensions are identical.

Q: Which part should be selected for new designs?

A: The LM5000SDX-3/NOPB should be selected for new designs. It is active, ROHS3 compliant, and offers superior supply chain availability compared to the obsolete LM5000SDX-3.

Q: Are both parts suitable for boost, flyback, and forward converter topologies?

A: Yes. Both the LM5000SDX-3 and LM5000SDX-3/NOPB support boost, flyback, and forward converter topologies with adjustable positive output configuration.