LM5002SDX Equivalent & Substitute Parts

Part Overview

The LM5002SDX is a multi-configuration adjustable switching regulator IC from Texas Instruments, designed for boost, flyback, forward converter, and SEPIC topologies. It supports positive, isolation-capable output configurations with adjustable voltage output ranging from 3.1V to 76V and a maximum switch current of 400mA. The device operates across an input voltage range of 3.1V to 75V with a switching frequency range of 50kHz to 1.5MHz.

The LM5002SDX is currently listed as obsolete. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production or maintenance requirements for systems utilizing this regulator IC.

Substiute Parts

LM5002SDX

Texas InstrumentsIn Stock: 863LM5002SDX Datasheet

Current PartRFQ

LM5002SDX/NOPB

Texas InstrumentsIn Stock: 3503LM5002SDX/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LM5002SDX is determined by strict equivalence across the following critical parameters:

• Topology and Function: Boost, Flyback, Forward Converter, SEPIC switching regulator with Step-Up and Step-Up/Step-Down capability
• Output Configuration: Positive, Isolation Capable
• Voltage Specifications: Input range 3.1V to 75V; Output range 3.1V to 76V (adjustable)
• Current Rating: 400mA switch current
• Switching Frequency: 50kHz to 1.5MHz operational range
• Package: 8-WDFN Exposed Pad (8-WSON 4x4)
• Temperature Range: -40°C to 125°C (TJ)

Substitute parts must match all electrical and mechanical parameters without deviation. Product status and compliance certifications are secondary considerations that do not affect functional substitutability but influence procurement decisions.

Parameter Comparison

Engineering Selection Recommendations

The LM5002SDX/NOPB is a direct functional equivalent to the LM5002SDX. Both devices are identical in electrical specifications, topology, and package configuration. The primary distinction is product status and compliance certification.

The LM5002SDX is obsolete, whereas the LM5002SDX/NOPB maintains active product status with ROHS3 compliance. For new designs or ongoing production requiring regulatory compliance with modern environmental standards, the LM5002SDX/NOPB is the appropriate selection. For legacy system maintenance where RoHS compliance is not a requirement, either part may be used interchangeably based on availability and procurement constraints.

Frequently Asked Questions (FAQ)

Q: Can the LM5002SDX/NOPB be used as a direct replacement for the LM5002SDX?

A: Yes. Both parts are electrically and mechanically identical. They share identical voltage specifications (3.1V to 75V input, 3.1V to 76V output), current ratings (400mA switch), switching frequency range (50kHz to 1.5MHz), operating temperature range (-40°C to 125°C), and package configuration (8-WDFN Exposed Pad, 8-WSON 4x4). Pin-for-pin compatibility is assured.

Q: What is the difference between LM5002SDX and LM5002SDX/NOPB?

A: The LM5002SDX/NOPB designation includes "/NOPB" (No Plumbum/Lead-Free) marking and carries ROHS3 compliance certification. The LM5002SDX is listed as obsolete and RoHS non-compliant. Functionally and electrically, the devices are identical.

Q: Are there any package or pinout differences?

A: No. Both parts use the 8-WDFN Exposed Pad package (8-WSON 4x4 supplier designation). Pinout, pad layout, and mechanical dimensions are identical.

Q: Which part should be selected for new designs?

A: The LM5002SDX/NOPB should be selected for new designs. It maintains active product status and meets current environmental compliance requirements (ROHS3). The LM5002SDX is obsolete and should not be specified for new applications.

Q: Can these parts be used in boost, flyback, forward converter, and SEPIC topologies?

A: Yes. Both the LM5002SDX and LM5002SDX/NOPB support all four topologies: boost, flyback, forward converter, and SEPIC. The adjustable output configuration and wide input/output voltage range enable flexible switching regulator implementations across these converter types.

Q: What is the maximum output current rating?

A: The maximum switch current is 400mA for both parts. This rating applies to the internal switch and determines the maximum load current capability in the application circuit.