LM5008SDC Equivalent & Substitute Parts

Part Overview

The LM5008SDC is a buck switching regulator IC from Texas Instruments designed for step-down voltage conversion with positive adjustable output. It delivers 350mA output current across an input voltage range of 9.5V to 95V, with adjustable output voltage from 2.5V to 75V. The device operates at switching frequencies between 50kHz and 600kHz and is housed in an 8-WDFN exposed pad surface mount package.

The LM5008SDC is classified as obsolete. Identifying equivalent substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production or maintenance requirements for systems utilizing this regulator.

Substiute Parts

LM5008SDC

Texas InstrumentsIn Stock: 303590LM5008SDC Datasheet

Current PartRFQ

LM5008SDC/NOPB

Texas InstrumentsIn Stock: 27565LM5008SDC/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LM5008SDC is determined by strict equivalence across the following critical parameters:

• Topology & Function: Buck (step-down) switching regulator with positive adjustable output
• Electrical Specifications: Input voltage range 9.5V–95V, output voltage range 2.5V–75V, 350mA output current capability
• Switching Frequency: 50kHz–600kHz operating range
• Thermal Performance: Operating temperature range -40°C to 125°C (junction temperature)
• Package Compatibility: 8-WDFN exposed pad surface mount package (4x4mm)

The LM5008SDC/NOPB qualifies as a direct substitute based on identical electrical performance, thermal specifications, and package form factor. The primary distinction is product status and compliance certification.

Parameter Comparison

Engineering Selection Recommendations

The LM5008SDC/NOPB is the direct functional equivalent of the LM5008SDC. Both devices share identical electrical specifications, thermal operating range, and package form factor. The LM5008SDC/NOPB is classified as active product status, ensuring ongoing availability and supply chain support.

The LM5008SDC/NOPB carries ROHS3 compliance certification, whereas the original LM5008SDC is RoHS non-compliant. For applications subject to RoHS regulatory requirements or environmental compliance mandates, the LM5008SDC/NOPB is the appropriate selection. Both devices maintain REACH unaffected status and EAR99 export classification.

Selection between these parts should be based on product availability, supply chain requirements, and applicable regulatory compliance standards for the end application.

Frequently Asked Questions (FAQ)

Q: Can the LM5008SDC/NOPB be used as a direct replacement for the LM5008SDC?

A: Yes. The LM5008SDC/NOPB is electrically and mechanically equivalent. Both devices deliver identical performance across input voltage range (9.5V–95V), output voltage range (2.5V–75V), output current (350mA), switching frequency (50kHz–600kHz), and thermal specifications (-40°C to 125°C). The 8-WDFN exposed pad package is identical, enabling direct PCB substitution without layout modification.

Q: What is the significance of the "/NOPB" suffix?

A: The "/NOPB" designation indicates the device is supplied without plumbum (lead-free). This marking reflects RoHS3 compliance and lead-free manufacturing processes. The electrical and functional performance of the device is unchanged.

Q: Are there packaging differences between these parts?

A: The LM5008SDC/NOPB is available in Cut Tape (CT) and Digi-Reel® packaging options, whereas the original LM5008SDC packaging specification is not detailed. Both use the same 8-WSON (4x4mm) supplier device package. Packaging selection should align with assembly and procurement workflow requirements.

Q: Why is the LM5008SDC marked as obsolete?

A: Product obsolescence reflects Texas Instruments' lifecycle management. The LM5008SDC/NOPB remains in active production and is the recommended part for new designs and ongoing supply requirements.

Q: Does RoHS compliance affect circuit performance?

A: No. RoHS3 compliance in the LM5008SDC/NOPB reflects manufacturing process changes only. Electrical performance, thermal characteristics, and functional behavior remain identical to the non-compliant version.