LM25010SD Equivalent & Substitute Parts

Part Overview

The LM25010SD is a buck switching regulator IC from Texas Instruments designed for step-down voltage conversion applications. It delivers positive adjustable output from 2.5V to 37V with 1A output current capability in a 10-WDFN exposed pad surface mount package. The main part number LM25010SD is currently listed as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement.

Substiute Parts

LM25010SD

Texas InstrumentsIn Stock: 1939LM25010SD Datasheet

Current PartRFQ

LM25010SD/NOPB

Texas InstrumentsIn Stock: 2194LM25010SD/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LM25010SD is determined by electrical and mechanical parameter equivalence across the following criteria:

• Identical topology (buck converter)
• Matching output configuration (positive adjustable)
• Equivalent voltage input and output ranges (6V to 42V input, 2.5V to 37V output)
• Same output current rating (1A)
• Identical package and pinout (10-WDFN exposed pad)
• Compatible switching frequency range (100kHz to 1MHz)
• Matching operating temperature range (-40°C to 125°C)

The LM25010SD/NOPB qualifies as a direct substitute based on full alignment with these parameters. The primary distinction is product status and packaging format, not electrical or mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

The LM25010SD/NOPB is the direct substitute for the obsolete LM25010SD. Both parts share identical electrical specifications and package geometry, ensuring pin-for-pin compatibility and circuit-level interchangeability.

The LM25010SD/NOPB offers two significant advantages: active product status ensures long-term availability and manufacturing support, and ROHS3 compliance satisfies regulatory requirements for new designs and procurement in regulated markets. The /NOPB designation indicates lead-free termination, aligning with modern environmental standards.

For applications requiring the LM25010SD, transition to LM25010SD/NOPB without circuit modification. Packaging format differs (Cut Tape & Digi-Reel versus Tape & Reel), but this affects procurement and handling only, not electrical performance or board-level integration.

Frequently Asked Questions (FAQ)

Q: Can LM25010SD/NOPB replace LM25010SD in existing designs?

A: Yes. The LM25010SD/NOPB is electrically and mechanically identical to the LM25010SD. Pin configuration, voltage ratings, current capacity, and thermal characteristics are equivalent. No circuit redesign is required.

Q: What does the /NOPB suffix indicate?

A: The /NOPB designation specifies lead-free (Pb-free) termination and RoHS3 compliance. This is a manufacturing and environmental specification, not a functional or electrical change.

Q: Are there differences in packaging between these parts?

A: Both use the 10-WDFN exposed pad package. The primary difference is the supply format: LM25010SD ships in Tape & Reel, while LM25010SD/NOPB is available in Cut Tape and Digi-Reel formats. Component specifications and board-level performance are unaffected.

Q: Why is the original LM25010SD listed as obsolete?

A: Obsolescence reflects Texas Instruments' product lifecycle management. The LM25010SD/NOPB represents the current active equivalent, incorporating modern compliance standards and manufacturing practices.

Q: What is the operating temperature range for both parts?

A: Both the LM25010SD and LM25010SD/NOPB operate from -40°C to 125°C junction temperature, supporting industrial and extended temperature applications.

Q: Can these parts be used interchangeably in high-reliability applications?

A: Yes, provided the application accepts RoHS3 compliance. The LM25010SD/NOPB meets modern regulatory and environmental standards. For legacy systems requiring non-compliant components, verify procurement availability of the original LM25010SD.