LM3100MH Equivalent & Substitute Parts

Part Overview

The LM3100MH is a buck switching regulator IC from Texas Instruments' SIMPLE SWITCHER® series, designed for step-down voltage conversion applications. It delivers positive adjustable output from 0.8V to 7.2V with 1.5A output current capability, operating across a 4.5V to 36V input range. The device is housed in a 20-PowerTSSOP surface mount package and features synchronous rectification with switching frequency up to 1MHz.

The LM3100MH carries a Last Time Buy product status, indicating discontinued production. Identifying equivalent and substitute parts is necessary to ensure design continuity and maintain supply chain reliability for new production runs and long-term support.

Substiute Parts

LM3100MH

Texas InstrumentsIn Stock: 5300LM3100MH Datasheet

Current PartRFQ

LM3100MH/NOPB

Texas InstrumentsIn Stock: 2570LM3100MH/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LM3100MH is determined by strict equivalence across all electrical and mechanical parameters. The critical parameters that define substitutability are:

• Buck topology with positive adjustable output configuration
• Output voltage range: 0.8V to 7.2V
• Output current: 1.5A
• Input voltage range: 4.5V to 36V
• Switching frequency: Up to 1MHz
• Synchronous rectifier functionality
• 20-PowerTSSOP package with identical pinout and thermal characteristics
• Operating temperature range: -40°C to 125°C
• Surface mount configuration

Only parts meeting all these specifications without deviation qualify as direct substitutes. The LM3100MH/NOPB variant is identified as the manufacturer-recommended substitute, differing only in product status classification.

Parameter Comparison

Engineering Selection Recommendations

The LM3100MH/NOPB is the direct substitute for the LM3100MH. Both parts are manufactured by Texas Instruments and maintain identical electrical and mechanical specifications across all critical parameters. The primary distinction is product status: the LM3100MH is designated Last Time Buy, while the LM3100MH/NOPB maintains Active status, ensuring continued availability and manufacturing support.

For new designs and production continuity, the LM3100MH/NOPB is the appropriate selection. Both variants carry ROHS3 compliance and REACH Unaffected status, meeting regulatory requirements. The MSL rating of 1 (Unlimited) indicates no moisture sensitivity constraints during storage and handling.

Frequently Asked Questions (FAQ)

Q: Can the LM3100MH/NOPB be used as a direct replacement for the LM3100MH?

A: Yes. The LM3100MH/NOPB is electrically and mechanically identical to the LM3100MH. All functional parameters, output specifications, input voltage ranges, current ratings, switching frequency, package dimensions, and thermal characteristics are equivalent. The difference is product lifecycle status only.

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

A: The "/NOPB" suffix designates a part without plumbum (lead-free) processing. Both the LM3100MH and LM3100MH/NOPB are ROHS3 compliant and lead-free; the suffix is a manufacturing designation that does not affect electrical or mechanical performance.

Q: Why is the LM3100MH marked as Last Time Buy?

A: Last Time Buy status indicates that Texas Instruments has discontinued production of this specific part number variant. The LM3100MH/NOPB remains in active production and is the recommended part for ongoing supply.

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

A: No. Both parts use the identical 20-PowerTSSOP package with 0.173" width and 4.40mm body width. Pinout, thermal pad configuration, and mechanical dimensions are identical.

Q: What are the compliance certifications for these parts?

A: Both parts are ROHS3 compliant, REACH Unaffected, and carry an MSL rating of 1 (Unlimited). The ECCN classification is EAR99, and the HTSUS code is 8542.39.0001.