LM34910SD Equivalent & Substitute Parts

Part Overview

The LM34910SD 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 33V with a maximum output current of 1.25A, operating across an input voltage range of 8V to 36V. The device is housed in a 10-WDFN exposed pad surface mount package.

The LM34910SD carries an obsolete product status. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support long-term production requirements for applications currently utilizing this regulator.

Substiute Parts

LM34910SD

Texas InstrumentsIn Stock: 8942LM34910SD Datasheet

Current PartRFQ

LM34910SD/NOPB

Texas InstrumentsIn Stock: 2066LM34910SD/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LM34910SD is determined by strict alignment across the following critical parameters:

• Function and topology (step-down buck converter)
• Output configuration (positive adjustable)
• Input voltage range (8V to 36V minimum/maximum)
• Output voltage range (2.5V to 33V minimum/maximum)
• Output current capability (1.25A)
• Package type and pinout (10-WDFN exposed pad, 10-WSON 4x4)
• Operating temperature range (-40°C to 125°C)
• Surface mount compatibility

The LM34910SD/NOPB qualifies as a direct substitute based on identical electrical specifications and package configuration. The primary distinction between these parts is product status and compliance certification.

Parameter Comparison

Engineering Selection Recommendations

The LM34910SD/NOPB is the direct substitute for the obsolete LM34910SD. Both parts share identical electrical and mechanical specifications, ensuring pin-for-pin and functional compatibility.

The LM34910SD/NOPB carries an active product status, providing assured long-term availability and supply chain support. This part meets ROHS3 compliance requirements, whereas the original LM34910SD is RoHS non-compliant. For applications subject to RoHS regulations or environmental compliance mandates, the LM34910SD/NOPB is the appropriate selection.

Both parts maintain identical moisture sensitivity levels and regulatory classifications (REACH Unaffected, ECCN EAR99), ensuring equivalent handling and export compliance.

Frequently Asked Questions (FAQ)

Q: Can the LM34910SD/NOPB be used as a direct replacement for the LM34910SD?

A: Yes. The LM34910SD/NOPB is electrically and mechanically identical to the LM34910SD. Both parts feature the same input/output voltage ranges, output current rating, package type, and operating temperature specifications. The primary differences are product status (active vs. obsolete) and RoHS compliance certification.

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

A: The "/NOPB" suffix designates a part without plumbum (lead-free) processing. This marking indicates RoHS3 compliance and the absence of lead in the component manufacturing process.

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

A: No. Both the LM34910SD and LM34910SD/NOPB use the 10-WDFN exposed pad package with a 4x4mm footprint. Pinout and PCB layout compatibility are maintained.

Q: Which part should be selected for new designs?

A: The LM34910SD/NOPB should be selected for new designs. It carries active product status, ensuring continued availability and support. Its ROHS3 compliance also aligns with current environmental and regulatory standards.

Q: Is the LM34910SD still available for existing production?

A: The LM34910SD is classified as obsolete. While limited inventory may remain from distributors, the LM34910SD/NOPB is the recommended source for ongoing production requirements.