LM34910SDX Equivalent & Substitute Parts

Part Overview

The LM34910SDX is a buck switching regulator IC from Texas Instruments designed for step-down voltage conversion with positive adjustable output. It delivers 1.25A output current across an input voltage range of 8V to 36V, with adjustable output voltage from 2.5V to 33V. The device is housed in a 10-WDFN exposed pad surface mount package.

The LM34910SDX carries an obsolete product status. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and access components with active manufacturing support and current compliance certifications.

Substiute Parts

LM34910SDX

Texas InstrumentsIn Stock: 9701LM34910SDX Datasheet

Current PartRFQ

LM34910SDX/NOPB

Texas InstrumentsIn Stock: 3395LM34910SDX/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LM34910SDX is determined by strict equivalence across the following critical parameters:

• Identical buck topology and step-down function
• Positive adjustable output configuration with single output
• Input voltage range: 8V to 36V minimum and maximum
• Output voltage range: 2.5V to 33V minimum and maximum
• Output current rating: 1.25A
• Surface mount package: 10-WDFN exposed pad (10-WSON 4x4)
• Operating temperature range: -40°C to 125°C

The LM34910SDX/NOPB qualifies as a direct substitute based on identical electrical specifications, package configuration, and thermal performance. The primary distinction is product status and compliance certification.

Parameter Comparison

Engineering Selection Recommendations

The LM34910SDX/NOPB is the direct substitute for the obsolete LM34910SDX. Both devices share identical electrical performance, thermal characteristics, and package specifications. The LM34910SDX/NOPB offers the following advantages:

• Active product status ensures ongoing manufacturing support and availability
• ROHS3 compliance meets current environmental and regulatory requirements
• Tape & Reel packaging supports automated assembly processes
• Identical pin configuration and electrical behavior enable direct board-level replacement without design modification

Selection of the LM34910SDX/NOPB is appropriate for new designs and production continuity where the LM34910SDX is no longer available.

Frequently Asked Questions (FAQ)

Q: Can the LM34910SDX/NOPB replace the LM34910SDX in existing designs?

A: Yes. The LM34910SDX/NOPB is electrically and mechanically identical to the LM34910SDX. Pin configuration, voltage ratings, current output, and thermal performance are equivalent. Direct substitution is possible without circuit modification.

Q: What is the difference between LM34910SDX and LM34910SDX/NOPB?

A: The primary differences are product status, compliance certification, and packaging format. The LM34910SDX is obsolete and RoHS non-compliant, while the LM34910SDX/NOPB is active, ROHS3 compliant, and supplied in Tape & Reel format. Electrical specifications are identical.

Q: Is the 10-WSON (4x4) package compatible with 10-WDFN exposed pad footprints?

A: Yes. The 10-WSON (4x4) is the supplier device package designation for the 10-WDFN exposed pad. Both terms refer to the same physical package configuration and are compatible with identical PCB footprints.

Q: What input and output voltage ranges does this regulator support?

A: The LM34910SDX and LM34910SDX/NOPB accept input voltages from 8V to 36V and provide adjustable output voltage from 2.5V to 33V at up to 1.25A output current.

Q: Are there any compliance or certification differences between the two parts?

A: Yes. The LM34910SDX/NOPB is ROHS3 compliant and carries active product status, making it suitable for current production and regulatory requirements. The LM34910SDX is RoHS non-compliant and obsolete.