LM34914SD Equivalent & Substitute Parts Reference

Part Overview

The LM34914SD from Texas Instruments is a power management IC categorized as a Buck Switching Regulator. It provides a positive adjustable output with a step-down function, supporting an output current of up to 1.25A and accommodating a wide input voltage range of 8V to 40V. The product is packaged in a 10-WFDFN Exposed Pad case suitable for surface mount applications. Due to its status as obsolete, it is necessary to identify substitute models with equivalent electrical and mechanical specifications for ongoing designs or maintenance requirements.

Substiute Parts

LM34914SD

Texas InstrumentsIn Stock: 2551LM34914SD Datasheet

Current PartRFQ

LM34914SD/NOPB

National SemiconductorIn Stock: 2322LM34914SD/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution is strictly determined by matching the following key parameters: electrical performance (topology, input/output voltage ranges, output current, switching frequency), output configuration (positive, adjustable), physical package (10-WFDFN Exposed Pad, 10-WSON (3x3)), and mounting type (surface mount). Substitute models are selected only if all these parameters are identical or directly compatible, without extrapolation or inference.

Parameter Comparison

Engineering Selection Recommendations

Selection between LM34914SD and LM34914SD/NOPB should be based on product status and applicable compliance attributes. With LM34914SD designated as obsolete, LM34914SD/NOPB presents an active substitute with matching electrical and mechanical parameters. RoHS compliance status should be reviewed according to specific project requirements.

Frequently Asked Questions (FAQ)

Q1: What parameters must match when substituting LM34914SD?
A1: The substitute must match topology, electrical performance (input/output voltage, current, switching frequency), output configuration, package type, and mounting method.

Q2: Is LM34914SD/NOPB identical in function and form to LM34914SD?
A2: LM34914SD/NOPB matches all listed electrical and mechanical parameters, ensuring functional and physical compatibility.

Q3: Does the package difference affect compatibility?
A3: Both parts use the 10-WFDFN Exposed Pad and 10-WSON (3x3) package, which maintains physical interchangeability for surface mount applications.

Q4: Should compliance status affect selection?
A4: RoHS and related compliance should be verified based on project-specific requirements. Main part LM34914SD is RoHS non-compliant; LM34914SD/NOPB compliance status is unspecified in the provided input.

Q5: Why is substitution necessary for LM34914SD?
A5: LM34914SD is marked obsolete, necessitating the use of active equivalents like LM34914SD/NOPB with equivalent technical specifications.