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LM2673SX-3.3 — DPAK / D2PAK (TO-252/263) package (representative)
DPAK / D2PAK (TO-252/263)
Representative of package type
National Semiconductor Corp

LM2673SX-3.3

Buck Regulator · TO-263-7 (DDPAK) · Power Management
Part Status: NRND In demand
Data last refreshed Jul 28, 2026
Manufacturer
National Semiconductor Corp
Mfr Part #
LM2673SX-3.3
Series
LM2673
Category
Buck Regulator
Datasheet
View datasheet ↗
Availability & Pricing
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Product Attributes

Electrical & Parametric
Output Voltage3.3 V
Output Current3 A
Input Voltage8 V ~ 40 V
Physical & Thermal
Package / CaseTO-263-7 (DDPAK)
Mounting TypeSurface Mount
SeriesLM2673
Operating Temperature-40°C ~ 125°C
Classification & Lifecycle
CategoryBuck Regulator
TypePower Management
Part StatusNRND

3 A, 3.3 V fixed-output step-down switching regulator

Availability & Sourcing

3 sources
SourceMfrQtyDate CodeConditionStatus
Market NSC 370 0036 — Available RFQ
Market Texas Instrumen 14421 — — Available RFQ
Market NS 1805 — — Available RFQ

ZDI Stock — in our warehouse · Market — offers available through our sourcing network · Live — recent offers from our sourcing network.

Part Activity

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Recent search and sourcing activity for LM2673SX-3.3.

Engineering FAQ

What are the key specifications of LM2673SX-3.3?
Output Voltage: 3.3 V; Output Current: 3 A; Input Voltage: 8 V ~ 40 V.
What package is LM2673SX-3.3 supplied in?
LM2673SX-3.3 is supplied in the TO-263-7 (DDPAK) package, surface mount, rated -40°C ~ 125°C.
Can ZDI source LM2673SX-3.3 beyond the quantities shown?
Yes — ZD Integrated Circuits specializes in sourcing hard-to-find, obsolete, and excess electronic components through its global network, with counterfeit-avoidance inspection on every lot. Submit an RFQ with your target quantity for availability and pricing.

Documents & Media

Quality & Counterfeit Avoidance

ISO 9001 ERAI Member ESD Certified GIDEP Participant ZDI EQuality Process CAGE Code 1V8K2

ZD Integrated Circuits operates an ISO 9001-certified quality system incorporating JEDEC-standard process-control elements. In an era of global sourcing and internet procurement, standards compliance alone no longer assures component authenticity — so ZDI pioneered a multi-layered counterfeit-avoidance program: supplier analysis at the source-country level, detailed component analysis, defined inspection standards for all incoming devices, and stringent supplier rating and review. These programs let ZDI guarantee the integrity and the source of every component it ships.

Every lot moves through ZDI's EQuality Process™ — validation, QI-1 and QI-2/camera inspection, RoHS verification, bake and bag-and-tag, and QI-3 final inspection — with Quality-Manager disposition before release. Nonconforming material is quarantined; conforming material is warehoused or shipped.

✓Multi-stage EQuality Process™ inspection (QI-1 · QI-2/camera · QI-3)
✓Source-country supplier analysis, rating & review
✓Incoming inspection, RoHS verification, bake, full lot traceability
✓ESD-controlled handling · authentic parts guaranteed

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