800-219-9001 RFQ
LM2678SX-12 — DPAK / D2PAK (TO-252/263) package (representative)
DPAK / D2PAK (TO-252/263)
Representative of package type
National Semiconductor Corp

LM2678SX-12

Buck Switching Regulator · TO-263-7 (DDPAK) · Analog
Data last refreshed Jun 19, 2026
Manufacturer
National Semiconductor Corp
Mfr Part #
LM2678SX-12
Series
LM2678
Category
Buck Switching Regulator
Datasheet
View datasheet ↗
Availability & Pricing
Unit PriceRequest a Quote
Request a Quote → Check Live Availability

Live pricing on request · most quotes same business day

Product Attributes

Electrical & Parametric
Output Current5 A
Output Voltage12 V fixed
Input Voltage Range15 V to 40 V
Physical & Thermal
Package / CaseTO-263-7 (DDPAK)
Mounting TypeSurface Mount
SeriesLM2678
Operating Temperature-40°C ~ 125°C
Classification & Lifecycle
CategoryBuck Switching Regulator
TypeAnalog

5 A step-down switching regulator, fixed 12 V output

Part Activity

recent searches, RFQs & offers
LM2678SX-12 viewed on the web · Web User
LM2678SX-12 viewed on the web · Web User
LM2678SX-12 viewed on the web · Web User
LM2678SX-12 viewed on the web · Web User
LM2678SX-12 viewed on the web · Web User
LM2678SX-12 viewed on the web · Web User

Recent search and sourcing activity for LM2678SX-12.

Engineering FAQ

What are the key specifications of LM2678SX-12?
Output Current: 5 A; Output Voltage: 12 V fixed; Input Voltage Range: 15 V to 40 V.
What package is LM2678SX-12 supplied in?
LM2678SX-12 is supplied in the TO-263-7 (DDPAK) package, surface mount, rated -40°C ~ 125°C.
Can ZDI source LM2678SX-12 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

Related Parts

from National Semiconductor Corp

Need LM2678SX-12?

ZD Integrated Circuits sources hard-to-find, obsolete, and excess components worldwide — pricing and availability, fast.

Request a Quote →