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LM2576T-3.3 — TO-220 package (representative)
TO-220
Representative of package type
National Semiconductor Corp

LM2576T-3.3

Buck Switching Regulator · TO-220-5 · Analog
Part Status: NRND
Data last refreshed Jun 18, 2026
Manufacturer
National Semiconductor Corp
Mfr Part #
LM2576T-3.3
Series
LM2576
Category
Buck Switching Regulator
Datasheet
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Product Attributes

Electrical & Parametric
Output Current3 A
Output Voltage3.3 V
Input Voltage Range4 V to 40 V
Physical & Thermal
Package / CaseTO-220-5
Mounting TypeThrough Hole
SeriesLM2576
Operating Temperature-40°C ~ 125°C
Classification & Lifecycle
CategoryBuck Switching Regulator
TypeAnalog
Part StatusNRND

3 A step-down switching regulator, fixed 3.3 V output, 4-40 V input

Availability & Sourcing

8 sources
SourceMfrQtyDate CodeConditionStatus
Market NS 315 — — Available RFQ
Market NSC 270 11 — Available RFQ
Market NSC 1 200942 — Available RFQ
Market TI 6000 25+ — Available RFQ
Market TI 21084 — — Available RFQ
Market National Semico 13168 — — Available RFQ
Market Texas Instrumen 6000 — — Available RFQ
Market TI 5000 23+ — Available RFQ

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Engineering FAQ

What are the key specifications of LM2576T-3.3?
Output Current: 3 A; Output Voltage: 3.3 V; Input Voltage Range: 4 V to 40 V.
What package is LM2576T-3.3 supplied in?
LM2576T-3.3 is supplied in the TO-220-5 package, through hole, rated -40°C ~ 125°C.
Can ZDI source LM2576T-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
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