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Fairchild Semiconductor

FAN21SV04MPX

Synchronous Buck Regulator · MLP-25 · Power Management
Part Status: Obsolete
Data last refreshed Jul 28, 2026
Manufacturer
Fairchild Semiconductor
Mfr Part #
FAN21SV04MPX
Series
FAN21SV04
Category
Synchronous Buck Regulator
Datasheet
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Availability & Pricing
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Product Attributes

Electrical & Parametric
Input Voltage4.5-24 V
Output Current4 A
Physical & Thermal
Package / CaseMLP-25
Mounting TypeSurface Mount
SeriesFAN21SV04
Operating Temperature-10°C ~ 85°C
Classification & Lifecycle
CategorySynchronous Buck Regulator
TypePower Management
Part StatusObsolete

4A, 4.5-24V input integrated synchronous buck regulator

Environmental & Export Classifications

RoHS Status
RoHS Compliant

Part Activity

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Specifications reviewed & updated · ZDI

Recent search and sourcing activity for FAN21SV04MPX.

Engineering FAQ

FAN21SV04MPX is marked Obsolete — how does ZDI assure authenticity?
Obsolete and end-of-life parts carry elevated counterfeit risk, which is exactly why ZDI routes every lot through the full EQuality Process™ — validation, QI-1 and QI-2/camera inspection, RoHS verification, bake and bag-and-tag, and QI-3 final inspection — with source-country supplier vetting and full lot traceability before release.
What are the key specifications of FAN21SV04MPX?
Input Voltage: 4.5-24 V; Output Current: 4 A.
What package is FAN21SV04MPX supplied in?
FAN21SV04MPX is supplied in the MLP-25 package, surface mount, rated -10°C ~ 85°C.
Can ZDI source FAN21SV04MPX 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

FAN21SV04MPX is marked Obsolete. Obsolete and end-of-life parts carry elevated counterfeit risk — exactly why ZDI routes them through the full EQuality Process™ with source-country supplier vetting, inspection, and traceability.

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