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LM3940ISX-3.3

Texas Instruments · TO-263 · Active

Part number
LM3940ISX-3.3
Manufacturer
Texas Instruments
Package
TO-263
Status
Active
Stock
Available / RFQ
Price
$2.75
Year / date code
2025

Datasheet

View on SJ Chip · Request a quote

Product Overview

LM3940ISX-3.3 from Texas Instruments in TO-263 is listed for electronic component sourcing at SJ Chip. Review technical specifications, package information, and nearby series parts below, then submit an RFQ to confirm stock, date code, and lead time.

Technical Specifications

Part Number
LM3940ISX-3.3
Manufacturer
Texas Instruments
Series
LM3940I
Package / Case
TO-263
Package Family
SOP
Pin / Ball Count (from marking)
263
Lifecycle Status
Active
Category
Power Management
Mounting Type
Surface Mount (SMT)

Electrical Characteristics

Device Class
DC-DC / LDO / power IC
Input / Output Range
Confirm VIN, VOUT, and current limit in the datasheet
Switching / Topology
Buck, boost, LDO, or controller — not drop-in across families
Thermal
PowerPAD / exposed pad soldering is often required for rated current
Package Constraint
TO-263 thermal land and pinout must match the layout

Package Information

Package
TO-263
Package Family
SOP
Mounting
Surface Mount (SMT)
Terminal Count (parsed)
263
Outline Note
Package marking on this page is for sourcing reference. Confirm body size, pitch, and land pattern from the manufacturer datasheet before layout.

Applications

LM3940ISX-3.3 is used on board power rails, industrial 12 V/24 V supplies, and point-of-load converters. Confirm VIN/VOUT, current, and the TO-263 thermal pad before layout. Nearby bucks/LDOs need compensation and footprint review.

Procurement notes

Confirm the full ordering code, package (TO-263), and quantity on RFQ. SJ Chip replies with stock, condition, and lead time. Nearby MPNs are for evaluation only.

Compare Similar Parts (LM3940I)

Potential Alternatives (TO-263)

FAQ

Where to buy LM3940ISX-3.3?

You can request LM3940ISX-3.3 from SJ Chip via the RFQ form on this page or the site-wide RFQ. We confirm manufacturer (Texas Instruments), package, quantity, and lead time on the quotation.

Is LM3940ISX-3.3 available?

Listed inventory shows 2,600 pcs. Lot, date code, and shippable quantity are confirmed on RFQ — treat the listing as availability to quote, not a guaranteed cart ship.

What is the package of LM3940ISX-3.3?

The sourcing listing shows package TO-263. Always verify body size, pitch, and land pattern against the Texas Instruments datasheet before PCB layout.

What are alternatives to LM3940ISX-3.3?

Potential alternatives include LM3940ISX-3.3/NOPB, LM3940IMPX-3.3, LM3940IMP-3.3 / LM3940IMPX-3.3/NOPB and other same-series or same-package listings — all require datasheet and pinout checks. These are similar stock for evaluation, not automatic drop-in replacements.

Sourcing information

Part NumberLM3940ISX-3.3
ManufacturerTexas Instruments
PackageTO-263
DescriptionTexas Instruments · LM3940ISX-3.3 · TO-263 package · electronic component sourcing
AvailabilityListed inventory: 2,600 pcs — confirm lot, date code, and quantity on RFQ
RFQSubmit the full part number and quantity through the RFQ form
Lead TimeLead time is confirmed on the quotation after RFQ. In-stock conventional lots often ship in 3–5 working days from Hong Kong; special, allocation, or obsolete lines are quoted separately.
ConditionCondition is stated on the quotation/PI (new, surplus, or EOL). Lots are inspected before shipment.

Requested path: /products/Texas Instruments/LM3940ISX-3.3