Alternatives to Texas Instruments LP3966ESX-ADJ
Texas Instruments LP3966ESX-ADJ and its qualified second sources, compared on form/fit/function, stock, lifecycle and price — the same checks Parter runs inside a BOM.
 LP3966ESX-ADJTexas Instruments | LP3966ESX-ADJ/NOPBTexas Instruments | LP3966ES-ADJ/NOPBTexas Instruments | +3more | |
|---|---|---|---|---|
| FFF Compatibility | Same TO-263-5 (DDPAK-5) package with identical pinout and layout compatibility.Same package dimensions and footprint, requiring no PCB layout modifications.Identical electrical characteristics, including 7V max input, 3A output, and adjustable voltage range. | Same TO-263-5 (DDPAK-5) package and pinout layout.Same physical dimensions and footprint.Identical electrical behavior. | ||
 AI Summary | LP3966ESX-ADJ by Texas Instruments: Linear Voltage Regulator IC Positive Adjustable 1 Output 3A TO-263 (DDPAK-5). | This is the official RoHS-compliant (lead-free) replacement from Texas Instruments. It offers 100% drop-in compatibility and identical performance characteristics without requiring any board redesign.
| This is the tube-packaged variant of the lead-free replacement. It is electrically and physically identical to the original and the Tape & Reel option, only differing in the delivery packaging format.
| |
| Lifecycle Status | Obsolete | Active | Active | |
| Market Availability | In stock | In stock | In stock | |
| REACH | REACH | REACH | REACH | |
| RoHS | RoHS | RoHS | RoHS | |
| Description | Linear Voltage Regulator IC Positive Adjustable 1 Output 3A TO-263 (DDPAK-5) | Linear Voltage Regulator IC Positive Adjustable 1 Output 3A TO-263 (DDPAK-5) | Linear Voltage Regulator IC Positive Adjustable 1 Output 3A TO-263 (DDPAK-5) | |
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments | |
| Type | Power Management (PMIC) | Power Management (PMIC) | Power Management (PMIC) | |
| Datasheet | Open | Open | Open | |
| Lead Time | 36 weeks | 16 weeks | 16 weeks | |
| Country of Origin | - | - | - | |
| Export Control Class Number | EAR99 | EAR99 | EAR99 | |
| HTSUS Code | 8542.39.0070 | - | - | |
| Moisture Sensitivity Level | 3 (168 Hours) | - | - | |
| Output Type | Adjustable | - | - | |
| Mounting Type | Surface Mount | - | - | |
| Package / Case | TO-263-6, D2PAK (5 Leads + Tab), TO-263BA | - | - | |
| Control Features | Enable | - | - | |
| Current - Output | 3A | - | - | |
| Protection Features | Over Current, Over Temperature, Short Circuit | - | - | |
| Number of Regulators | 1 | - | - | |
| Output Configuration | Positive | - | - |
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Related parts
| Part | Market availability | Lifecycle | Alternatives available |
|---|---|---|---|
 LP3966ES-3.3Texas Instruments | Discontinued | Obsolete | 4Alternatives availableSee Alternatives |
 LP38692SD-ADJTexas Instruments | Discontinued | Obsolete | 5Alternatives availableSee Alternatives |
| LP3961ES-1.8Texas Instruments | Discontinued | Obsolete | 5Alternatives availableSee Alternatives |
 LP3982IMM-ADJTexas Instruments | In stock | Obsolete | 4Alternatives availableSee Alternatives |
| LP3965ES-5.0 NOPBTexas Instruments | Non-stock | Obsolete | 2Alternatives availableSee Alternatives |
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Frequently asked questions
Yes. The Texas Instruments LP3966ESX-ADJ is marked obsolete, so the manufacturer has discontinued it and any remaining supply is limited to distributor stock. The qualified second sources on this page are active parts you can design in today.
The closest qualified second sources for the Texas Instruments LP3966ESX-ADJ are the LP3966ESX-ADJ/NOPB (Texas Instruments) and the LP3966ES-ADJ/NOPB (Texas Instruments), out of 5 matched alternatives in total. Each is compared against the original on fit, form and function in the table above.
Not always. The alternatives to the LP3966ESX-ADJ are matched on function but can differ in package, pinout or a key parameter, so review the fit/form/function notes in the table and the datasheet before designing one in.
The LP3966ESX-ADJ (Texas Instruments) is a part in the Power Management (PMIC) category. This page lists qualified, cross-referenced replacements for it with a side-by-side comparison.
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