Part Details for LM2940SX-12 by Texas Instruments
Results Overview of LM2940SX-12 by Texas Instruments
- Distributor Offerings: (2 listings)
- Number of FFF Equivalents: (1 replacement)
- CAD Models: (Request Part)
- Number of Functional Equivalents: (1 option)
- Part Data Attributes: (Available)
- Reference Designs: (Not Available)
Tip: Data for a part may vary between manufacturers. You can filter for manufacturers on the top of the page next to the part image and part number.
LM2940SX-12 Information
LM2940SX-12 by Texas Instruments is a Linear Regulator IC.
Linear Regulator ICs are under the broader part category of Power Circuits.
A power circuit delivers electricity in order to operate a load for an electronic device. Power circuits include transformers, generators and switches. Read more about Power Circuits on our Power Circuits part category page.
Price & Stock for LM2940SX-12
| Part # | Distributor | Description | Stock | Price | Buy | |
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DISTI #
296-LM2940SX-12CT-ND
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DigiKey | IC REG LINEAR 12V 1A TO263 Min Qty: 1 Lead time: 12 Weeks Container: Cut Tape (CT), Digi-Reel®, Tape & Reel (TR) |
463 In Stock |
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$1.3212 / $2.6800 | Buy Now |
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Win Source Electronics | LM2940-N/LM2940C 1A Low Dropout Regulator | IC REG LIN 12V 1A DDPAK/TO263-3 | 1300 |
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$1.6200 / $2.4300 | Buy Now |
Part Details for LM2940SX-12
LM2940SX-12 CAD Models
LM2940SX-12 Part Data Attributes
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LM2940SX-12
Texas Instruments
Buy Now
Datasheet
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LM2940SX-12
Texas Instruments
1-A, 26-V, high-PSRR, low-dropout voltage regulator 3-DDPAK/TO-263 -40 to 125
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| Pbfree Code | Yes | |
| Rohs Code | No | |
| Part Life Cycle Code | Obsolete | |
| Ihs Manufacturer | TEXAS INSTRUMENTS INC | |
| Part Package Code | D2PAK | |
| Pin Count | 4 | |
| Reach Compliance Code | not_compliant | |
| ECCN Code | EAR99 | |
| HTS Code | 8542.39.00.01 | |
| Samacsys Manufacturer | Texas Instruments | |
| Adjustability | FIXED | |
| Dropout Voltage1-Max | 1 V | |
| Dropout Voltage1-Nom | 0.5 V | |
| Input Voltage Absolute-Max | 60 V | |
| Input Voltage-Max | 26 V | |
| Input Voltage-Min | 13.6 V | |
| JESD-30 Code | R-PSSO-G3 | |
| JESD-609 Code | e0 | |
| Length | 10.16 mm | |
| Line Regulation-Max | 0.12% | |
| Load Regulation-Max | 0.2% | |
| Moisture Sensitivity Level | 3 | |
| Number of Functions | 1 | |
| Number of Outputs | 1 | |
| Number of Terminals | 3 | |
| Operating Temperature TJ-Max | 125 °C | |
| Operating Temperature TJ-Min | -40 °C | |
| Operating Temperature-Max | 85 °C | |
| Operating Temperature-Min | -40 °C | |
| Output Current1-Max | 1 A | |
| Output Voltage1-Max | 12.6 V | |
| Output Voltage1-Min | 11.4 V | |
| Output Voltage1-Nom | 12 V | |
| Package Body Material | PLASTIC/EPOXY | |
| Package Code | TO-263 | |
| Package Equivalence Code | SMSIP3H,.55TB | |
| Package Shape | RECTANGULAR | |
| Package Style | SMALL OUTLINE | |
| Packing Method | TR | |
| Peak Reflow Temperature (Cel) | 235 | |
| Qualification Status | Not Qualified | |
| Regulator Type | FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR | |
| Seated Height-Max | 4.79 mm | |
| Surface Mount | YES | |
| Technology | BIPOLAR | |
| Terminal Finish | Tin/Lead (Sn/Pb) | |
| Terminal Form | GULL WING | |
| Terminal Pitch | 2.54 mm | |
| Terminal Position | SINGLE | |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED | |
| Voltage Tolerance-Max | 5% | |
| Width | 8.64 mm |
Alternate Parts for LM2940SX-12
This table gives cross-reference parts and alternative options found for LM2940SX-12. The Form Fit Function (FFF) tab will give you the options that are more likely to serve as direct pin-to-pin alternates or drop-in parts. The Functional Equivalents tab will give you options that are likely to match the same function of LM2940SX-12, but it may not fit your design. Always verify details of parts you are evaluating, as these parts are offered as suggestions for what you are looking for and are not guaranteed.
| Part Number | Manufacturer | Composite Price | Description | Compare |
|---|---|---|---|---|
| LM2940SX-12/NOPB | National Semiconductor Corporation | Check for Price | IC VREG 12 V FIXED POSITIVE LDO REGULATOR, 1 V DROPOUT, PSSO3, TO-263, 3 PIN, Fixed Positive Single Output LDO Regulator | LM2940SX-12 vs LM2940SX-12/NOPB |
LM2940SX-12 Frequently Asked Questions (FAQ)
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The maximum input voltage that can be applied to the LM2940SX-12 is 26V, but it's recommended to keep it below 20V for reliable operation.
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The LM2940SX-12 is rated for operation up to 125°C, but its performance may degrade at high temperatures. It's recommended to derate the output current and voltage at high temperatures.
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To ensure stability, make sure to use a minimum output capacitance of 22uF, and keep the input and output capacitors close to the device. Also, avoid using long leads or wires that can cause oscillations.
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No, the LM2940SX-12 is a positive voltage regulator and cannot be used as a negative voltage regulator. For negative voltage regulation, consider using a different device such as the LM2990.
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The minimum input voltage required for the LM2940SX-12 to operate is around 14.5V, but it's recommended to keep it above 15V for reliable operation.