Congratulations On Your Successful Submission
Submission Failure
LM2940S-12
1-A, 26-V, high-PSRR, low-dropout voltage regulator 3-DDPAK/TO-263 -40 to 125
LM2940S-12
1-A, 26-V, high-PSRR, low-dropout voltage regulator 3-DDPAK/TO-263 -40 to 125
-
Manufacturer Part # : LM2940S-12
-
Package/Case: TO263
-
Brand: Texas Instruments
-
Product Categories : Voltage Regulators - Linear, Low Drop Out (LDO) Regulators
Quality Assurance
Quality Assurance
All parts procured from our supply chain network undergo a rigorous incoming inspection process. This meticulous inspection ensures that the parts received by our customers are authentic and meet the required standards. Additionally, we maintain detailed records of these inspections to ensure transparency and traceability throughout the supply chain.
Certification
We have successfully obtained various certification standards and have established our own professional testing laboratory. This ensures that every product we supply to our customers meets the highest quality standards. We adhere to strict testing protocols to maintain the consistency and accuracy of our products. To ensure that our products are original and genuine, we also collaborate with reputable third-party testing facilities to conduct rigorous quality testing. Our commitment to quality extends to meeting industry, legal, regulatory, and ISO 9001:2015 requirements.
Shipping & Payment
Shipping & Payment
About Shipping
We generally ship orders within a few business days through reliable shipping carriers such as FedEx, SF, UPS, or DHL. We also have support for other shipping methods. If you would like to inquire about specific shipping details or costs, please don't hesitate to reach out to us.
About Payment
We accept various payment methods, including VISA, MasterCard, UnionPay, Western Union, PayPal, and other channels.
If you have a specific payment method in mind or would like to inquire about rates and other details, please feel free to contact us.
WireTransfer
Paypal
CreditCard
WesternUnion
MoneyGram
Service & Packaging
Service & Packaging
About After Sales Service
All Parts Extended Quality Guarantee
Initiate the application within 90 days from the shipment date.
Confirm the return or exchange with our staff.
Maintain the goods in their original condition as received.
Lastly, please note that the eligibility for return or exchange of goods is subject to an assessment of the actual condition of the returned items. We will evaluate the received goods before finalizing the return or exchange process. If you have any inquiries or require further assistance regarding returns or exchanges, please don't hesitate to contact us at [email protected]
About packaging
Regarding packaging, our products are carefully packed in anti-static bags to provide ESD anti-static protection. The outer packaging is durable with secure closure. We support various packaging methods such as Tape and Reel, Cut Tape, Tube, or Tray.
Example
Tape and Reel
Cut Tape
Tube or Tray
LM2940S-12 DataSheet
Pricing (USD)
| Quantity | Unit Price | Ext. Price |
|---|---|---|
| 1 | $2.236 | $2.24 |
| 200 | $0.867 | $173.40 |
| 500 | $0.835 | $417.50 |
| 1000 | $0.820 | $820.00 |
These prices are subject to market fluctuations, and a quote submission is required to obtain the latest prices.
Details
LM2940S-12 is a high-performance positive voltage regulator that stands out for its ability to deliver 1 A of output current with minimal dropout voltage. Featuring a quiescent current reduction circuit, it effectively minimizes ground current and ensures efficient operation, particularly in scenarios where the input and output voltages have a significant differential. Furthermore, its design caters to vehicular applications, offering protection against reverse battery installations and line transients, thus safeguarding the regulator and the connected load. With additional safeguards such as short circuit and thermal overload protection, the LM2940S-12 is a dependable choice for voltage regulation in demanding environments
Key Features
- The LM29S-12 has a thermal shutdown protection circuit
- It features a low quiescent current consumption
- The device has a high ripple rejection ratio
Application
- Ensures voltage regulation
- Commonly found in industrial settings
- Powering microcontrollers
Specifications
The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.
| Pbfree Code | Yes | Rohs Code | No |
| Part Life Cycle Code | Not Recommended | Part Package Code | D2PAK |
| Pin Count ! | 4 | Reach Compliance Code | not_compliant |
| ECCN Code | EAR99 | HTS Code ! | 8542.39.00.01 |
| 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 | TUBE | 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 |
Datasheet PDF
Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.
FAQs
What is LM2940S-12?
The LM2940S-12 is a low dropout voltage regulator designed by Texas Instruments. It is a 12V fixed output voltage regulator that can deliver up to 1A of continuous output current. The regulator is ideal for providing a stable 12V power supply in various electronic applications, including automotive systems, industrial equipment, and portable devices.
How Does LM2940S-12 Work?
The LM2940S-12 functions as a low dropout voltage regulator, meaning it can maintain a stable output voltage even when the input voltage approaches the output voltage. It regulates the voltage by adjusting the internal pass transistor to ensure a consistent 12V output, while consuming low quiescent current for efficiency.
How Many Pins does LM2940S-12 have and What are the Functions of the Pinout Configuration?
The LM2940S-12 comes in a TO-263 package with 3 pins. The pinout configuration includes:
- Input (VIN): Input voltage pin.
- Ground (GND): Ground pin.
- Output (VOUT): Regulated 12V output pin.
What are the Pros and Cons of LM2940S-12?
Pros:
- Low Dropout Voltage: Can regulate voltage with a small dropout, ensuring efficient power conversion.
- High Output Current: Capable of delivering up to 1A of continuous current.
- Thermal Shutdown Protection: Includes thermal shutdown and current limit protection for reliability.
- Compact Package: TO-263 package offers a compact and easy-to-mount design.
- Fixed Output Voltage: Provides a stable 12V output without the need for external components.
Cons:
- Heat Dissipation: May require a heat sink for better heat dissipation in high current applications.
- Input Voltage Limitation: Input voltage should stay within specified limits for proper regulation.
Are There Any Equivalents/Alternatives to LM2940S-12 for Recommendation?
- The LM2937ET-12 from Texas Instruments is a similar 12V LDO regulator with slightly different features.
- Alternatives to the LM2940S-12 include the L78S12CV from STMicroelectronics and the NCP1117-12 from ON Semiconductor.
Recommend Parts
-
![LM629M-8]()
LM629M-8 Precision Motor Controller in 24-Pin SOIC Package
Brand: Texas Instruments Package/Case: SOIC-24
4,038 In Stock
Cargo cycle: 3~7 Days
The minimum order is 1
-
![LM1851N]()
The LM1851N is a reliable and user-friendly solution for monitoring and regulating current and power in a wide range of applications
Brand: Texas Instruments Package/Case: PDIP
4,006 In Stock
Cargo cycle: 3~7 Days
The minimum order is 1
-
![LM1117DT-ADJ]()
LM1117DT-ADJ
$0.211 Linear Voltage Regulators with 1.25V~13.8V adjustable positive electrode
Brand: Texas Instruments Package/Case: TO-252-3
4,471 In Stock
Cargo cycle: 3~7 Days
The minimum order is 1
-
![LMZ14203TZ-ADJ]()
Efficient 18W 7-pin configuration module suitable for PMOD integration
Brand: Texas Instruments Package/Case: TOPMOD-7
3,646 In Stock
Cargo cycle: 3~7 Days
The minimum order is 1
-
![LM3524DM]()
LM3524DM
$0.718 With its flexible design, LM3524DM offers customizable control over power delivery
Brand: Texas Instruments Package/Case: SOIC-Narrow-16
5,900 In Stock
Cargo cycle: 3~7 Days
The minimum order is 1
-
![LM2594HVM-12]()
LM2594HVM-12
$0.744 This voltage regulator is designed for step-down applications and comes in an 8-SOIC package
Brand: Texas Instruments Package/Case: SOIC-8
3,384 In Stock
Cargo cycle: 3~7 Days
The minimum order is 1
-
![LM20343MH]()
Efficient voltage regulation for various applications
Brand: Texas Instruments Package/Case: TSSOP EP
7,388 In Stock
Cargo cycle: 3~7 Days
The minimum order is 1
-
![LM5009AMM]()
LM5009AMM is a 0.36A switching regulator in a PDSON8 MSOP-8 package that offers efficient power conversion
Brand: Texas Instruments Package/Case: MSOP-8
6,684 In Stock
Cargo cycle: 3~7 Days
The minimum order is 1
-
![LM5008ASD/NOPB]()
Conv DC-DC regulator for step-up or step-down applications
Brand: Texas Instruments Package/Case: WSON-8
6,562 In Stock
Cargo cycle: 3~7 Days
The minimum order is 1
-
![LM5008AMM/NOPB]()
Switching Voltage Regulators 100V,350Ma Buck Reg
Brand: Texas Instruments Package/Case: VSSOP-8
7,016 In Stock
Cargo cycle: 3~7 Days
The minimum order is 1
-
![LM26420XSQ/NOPB]()
Dual 2 A, high-efficiency synchronous DC/DC converter 16-WQFN -40 to 125
Brand: Texas Instruments Package/Case: WQFN-16
6,040 In Stock
Cargo cycle: 3~7 Days
The minimum order is 1
-
![LMV431BIMF/NOPB]()
LMV431BIMF/NOPB
$0.457 Voltage References LOW-VLTG, 1.24V, ADJ PREC SHUNT REG
Brand: Texas Instruments Package/Case: SOT23-3
5,276 In Stock
Cargo cycle: 3~7 Days
The minimum order is 1
-
![LMR33630CDDA]()
SIMPLE SWITCHER® 3.8V to 36V, 3A Synchronous Buck Converter With Ultra-Low EMI 8-SO PowerPAD -40 to 125
Brand: Texas Instruments Package/Case: SO PowerPAD-8
4,333 In Stock
Cargo cycle: 3~7 Days
The minimum order is 1
-
![LMR33630ADDA]()
3,087 In Stock
Cargo cycle: 3~7 Days
The minimum order is 1
-
![LMR33620BDDAR]()
LMR33620BDDAR
$0.923 Switching Voltage Regulators SIMPLE SWITCHER® 3.8V to 36V, 2A Synchronous Buck Converter With Ultra-Low EMI 8-SO PowerPAD -40 to 125
Brand: Texas Instruments Package/Case: HSOIC-8
7,040 In Stock
Cargo cycle: 3~7 Days
The minimum order is 1
-
![LMR23615DRRT]()
SIMPLE SWITCHER®, 36-V, 1.5-A Synchronous Step-Down Converter 12-WSON -40 to 125
Brand: Texas Instruments Package/Case: WSON-12
3,948 In Stock
Cargo cycle: 3~7 Days
The minimum order is 1
