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L4940V12
2V fixed positive LDO regulator, 0.9V dropout, PSFM3, lead free, TO-220, 3 pin
L4940V12
2V fixed positive LDO regulator, 0.9V dropout, PSFM3, lead free, TO-220, 3 pin
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Manufacturer Part # : L4940V12
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Package/Case: TO-220-3
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Brand: Stmicroelectronics
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Product Categories : Voltage Regulators - Linear, Low Drop Out (LDO) Regulators
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Shipping & Payment
Shipping & Payment
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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.
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L4940V12 DataSheet
Current price plan is under preparation. Please contact our customer service team for the latest pricing information. Thank you for your understanding and support!
Details
STMicroelectronics' L4940V12 fixed voltage regulator is a reliable choice for projects that demand a consistent 12V output. With internal current limiting and thermal shutdown protection, this regulator offers peace of mind when it comes to circuit safety and reliability. Its wide input voltage range of 14V to 35V and high ripple rejection ratio of 80dB at 1kHz make it a versatile option for various power supply applications, ensuring a stable output voltage even in challenging environments. Trust the L4940V12 to deliver consistent performance for your electronic projects
Key Features
- Dual output voltage option
- High efficiency and reliability
- Synchronous rectification for low noise
Application
- Regulator for audio
- Power management
- Voltage regulator
Specifications
The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.
| Product Category ! | LDO Voltage Regulators | RoHS | Details |
| Mounting Style | Through Hole | Package / Case | TO-220-3 |
| Output Voltage | 12 V | Output Current ! | 1.5 A |
| Number of Outputs | 1 Output | Polarity | Positive |
| Quiescent Current ! | 8 mA | Input Voltage, Max | 17 V |
| Output Type | Fixed | Minimum Operating Temperature | - 40 C |
| Maximum Operating Temperature ! | + 150 C | Dropout Voltage ! | 200 mV |
| Series | L4940 | Brand | STMicroelectronics |
| Dropout Voltage - Max | 900 mV | Height | 9.15 mm |
| Ib - Input Bias Current | 4 mA | Length | 10.4 mm |
| Line Regulation ! | 7 mV | Load Regulation ! | 35 mV |
| Product Type ! | LDO Voltage Regulators | Factory Pack Quantity | 50 |
| Subcategory | PMIC - Power Management ICs | Width | 4.6 mm |
| Unit Weight | 0.211644 oz |
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 L4940V12?
The L4940V12 is a low-dropout voltage regulator (LDO) designed by STMicroelectronics. It is ideal for applications requiring a stable and regulated output voltage with low dropout voltage, such as battery-powered devices, automotive electronics, and industrial control systems.
How Does L4940V12 Work?
The L4940V12 works by regulating the input voltage to provide a stable and consistent output voltage, even when the input voltage is slightly lower than the desired output voltage. Its low dropout voltage allows it to operate effectively with small voltage differentials between the input and output, ensuring efficient power conversion.
How Many Pins does L4940V12 have and What are the Functions of the Pinout Configuration?
The L4940V12 is housed in a 3-lead TO-220 package. The pinout configuration includes:
- INPUT: Input voltage pin.
- GND: Ground pin.
- OUTPUT: Regulated output voltage pin.
What are the Pros and Cons of L4940V12?
Pros:
- Low Dropout Voltage: Allows operation with very small voltage differentials, maximizing efficiency.
- Stable Output: Provides a stable and regulated output voltage, suitable for sensitive electronic components.
- Overcurrent and Thermal Protection: Includes built-in protection features for enhanced reliability and safety.
- Wide Operating Temperature Range: Suitable for use in a variety of environmental conditions.
- Simple Integration: The 3-lead TO-220 package allows for easy integration into different circuit designs.
Cons:
- Heat Dissipation: May require additional heat sinking or thermal management in high-power applications.
- Limited Features: Does not offer adjustable output voltage or remote voltage sensing.
Are There Any Equivalents/Alternatives to L4940V12 for Recommendation?
Some equivalents to the L4940V12 include the LM2940 from Texas Instruments and the ADP3336 from Analog Devices as alternative low-dropout voltage regulators.
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