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LM2940T-5.0
+Lista de MateriaisIC REG LINEAR 5V 1A TO220-3
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FabricanteTexas Instruments
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Peça do Fabricante #LM2940T-5.0
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Pacote TO-220-3
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Especificações
| Atributo | Valor |
| Package | Tube |
| ProductStatus | Not For New Designs |
| OutputConfiguration | Positive |
| OutputType | Fixed |
| NumberofRegulators | 1 |
| Voltage-Input(Max) | 26V |
| Voltage-Output(Min/Fixed) | 5V |
| VoltageDropout(Max) | 1V @ 1A |
| Current-Output | 1A |
| Current-Quiescent(Iq) | 10 mA |
| Current-Supply(Max) | 15 mA |
| PSRR | 64dB (120Hz) |
| ProtectionFeatures | Over Current, Over Temperature, Reverse Polarity, Short Circuit |
| OperatingTemperature | -40°C ~ 125°C |
| MountingType | Through Hole |
| Package/Case | TO-220-3 |
Visão Geral
Description
The LM2940T-5.0 is a fixed-output, low-dropout (LDO) voltage regulator specifically designed to provide a stable 5.0 volts output from a higher input voltage. Notable for its low dropout voltage of about 0.5 volts at full load, it allows efficient operation even when the input voltage is only slightly higher than the desired output. This device is packaged in a TO-220 configuration, accommodating easy heat dissipation via an integrated heat sink tab.
Key features of the LM2940T-5.0 include:
1. Output Current: Capable of delivering up to 1A of output current, making it suitable for moderate power applications.
2. Transient Response: Offers excellent load transient response, maintaining stability and voltage accuracy during changes in load conditions.
3. Protection: Equipped with internal protection features like current limiting and thermal shutdown, enhancing its reliability under adverse conditions.
4. Application: Ideal for post-regulation of switching power supplies, automotive applications, and powering microcontrollers or other digital logic circuits where a stable 5V is required.
The LM2940T-5.0 is popular for its balance of performance, simplicity, and reliability in linear voltage regulation tasks.
Key features of the LM2940T-5.0 include:
1. Output Current: Capable of delivering up to 1A of output current, making it suitable for moderate power applications.
2. Transient Response: Offers excellent load transient response, maintaining stability and voltage accuracy during changes in load conditions.
3. Protection: Equipped with internal protection features like current limiting and thermal shutdown, enhancing its reliability under adverse conditions.
4. Application: Ideal for post-regulation of switching power supplies, automotive applications, and powering microcontrollers or other digital logic circuits where a stable 5V is required.
The LM2940T-5.0 is popular for its balance of performance, simplicity, and reliability in linear voltage regulation tasks.
Equivalent
Equivalent products to the LM2940T-5.0, which is a 5V low-dropout voltage regulator, include the MIC29300-5.0WT, LT1086CT-5, and KA7805ETU. These alternatives offer similar features such as low dropout voltage and are suitable for applications requiring a stable 5V output. Always check the datasheets to ensure compatibility in terms of pin configuration, output current, and thermal characteristics before substitution.
Features
The LM2940T-5.0 is a 5V voltage regulator known for its low dropout voltage and reliable performance. Key features include:
1. Low Dropout Voltage: It typically requires only about 0.5V more than the output voltage to maintain regulation, making it suitable for low input voltages.
2. Output Current: It supports an output current up to 1A, which is suitable for various moderate power applications.
3. Output Accuracy: The device provides a fixed 5V output with high precision.
4. Protection Features: It includes built-in thermal shutdown and current limiting to prevent damage from overheating and overcurrent conditions.
5. Reverse Polarity Protection: This feature safeguards the regulator against accidental reversal of the supply voltage.
6. Wide Operating Temperature Range: Designed to operate over a range from -40°C to +125°C, making it suitable for both industrial and automotive applications.
7. Low Quiescent Current: It has a low quiescent current draw, which is beneficial for battery-operated devices.
These features make the LM2940T-5.0 an efficient and robust choice for voltage regulation in various electronic applications.
1. Low Dropout Voltage: It typically requires only about 0.5V more than the output voltage to maintain regulation, making it suitable for low input voltages.
2. Output Current: It supports an output current up to 1A, which is suitable for various moderate power applications.
3. Output Accuracy: The device provides a fixed 5V output with high precision.
4. Protection Features: It includes built-in thermal shutdown and current limiting to prevent damage from overheating and overcurrent conditions.
5. Reverse Polarity Protection: This feature safeguards the regulator against accidental reversal of the supply voltage.
6. Wide Operating Temperature Range: Designed to operate over a range from -40°C to +125°C, making it suitable for both industrial and automotive applications.
7. Low Quiescent Current: It has a low quiescent current draw, which is beneficial for battery-operated devices.
These features make the LM2940T-5.0 an efficient and robust choice for voltage regulation in various electronic applications.
Pinout
The LM2940T-5.0 is a low-dropout voltage regulator with a fixed output voltage of 5.0V. It typically comes in a TO-220 package with three pins. Here are the pin functions:
1. Input (Pin 1): This is where the unregulated input voltage is supplied. It should be higher than the output voltage to ensure proper regulation.
2. Ground (Pin 2): This pin is connected to the ground reference for both input and output.
3. Output (Pin 3): This pin provides the regulated 5.0V output voltage. It powers the load connected to the regulator.
The LM2940T-5.0 is designed for applications requiring a low dropout voltage (typically around 0.5V at 1A load current) and stable output. It's ideal for powering microcontrollers and other digital circuits that require a stable 5V supply.
1. Input (Pin 1): This is where the unregulated input voltage is supplied. It should be higher than the output voltage to ensure proper regulation.
2. Ground (Pin 2): This pin is connected to the ground reference for both input and output.
3. Output (Pin 3): This pin provides the regulated 5.0V output voltage. It powers the load connected to the regulator.
The LM2940T-5.0 is designed for applications requiring a low dropout voltage (typically around 0.5V at 1A load current) and stable output. It's ideal for powering microcontrollers and other digital circuits that require a stable 5V supply.
Manufacturer
The LM2940T-5.0 is a voltage regulator manufactured by Texas Instruments. Texas Instruments (TI) is a global technology company that designs and manufactures semiconductors and integrated circuits. They are a leading manufacturer in the electronics industry, providing components that are used in a wide range of applications across several sectors including automotive, industrial, personal electronics, communications equipment, and enterprise systems. TI is known for its innovation in analog and embedded processing technologies, and it supports engineers and developers with a broad portfolio of products and comprehensive design resources.
Application
The LM2940T-5.0 is a low-dropout (LDO) voltage regulator that provides a stable 5V output, making it suitable for various applications. Common application areas include:
1. Embedded Systems: Powers microcontrollers and digital circuits.
2. Automotive Electronics: Ensures stable voltage for automotive sensors and control units.
3. Consumer Electronics: Supports devices like portable gadgets and home appliances.
4. Industrial Automation: Provides reliable power for industrial sensors and control equipment.
5. Communication Systems: Stabilizes power for radios and networking devices.
6. Battery-Powered Devices: Efficient for prolonging battery life in portable electronics.
Its low dropout voltage and robust performance make it ideal for systems requiring a stable 5V power supply under varying input conditions.
1. Embedded Systems: Powers microcontrollers and digital circuits.
2. Automotive Electronics: Ensures stable voltage for automotive sensors and control units.
3. Consumer Electronics: Supports devices like portable gadgets and home appliances.
4. Industrial Automation: Provides reliable power for industrial sensors and control equipment.
5. Communication Systems: Stabilizes power for radios and networking devices.
6. Battery-Powered Devices: Efficient for prolonging battery life in portable electronics.
Its low dropout voltage and robust performance make it ideal for systems requiring a stable 5V power supply under varying input conditions.
Package
The LM2940T-5.0 is a fixed 5V voltage regulator from the LM2940 series. It comes in a TO-220 package, which is a commonly used three-pin package for power transistors and voltage regulators, designed to handle higher power dissipation.
