仕様
| 属性 | 値 |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| 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 ~ 85°C |
| MountingType | Surface Mount |
| Package/Case | TO-261-4, TO-261AA |
概要
Description
The LM2940IMP-5.0 is a low dropout (LDO) linear voltage regulator designed to provide a stable 5.0V output from a higher input voltage. It is commonly used in applications where a stable and reliable power supply is necessary, even when the input voltage is close to the desired output voltage. The "IMP" in its name indicates it's in a specific surface-mount package, which is the SOT-223.
Key features of the LM2940IMP-5.0 include:
1. Low Dropout Voltage: It has a dropout voltage of typically 0.5V at full current, which allows it to maintain regulation with minimal input to output differential.
2. Output Current: It can supply up to 1A of output current.
3. Protection Features: It includes thermal shutdown and current limiting to protect against overheating and overload conditions.
4. Applications: Ideal for use in battery-powered devices, microcontroller systems, and other electronic circuits requiring a stable 5V supply.
Overall, the LM2940IMP-5.0 is valued for its efficiency, reliability, and robust performance in low-voltage supply systems.
Key features of the LM2940IMP-5.0 include:
1. Low Dropout Voltage: It has a dropout voltage of typically 0.5V at full current, which allows it to maintain regulation with minimal input to output differential.
2. Output Current: It can supply up to 1A of output current.
3. Protection Features: It includes thermal shutdown and current limiting to protect against overheating and overload conditions.
4. Applications: Ideal for use in battery-powered devices, microcontroller systems, and other electronic circuits requiring a stable 5V supply.
Overall, the LM2940IMP-5.0 is valued for its efficiency, reliability, and robust performance in low-voltage supply systems.
Equivalent
The LM2940IMP-5.0 is a low dropout voltage regulator. Equivalent products include:
1. MIC29302 - A low dropout regulator with similar voltage and current ratings.
2. LT1129 - Offers low dropout voltage and similar functionality.
3. NCP1117 - Another low dropout option with comparable specs.
4. LP2950 - Features low dropout performance, useful for similar applications.
These alternatives are generally used in similar applications where efficient voltage regulation is required. Always check for pin compatibility and specific electrical characteristics before substituting.
1. MIC29302 - A low dropout regulator with similar voltage and current ratings.
2. LT1129 - Offers low dropout voltage and similar functionality.
3. NCP1117 - Another low dropout option with comparable specs.
4. LP2950 - Features low dropout performance, useful for similar applications.
These alternatives are generally used in similar applications where efficient voltage regulation is required. Always check for pin compatibility and specific electrical characteristics before substituting.
Features
The LM2940IMP-5.0 is a low-dropout voltage regulator designed to provide a steady 5.0V output. Key features include:
1. Low Dropout Voltage: It has a dropout voltage of approximately 0.5V at a full load of 1A, making it efficient even at lower input-output voltage differentials.
2. Output Current: Capable of delivering up to 1A of output current, suitable for a variety of applications.
3. Quiescent Current: It has a low quiescent current, typically around 10mA, which helps in conserving power.
4. Stability: The regulator is stable with a wide range of capacitive loads, requiring only a 22μF output capacitor for stability.
5. Protection Features: The LM2940IMP-5.0 includes overcurrent and thermal shutdown protection to safeguard against potential damage from overloading or excessive heat.
6. Temperature Range: It operates over a wide temperature range of -40°C to 125°C, suitable for industrial and automotive environments.
7. Package: Available in a TO-220, TO-263, or SOT-223 package for compatibility with various designs.
These features make the LM2940IMP-5.0 an excellent choice for applications requiring a reliable and efficient voltage regulation.
1. Low Dropout Voltage: It has a dropout voltage of approximately 0.5V at a full load of 1A, making it efficient even at lower input-output voltage differentials.
2. Output Current: Capable of delivering up to 1A of output current, suitable for a variety of applications.
3. Quiescent Current: It has a low quiescent current, typically around 10mA, which helps in conserving power.
4. Stability: The regulator is stable with a wide range of capacitive loads, requiring only a 22μF output capacitor for stability.
5. Protection Features: The LM2940IMP-5.0 includes overcurrent and thermal shutdown protection to safeguard against potential damage from overloading or excessive heat.
6. Temperature Range: It operates over a wide temperature range of -40°C to 125°C, suitable for industrial and automotive environments.
7. Package: Available in a TO-220, TO-263, or SOT-223 package for compatibility with various designs.
These features make the LM2940IMP-5.0 an excellent choice for applications requiring a reliable and efficient voltage regulation.
Pinout
The LM2940IMP-5.0 is a low-dropout voltage regulator with a fixed output voltage of 5.0 volts. It is available in a TO-252 (D-Pak) package and typically features 3 pins. The pin functions are as follows:
1. Input (Pin 1): This pin is connected to the unregulated input voltage. It supplies the necessary power for the regulator to output a stable 5.0V.
2. Ground (Pin 2): This is the reference pin for the device and should be connected to the system ground. It serves as the return path for the input and output.
3. Output (Pin 3): This pin provides the regulated 5.0V output. It is connected to the load requiring regulation.
The LM2940IMP-5.0 is known for its low dropout voltage, making it suitable for battery-powered applications where efficiency is critical. It also features protection mechanisms like current limiting and thermal shutdown to enhance reliability and performance in various applications.
1. Input (Pin 1): This pin is connected to the unregulated input voltage. It supplies the necessary power for the regulator to output a stable 5.0V.
2. Ground (Pin 2): This is the reference pin for the device and should be connected to the system ground. It serves as the return path for the input and output.
3. Output (Pin 3): This pin provides the regulated 5.0V output. It is connected to the load requiring regulation.
The LM2940IMP-5.0 is known for its low dropout voltage, making it suitable for battery-powered applications where efficiency is critical. It also features protection mechanisms like current limiting and thermal shutdown to enhance reliability and performance in various applications.
Manufacturer
The LM2940IMP-5.0 is manufactured by Texas Instruments (TI). Texas Instruments is a global semiconductor company that designs and manufactures a wide range of electronic components, including integrated circuits, processors, and sensors. TI is renowned for its innovations in the semiconductor industry and supplies products that are essential for various applications such as industrial, automotive, personal electronics, and communications. The company is headquartered in Dallas, Texas, and has a significant presence worldwide, serving numerous sectors with its cutting-edge technologies.
Application
The LM2940IMP-5.0 is a low-dropout voltage regulator commonly used in applications requiring a stable output of 5.0V. It is ideal for use in battery-operated devices, automotive electronics, and portable instruments due to its low dropout voltage and low quiescent current. Additionally, it is suitable for powering microcontrollers, sensors, and communication equipment where space and efficiency are critical. Its protection features make it reliable in harsh environments, making it a fit for industrial control systems and embedded applications.
Package
The LM2940IMP-5.0 is a voltage regulator in a surface-mount package, specifically the SOT-223 package.
