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LM2940IMPX-5.0
IC REG LINEAR 5V 1A SOT-223-4
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規格
| Part Status | Obsolete |
| Base Product Number | LM2940 |
| Output Configuration | Positive |
| Output Type | Fixed |
| Number of Regulators | 1 |
| Voltage - Input (Max) | 26V |
| Voltage - Output (Min/Fixed) | 5V |
| Voltage Dropout (Max) | 1V @ 1A |
| Current - Output | 1A |
| Current - Quiescent (Iq) | 10 mA |
| Current - Supply (Max) | 15 mA |
| PSRR | 64dB (120Hz) |
| Protection Features | Over Current, Over Temperature, Reverse Polarity, Short Circuit |
| Operating Temperature | -40°C ~ 85°C |
| Mounting Type | Surface Mount |
| Package | TO-261-4, TO-261AA |
| Supplier Device Package | SOT-223-4 |
| Packaging | Tape & Reel (TR) |
概述
Description
The LM2940IMPX-5.0 is a voltage regulator from Texas Instruments, designed to provide a stable 5.0V output. It is part of the LM2940 series, renowned for its low dropout voltage capabilities, making it suitable for applications where efficiency and reliability are critical. The component can deliver up to 1A of output current, maintaining a low dropout of about 0.5V, allowing it to efficiently regulate voltage even with minimal differences between input and output voltages.
Key features include a low quiescent current, which is beneficial for battery-operated devices, and robust protection mechanisms such as current limiting and thermal shutdown to prevent damage from overloads or overheating. The "IMPX" designation refers to its packaging and tolerance specifications, with IMPX indicating a surface-mount package that is compact and suitable for high-density circuit boards.
Typical applications for the LM2940IMPX-5.0 include automotive electronics, industrial equipment, and other consumer electronics requiring a reliable 5V power supply. It's known for its high precision, reliability, and ease of use, making it a preferred choice for engineers and designers working on power regulation tasks.
Key features include a low quiescent current, which is beneficial for battery-operated devices, and robust protection mechanisms such as current limiting and thermal shutdown to prevent damage from overloads or overheating. The "IMPX" designation refers to its packaging and tolerance specifications, with IMPX indicating a surface-mount package that is compact and suitable for high-density circuit boards.
Typical applications for the LM2940IMPX-5.0 include automotive electronics, industrial equipment, and other consumer electronics requiring a reliable 5V power supply. It's known for its high precision, reliability, and ease of use, making it a preferred choice for engineers and designers working on power regulation tasks.
Features
The LM2940IMPX-5.0 is a low dropout (LDO) voltage regulator specifically designed for applications requiring a stable 5.0V output. Key features include:
1. Low Dropout Voltage: It offers a dropout voltage of typically around 0.5V at a full load of 1A, making it suitable for applications with low headroom between input and output voltages.
2. Output Current: It can deliver up to 1A of output current, making it versatile for powering a variety of devices.
3. High Stability: The LM2940IMPX-5.0 is designed for high stability with low output noise, ideal for sensitive electronic applications.
4. Reverse Polarity Protection: It includes reverse polarity protection to safeguard the device from incorrect supply connections.
5. Thermal Protection: Built-in thermal shutdown protection helps prevent damage due to overheating.
6. Short-Circuit Protection: This feature helps in preventing possible damage from short-circuit conditions.
7. Wide Input Voltage Range: The device can operate over a wide input voltage range, typically from 6V to 26V.
Overall, the LM2940IMPX-5.0 is a reliable choice for applications requiring efficient and stable power regulation with protection features.
1. Low Dropout Voltage: It offers a dropout voltage of typically around 0.5V at a full load of 1A, making it suitable for applications with low headroom between input and output voltages.
2. Output Current: It can deliver up to 1A of output current, making it versatile for powering a variety of devices.
3. High Stability: The LM2940IMPX-5.0 is designed for high stability with low output noise, ideal for sensitive electronic applications.
4. Reverse Polarity Protection: It includes reverse polarity protection to safeguard the device from incorrect supply connections.
5. Thermal Protection: Built-in thermal shutdown protection helps prevent damage due to overheating.
6. Short-Circuit Protection: This feature helps in preventing possible damage from short-circuit conditions.
7. Wide Input Voltage Range: The device can operate over a wide input voltage range, typically from 6V to 26V.
Overall, the LM2940IMPX-5.0 is a reliable choice for applications requiring efficient and stable power regulation with protection features.
Package
The LM2940IMPX-5.0 is a low-dropout (LDO) voltage regulator from Texas Instruments. It comes in an SOT-223 package type, which is a small, surface-mount package ideal for compact electronic designs.
Pinout
The LM2940IMPX-5.0 is a low dropout voltage regulator designed to provide a stable 5.0V output. It comes in an 8-pin package, commonly the SOIC-8 (Small Outline Integrated Circuit) package. Here's a concise breakdown of its pin functions:
1. Input (Pin 1): Connect this pin to the input voltage source. It requires a higher voltage than the output to function correctly, typically above 6V for a 5V output.
2. Ground (Pins 2-4): These pins are connected to the ground.
3. Output (Pin 5): This pin provides a regulated 5.0V output with a maximum output current capability, generally around 1A, depending on the package's thermal characteristics.
4. Ground (Pins 6-8): These pins are again connected to the ground.
The LM2940IMPX-5.0 features a low dropout voltage, meaning it can maintain regulation with a small difference between input and output voltage. This makes it suitable for battery-powered and low voltage applications. Additionally, it includes features like overcurrent protection and thermal shutdown to ensure reliability and safety.
1. Input (Pin 1): Connect this pin to the input voltage source. It requires a higher voltage than the output to function correctly, typically above 6V for a 5V output.
2. Ground (Pins 2-4): These pins are connected to the ground.
3. Output (Pin 5): This pin provides a regulated 5.0V output with a maximum output current capability, generally around 1A, depending on the package's thermal characteristics.
4. Ground (Pins 6-8): These pins are again connected to the ground.
The LM2940IMPX-5.0 features a low dropout voltage, meaning it can maintain regulation with a small difference between input and output voltage. This makes it suitable for battery-powered and low voltage applications. Additionally, it includes features like overcurrent protection and thermal shutdown to ensure reliability and safety.
Manufacturer
The LM2940IMPX-5.0 is manufactured by Texas Instruments. Texas Instruments is a global semiconductor company that designs and manufactures a wide range of integrated circuits and other electronic components. They are known for their innovations in analog and embedded processing technologies. The company serves a diverse range of markets including industrial, automotive, personal electronics, communications equipment, and enterprise systems.
Application
The LM2940IMPX-5.0 is a low dropout (LDO) voltage regulator designed for various applications, including automotive electronics, portable devices, and industrial equipment. It is ideal for powering microcontrollers, sensors, and communication modules in situations where stable 5V output is required from a higher voltage input. Its low dropout voltage makes it suitable for battery-powered systems, ensuring efficient power conversion while extending battery life.
Equivalent
The LM2940IMPX-5.0 is a low-dropout (LDO) linear voltage regulator. Equivalent products include the MIC29300-5.0 from Microchip, the LT1086-5 from Analog Devices, and the NCP1117ST50T3G from ON Semiconductor. These alternatives offer similar output voltage, current ratings, and dropout characteristics. Always check the datasheet for compatibility with your specific application.
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