Texas Instruments

LM2940T-5.0/LF08  

Linear & Switching Voltage Regulators

The LM2940T-5.0/LF08 is a linear voltage regulator manufactured by Texas Instruments. It is designed to provide a stable and reliable output voltage of 5.0V with a maximum output current of 2A. Here is a description of the model, its features, and potential applications:

Description:

The LM2940T-5.0/LF08 is a member of the LM2940 series of adjustable linear regulators. It comes in a LF08 package, which is a small-outline, flat, leaded package suitable for surface-mount applications. The device is designed for low-dropout voltage operation, meaning it can operate efficiently even when the input voltage is close to the desired output voltage.

Features:

1. Output Voltage: The LM2940T-5.0/LF08 provides a fixed output voltage of 5.0V.
2. Output Current: It can deliver a continuous output current of up to 2A.
3. Low Dropout Voltage: The regulator has a low dropout voltage, which means it can operate with a small input-to-output voltage differential, making it suitable for battery-powered applications.
4. Adjustable Output: While the LM2940T-5.0/LF08 provides a fixed output, other variants in the LM2940 series offer adjustable output voltages.
5. Thermal Protection: The device includes internal thermal shutdown protection to prevent damage from overheating.
6. Transistor Count: It uses a single darlington transistor for the pass element, which simplifies the design and reduces component count.
7. Mounting Style: The LF08 package is suitable for surface-mount technology (SMT), which is a method for producing electronic devices by mounting components directly onto the surface of printed circuit boards (PCBs).

Applications:

1. Portable Electronics: Due to its low dropout voltage and ability to handle up to 2A of current, the LM2940T-5.0/LF08 is suitable for use in portable electronic devices that require a stable 5V power supply, such as smartphones, tablets, and wearable devices.
2. Power Supplies: It can be used in linear power supply designs where a regulated 5V output is needed.
3. Battery-Powered Devices: The low dropout feature makes it ideal for battery-powered applications where efficiency is crucial.
4. Industrial Equipment: In industrial settings, the LM2940T-5.0/LF08 can provide a stable voltage supply for microcontrollers, sensors, and other electronic components.
5. Medical Devices: For medical equipment that requires a stable and reliable power source, this regulator can be used to ensure consistent performance.

When using the LM2940T-5.0/LF08, it is important to consider the specific requirements of the application, including input voltage range, output current demand, and efficiency, to ensure the device operates within its specifications and provides the desired performance.

LM2940T-5.0/LF08 Documents

Download datasheets and manufacturer documentation for LM2940T-5.0/LF08

PCN Assembly/Origin :

Mult Devices 12/Apr/2018      

Datasheets :

TO-220 Leadbend Options       LM2940-N, 2940C Datasheet      

Design Resources :

Cooling Requirements for Linear Voltage Regulator      

Other Related Documents :

LDOs Quick Reference Guide      

HTML Datasheet :

LDOs Quick Reference Guide       LM2940-N, 2940C Datasheet