Texas Instruments

LM2940SX-12/NOPB  

Linear & Switching Voltage Regulators

The LM2940SX-12/NOPB is a linear voltage regulator manufactured by Texas Instruments. It is designed to provide a stable and reliable voltage output for various applications. Here is a brief description of the model, its features, and potential applications:

Description:

The LM2940SX-12/NOPB is a member of the LM2940 series, which are adjustable linear voltage regulators. This particular model is designed to provide an output voltage of 12V. The "SX" in the model number indicates that it is a low dropout (LDO) regulator, which means it can maintain a stable output voltage even when the input voltage is close to the output voltage.

Features:

1. Output Voltage: The LM2940SX-12/NOPB is designed to provide a stable 12V output.
2. Low Dropout Voltage: It can operate with a low input-to-output voltage differential, making it suitable for applications where the input voltage is close to the desired output voltage.
3. Adjustable Output Voltage: The output voltage can be adjusted using external resistors, allowing for customization to specific application requirements.
4. Thermal Protection: The regulator includes thermal shutdown protection to prevent damage in case of overheating.
5. Transistor Count: The LM2940 series typically uses a single-ended primary feedback topology, which can result in a lower component count and simpler design compared to some other voltage regulators.
6. Package Type: The "/NOPB" at the end of the model number typically indicates the package type. In this case, it likely refers to a "No Lead" package, which is environmentally friendly and designed to prevent lead exposure during disposal.

Applications:

1. Portable Electronics: The LM2940SX-12/NOPB can be used in portable devices like smartphones, tablets, and laptops to provide a stable voltage supply for the microprocessor or other components.
2. Power Supplies: It can be used in battery-powered devices to regulate the voltage from batteries to ensure consistent performance.
3. Industrial Equipment: The regulator can be used in industrial applications where a stable and reliable voltage supply is required for sensitive components.
4. Medical Devices: Due to its reliability and thermal protection features, the LM2940SX-12/NOPB can be used in medical devices where a stable power supply is critical.
5. Automotive Electronics: It can be used in automotive applications to provide a regulated voltage supply for various electronic systems.

When using the LM2940SX-12/NOPB or any other voltage regulator, it is essential to consult the datasheet for detailed information on specifications, operating conditions, and design guidelines to ensure proper operation and longevity of the device.

LM2940SX-12/NOPB Documents

Download datasheets and manufacturer documentation for LM2940SX-12/NOPB

PCN Assembly/Origin :

Mult Devices 12/Apr/2018      

Datasheets :

LM2940-N, 2940C Datasheet      

HTML Datasheet :

LM2940-N, 2940C Datasheet