Texas Instruments

LM3940IS-3.3/NOPB  

Linear & Switching Voltage Regulators

LM3940IS-3.3/NOPB Description

The LM3940IS-3.3/NOPB is a high-performance linear voltage regulator designed by Texas Instruments, a leading manufacturer in the electronics industry. This regulator is part of the Power Management Integrated Circuits (PMIC) category and is known for its robust performance and reliability. The LM3940IS-3.3/NOPB features a fixed output voltage of 3.3V and can deliver a maximum output current of 1A. It is designed to operate with an input voltage range up to 7.5V, making it suitable for a wide range of applications where stable power supply is critical.

The regulator is housed in a surface-mount DDPAK/TO263-3 package, which is ideal for compact and high-density designs. With a dropout voltage of only 0.2V at 100mA, the LM3940IS-3.3/NOPB ensures efficient power conversion even under low input voltage conditions. This feature is particularly beneficial in battery-powered devices where the input voltage may drop as the battery discharges.

LM3940IS-3.3/NOPB Features

• Fixed Output Voltage: The LM3940IS-3.3/NOPB provides a stable 3.3V output voltage, which is essential for powering various electronic components and microcontrollers.
• High Output Current: Capable of delivering up to 1A of output current, this regulator can support multiple devices or high-current applications.
• Low Dropout Voltage: With a maximum dropout voltage of 0.2V at 100mA, the regulator maintains high efficiency even when the input voltage is close to the output voltage.
• Over-Temperature and Short-Circuit Protection: These protection features enhance the reliability and durability of the regulator, safeguarding it against thermal overload and short-circuit conditions.
• Surface-Mount Package: The DDPAK/TO263-3 package is suitable for surface-mount technology (SMT), enabling compact and space-efficient designs.
• Compliance and Safety: The LM3940IS-3.3/NOPB is REACH unaffected and RoHS3 compliant, ensuring it meets environmental and safety standards. It also has a Moisture Sensitivity Level (MSL) of 3, allowing for a 168-hour exposure to ambient conditions before reflow soldering.

LM3940IS-3.3/NOPB Applications

The LM3940IS-3.3/NOPB is ideal for a variety of applications where a stable and efficient power supply is required. Some specific use cases include:

• Consumer Electronics: Ideal for powering smartphones, tablets, and other portable devices that require a stable 3.3V supply.
• Industrial Equipment: Suitable for industrial control systems, sensors, and actuators that need reliable power sources.
• Automotive Systems: Can be used in automotive electronics where a fixed 3.3V supply is necessary for various modules and controllers.
• Medical Devices: Applicable in medical equipment that requires precise and stable power supply for accurate operation.
• Telecommunications: Useful in base stations, routers, and other telecom equipment where a reliable power source is crucial.

Conclusion of LM3940IS-3.3/NOPB

The LM3940IS-3.3/NOPB from Texas Instruments stands out as a reliable and efficient linear voltage regulator, offering a fixed 3.3V output with a maximum current of 1A. Its low dropout voltage and surface-mount package make it an excellent choice for compact and high-efficiency designs. The over-temperature and short-circuit protection features enhance its robustness, making it suitable for a wide range of applications. This regulator is an ideal solution for consumer electronics, industrial equipment, automotive systems, medical devices, and telecommunications, ensuring stable power supply and reliable performance.

LM3940IS-3.3/NOPB Documents

Download datasheets and manufacturer documentation for LM3940IS-3.3/NOPB

PCN Assembly/Origin :

Mult Devices 12/Apr/2018      

Datasheets :

LM3940