Product Overview: LM3940ISX-3.3

The LM3940ISX-3.3 is a highly reliable, efficient, and versatile low-dropout regulator (LDO) designed and manufactured by Texas Instruments. This LDO is specifically engineered to convert higher DC voltage to a lower regulated voltage with a minimal difference between the input and output voltages, making it an ideal choice for a variety of electronic applications.

Key Features

• Output Voltage: The LM3940ISX-3.3 provides a fixed output voltage of 3.3V, which is commonly used in digital circuits and microcontroller-based systems.
• Dropout Voltage: With a low dropout voltage of typically 1V at a full load of 1A, it ensures efficient operation even when the supply voltage is very close to the output voltage.
• Output Current: It can deliver an output current of up to 1A, making it suitable for powering a wide range of devices.
• Thermal Protection: The built-in thermal shutdown feature protects the device from damage due to overheating.
• Short Circuit Protection: It also includes short circuit protection to safeguard the regulator and the connected load in the event of a fault condition.
• Packaging: The LM3940ISX-3.3 comes in an easy-to-solder TO-263 package, which is compatible with standard surface-mount technology (SMT).
• Input Voltage Range: Designed to handle an input voltage range from 4.5V to 7V, it provides flexibility in various power supply configurations.

Applications

The LM3940ISX-3.3 is suitable for a broad array of applications that require a stable and regulated 3.3V supply. These include:

• Portable Devices
• Embedded Systems
• Microcontroller Power Supplies
• Peripheral Power Supplies
• Logic and Digital Circuitry

Quality and Reliability

Texas Instruments is known for its commitment to quality, and the LM3940ISX-3.3 is no exception. It is designed to meet the rigorous demands of both commercial and industrial applications. With its robust feature set and proven performance, the LM3940ISX-3.3 is a preferred choice for designers looking for a reliable power management solution.