Texas Instruments

REG1117-3.3/2K5G4

REG1117-3.3/2K5G4 Description

The REG1117-3.3/2K5G4 is a fixed output linear voltage regulator from Texas Instruments, designed to deliver a stable 3.3V output voltage with a maximum output current of 800mA. This regulator is housed in a SOT223-4 package, making it suitable for surface mount applications. It features a maximum input voltage of 15V and a dropout voltage of 1.2V at 800mA, ensuring efficient operation even at lower input-to-output voltage differentials. The regulator includes over current and over temperature protection features, enhancing its reliability and safety in various electronic systems. With a quiescent current of 10mA and a power supply rejection ratio (PSRR) of 62dB at 120Hz, the REG1117-3.3/2K5G4 offers excellent performance in noise-sensitive applications. It is REACH unaffected, ROHS3 compliant, and has a moisture sensitivity level (MSL) of 1, making it suitable for a wide range of industrial and consumer electronics.

REG1117-3.3/2K5G4 Features

• Fixed Output Voltage: Provides a stable 3.3V output, ideal for powering digital circuits and microcontrollers.
• High Output Current: Capable of delivering up to 800mA, making it suitable for applications requiring moderate to high current loads.
• Low Dropout Voltage: A maximum dropout voltage of 1.2V at 800mA ensures efficient operation and minimal power loss.
• Protection Features: Over current and over temperature protection enhance the regulator's reliability and safety.
• Low Quiescent Current: Only 10mA of quiescent current minimizes power consumption in standby modes.
• High PSRR: A power supply rejection ratio of 62dB at 120Hz ensures minimal noise interference, making it suitable for sensitive applications.
• Compliance and Reliability: REACH unaffected and ROHS3 compliant, with a moisture sensitivity level (MSL) of 1, ensuring environmental and operational reliability.
• Packaging: Available in a surface mount SOT223-4 package, suitable for compact and high-density PCB designs.

REG1117-3.3/2K5G4 Applications

The REG1117-3.3/2K5G4 is ideal for a variety of applications where a stable and efficient 3.3V power supply is required. Some specific use cases include:

• Microcontroller Power Supplies: Provides a reliable and stable power source for microcontrollers and other digital circuits.
• Embedded Systems: Suitable for embedded systems that require low noise and high efficiency in their power supply.
• Consumer Electronics: Ideal for powering various consumer electronic devices that operate at 3.3V and require up to 800mA of current.
• Industrial Control Systems: Can be used in industrial control systems where compact size and high reliability are crucial.
• Telecommunications: Suitable for powering various components in telecommunication equipment that require a stable 3.3V supply.

Conclusion of REG1117-3.3/2K5G4

The REG1117-3.3/2K5G4 from Texas Instruments is a robust and efficient linear voltage regulator designed to meet the demands of modern electronic systems. Its fixed 3.3V output, high output current capability, and low dropout voltage make it an excellent choice for a wide range of applications. The inclusion of over current and over temperature protection features ensures reliability and safety, while its low quiescent current and high PSRR make it suitable for noise-sensitive environments. With its compact SOT223-4 package and surface mount compatibility, the REG1117-3.3/2K5G4 is an ideal solution for designers looking to integrate a reliable and efficient power supply into their projects.