Texas Instruments

REG1117A-1.8G4

REG1117A-1.8G4 Description

The REG1117A-1.8G4 is a fixed-output linear voltage regulator designed by Texas Instruments. This device offers a regulated output voltage of 1.8V and can support a maximum output current of 1A. It is designed to operate with an input voltage range up to 15V, making it suitable for a variety of applications that require stable power supply solutions. The regulator is housed in a SOT223-4 package, which is ideal for surface-mount applications, ensuring compact and efficient integration into electronic circuits.

REG1117A-1.8G4 Features

• Fixed Output Voltage: The REG1117A-1.8G4 provides a stable output voltage of 1.8V, ensuring consistent power delivery to connected devices.
• High Input Voltage Range: With a maximum input voltage of 15V, this regulator can handle a wide range of input voltages, making it versatile for various power supply scenarios.
• High Output Current: Capable of delivering up to 1A of output current, this regulator is suitable for applications requiring moderate to high current loads.
• Low Dropout Voltage: The maximum dropout voltage is 1.55V at 1A, allowing the regulator to maintain efficiency even under high load conditions.
• Low Quiescent Current: A quiescent current of only 10 mA ensures minimal power consumption during operation, enhancing overall system efficiency.
• High PSRR: The Power Supply Rejection Ratio (PSRR) of 62dB at 120Hz helps in filtering out noise from the input power supply, resulting in cleaner output voltage.
• Protection Features: Integrated over-current and over-temperature protection features safeguard the regulator and connected components from potential damage.
• Compliance and Packaging: The REG1117A-1.8G4 is REACH unaffected and RoHS3 compliant, ensuring environmental safety. It is packaged in a tube, facilitating easy handling and storage.

REG1117A-1.8G4 Applications

The REG1117A-1.8G4 is ideal for applications that require a stable and efficient power supply. Some specific use cases include:

• Consumer Electronics: Ideal for powering devices such as smartphones, tablets, and portable gaming consoles where stable voltage and low noise are critical.
• Industrial Control Systems: Suitable for powering sensors, actuators, and microcontrollers in industrial environments where reliability and efficiency are paramount.
• Telecommunications: Can be used in base stations and communication equipment to provide a stable power supply to critical components.
• Automotive Electronics: Useful in automotive applications where the regulator can handle the varying input voltage from the vehicle's electrical system while providing a stable output to sensitive electronics.

Conclusion of REG1117A-1.8G4

The REG1117A-1.8G4 from Texas Instruments is a robust and versatile linear voltage regulator that offers a combination of high performance and reliability. Its fixed 1.8V output, high input voltage range, and ability to deliver up to 1A of current make it suitable for a wide range of applications. The low dropout voltage and high PSRR ensure efficient operation and minimal noise, while the integrated protection features provide added reliability. The SOT223-4 package and surface-mount design make it easy to integrate into compact electronic designs. Overall, the REG1117A-1.8G4 stands out as an excellent choice for engineers seeking a dependable and efficient power supply solution.