Texas Instruments

REG103GA-5/2K5G4

REG103GA-5/2K5G4 Description

The REG103GA-5/2K5G4 is a linear regulator IC designed by Texas Instruments, offering a fixed output voltage of 5V and capable of delivering up to 500mA of output current. This device is housed in a Surface Mount SOT223-6 package, making it suitable for compact and high-density PCB designs. Despite its small form factor, the REG103GA-5/2K5G4 boasts a maximum input voltage of 15V and a low dropout voltage of 0.28V at 500mA, ensuring efficient power conversion even under varying input conditions.

REG103GA-5/2K5G4 Features

• Fixed Output Voltage: The REG103GA-5/2K5G4 provides a stable 5V output, ideal for applications requiring a consistent power supply.
• High Efficiency: With a low dropout voltage of 0.28V at 500mA, this regulator maintains high efficiency even when the input voltage is close to the output voltage.
• Low Quiescent Current: The device features a quiescent current of only 0.7mA, minimizing power consumption in standby mode.
• Enable Control Feature: The enable pin allows for dynamic control of the regulator, enabling power-saving modes and reducing power consumption when not in use.
• Protection Features: Integrated over-current and over-temperature protection ensures reliable operation and protects the device from damage under abnormal conditions.
• High PSRR: A Power Supply Rejection Ratio (PSRR) of 65dB at 120Hz helps in filtering out noise from the input power supply, resulting in a cleaner output voltage.
• Compliance and Reliability: The REG103GA-5/2K5G4 is REACH unaffected and RoHS3 compliant, ensuring it meets environmental and safety standards. It also has a Moisture Sensitivity Level (MSL) of 2, suitable for a 1-year shelf life.

REG103GA-5/2K5G4 Applications

The REG103GA-5/2K5G4 is well-suited for a variety of applications where a stable and efficient power supply is required. Its compact size and high efficiency make it ideal for:

• Consumer Electronics: Portable devices, smartphones, and tablets benefit from the low dropout voltage and high efficiency, ensuring longer battery life and reduced power consumption.
• Industrial Equipment: Control systems, sensors, and actuators can rely on the stable 5V output and protection features to ensure reliable operation in harsh environments.
• Telecommunications: Base stations and network equipment can utilize the REG103GA-5/2K5G4 for stable power supply to critical components, ensuring uninterrupted service.
• Automotive Electronics: In-vehicle infotainment systems and electronic control units can benefit from the robust protection features and high efficiency, contributing to overall system reliability.

Conclusion of REG103GA-5/2K5G4

The REG103GA-5/2K5G4 from Texas Instruments is a versatile and efficient linear regulator IC, offering a fixed 5V output with a maximum output current of 500mA. Its low dropout voltage, low quiescent current, and enable control feature make it an excellent choice for applications requiring high efficiency and dynamic power management. The integrated protection features and compliance with environmental standards further enhance its reliability and suitability for a wide range of applications. Despite being marked as obsolete, the REG103GA-5/2K5G4 remains a reliable option for designers seeking a compact and efficient power management solution.