Texas Instruments

REG103GA-5

REG103GA-5 Description

The REG103GA-5 from Texas Instruments is a high-performance, fixed-output linear voltage regulator designed to deliver a stable 5V output with a maximum current of 500mA. This surface-mount IC, housed in a SOT-223-6 package, is optimized for low-dropout performance, featuring a maximum dropout voltage of 0.28V at 500mA, making it ideal for power-sensitive applications. With an input voltage range up to 15V, it ensures reliable operation in diverse power environments. The device boasts a low quiescent current of 0.7mA and a high PSRR of 65dB (120Hz), minimizing power loss and noise for precision applications.

REG103GA-5 Features

• Fixed 5V Output: Ensures consistent voltage regulation for downstream components.
• Low Dropout Voltage: 0.28V @ 500mA maximizes efficiency in battery-powered systems.
• Enable Control: Allows for power management via an external enable pin.
• Robust Protection: Includes over-current and over-temperature safeguards for enhanced reliability.
• Low Quiescent Current: 0.7mA reduces standby power consumption.
• High PSRR: 65dB (120Hz) minimizes ripple in noise-sensitive circuits.
• RoHS3 & REACH Compliant: Meets environmental and safety standards.
• Wide Input Range: Supports up to 15V, accommodating various power sources.

REG103GA-5 Applications

The REG103GA-5 is ideal for applications requiring stable, low-noise power delivery, such as:

• Portable Electronics: Battery-operated devices like handheld instruments and IoT sensors benefit from its low dropout and quiescent current.
• Industrial Control Systems: Provides reliable voltage regulation in PLCs, motor controllers, and automation equipment.
• Consumer Electronics: Suitable for set-top boxes, routers, and audio/video peripherals.
• Embedded Systems: Ensures clean power for microcontrollers, FPGAs, and analog circuits.

Conclusion of REG103GA-5

The REG103GA-5 stands out as a high-efficiency, low-noise linear regulator with robust protection features, making it a versatile choice for demanding power management tasks. Its low dropout, enable control, and high PSRR make it superior to basic regulators, particularly in portable and noise-sensitive designs. While classified as Last Time Buy, its ROHS3 compliance and industrial-grade reliability ensure it remains a viable solution for legacy and new designs requiring a dependable 5V supply.