Texas Instruments

REG103UA-3.3

REG103UA-3.3 Description

The REG103UA-3.3 from Texas Instruments is a high-performance, fixed-output linear voltage regulator designed to deliver a stable 3.3V output with a maximum current of 500mA. This surface-mount IC is housed in an 8-SOIC package and is ideal for applications requiring precise voltage regulation with low dropout and minimal quiescent current. With an input voltage range up to 15V, it offers robust performance in diverse power supply scenarios. The device features enable control, allowing for power management, and includes over-current and over-temperature protection for enhanced reliability. Its 65dB PSRR (120Hz) ensures excellent noise rejection, making it suitable for sensitive analog and digital circuits.

REG103UA-3.3 Features

• Fixed 3.3V Output: Ensures stable voltage for low-power devices.
• Low Dropout Voltage: 0.28V @ 500mA maximizes efficiency in battery-operated systems.
• Low Quiescent Current: 0.7 mA minimizes power loss in standby modes.
• High PSRR: 65dB (120Hz) reduces noise interference in sensitive applications.
• Protection Features: Over-current and over-temperature safeguards enhance durability.
• Enable Pin: Allows for external power control, improving energy efficiency.
• RoHS3 Compliant & REACH Unaffected: Meets environmental and regulatory standards.
• Wide Input Range (Up to 15V): Compatible with various power sources.

REG103UA-3.3 Applications

The REG103UA-3.3 is ideal for:

• Portable Electronics: Battery-powered devices like IoT sensors and wearables benefit from its low dropout and quiescent current.
• Industrial Control Systems: Reliable voltage regulation for PLCs, motor controllers, and instrumentation.
• Consumer Electronics: Power management in smart home devices, audio equipment, and embedded systems.
• Automotive Modules: Auxiliary power supplies where stable voltage and protection features are critical.
• Medical Devices: Low-noise operation suits sensitive diagnostic and monitoring equipment.

Conclusion of REG103UA-3.3

The REG103UA-3.3 stands out as a versatile, high-efficiency linear regulator with low dropout, excellent noise rejection, and robust protection features. Its combination of low power consumption, enable control, and wide input range makes it a preferred choice for modern electronic designs. While it is currently in Last Time Buy status, its performance and reliability ensure it remains a strong solution for applications demanding precision and durability. Engineers seeking a compact, high-performance regulator for 3.3V systems will find this IC exceptionally well-suited to their needs.