The R3111Q221A-TR-FA is a voltage regulator IC manufactured by Ricoh. It's designed to provide a stable and accurate 2.2V output voltage with low supply current. This regulator features integrated short-circuit protection and an auto-discharge function. The device is packaged in a small SOT-23-5 package. The “-TR” indicates tape and reel packaging and “-FA” may indicate a specific lot or production variation.

Applications:

• Powering Microcontrollers
• Powering Sensors
• Powering RF Transmitters/Receivers
• Portable Electronic Devices
• Wearable Devices

Features:

• Fixed Output Voltage: 2.2V
• High Accuracy Output Voltage: ±0.8%
• Low Supply Current: Typically 95μA
• Input Voltage Range: Up to 6.5V
• Internal Short-Circuit Protection
• Auto-Discharge Function
• Operating Temperature Range: -40°C to +85°C
• Package: SOT-23-5

Benefits:

• Stable and Accurate Power Supply: Ensures consistent and reliable operation of connected devices.
• Extended Battery Life: Low supply current minimizes power consumption in battery-powered applications.
• Protection Against Overload: Short-circuit protection prevents damage to the regulator and connected circuitry.
• Simplified Circuit Design: The auto-discharge function simplifies power-down sequencing.
• Compact Size: The small SOT-23-5 package is ideal for space-constrained applications.

Additional Details:

The R3111Q221A-TR-FA voltage regulator is designed for applications demanding a consistent and reliable 2.2V power supply. Its low quiescent current makes it suitable for battery-operated devices. The short-circuit protection enhances the robustness of the overall system. The auto-discharge functionality ensures that the output capacitor is discharged quickly when the regulator is disabled, preventing unexpected behavior in downstream circuitry. The tape and reel packaging facilitates automated assembly.