The R3111Q221A5-TR is a high-accuracy voltage regulator IC from Ricoh, designed for applications requiring a stable and precise 2.2V power supply. It features low supply current consumption, internal short-circuit protection, and an auto-discharge function, all within a compact SOT-23-5 package. The "-TR" suffix indicates tape and reel packaging for automated assembly.

Applications:

• Powering Microcontrollers in IoT Devices
• Voltage Regulation for Bluetooth Modules
• Powering Low-Power Sensors
• Real-Time Clock (RTC) Power Supplies
• Backup Power Systems

Features:

• Output Voltage: 2.2V (Fixed)
• High Output Voltage Accuracy: ±0.8%
• Low Supply Current: 95 μA (Typical)
• Maximum Input Voltage: 6.5V
• Output Voltage Temperature Coefficient: ±30 ppm/°C (Typical)
• Short-Circuit Protection: Integrated to prevent damage from output shorts.
• Auto-Discharge Function: Rapidly discharges the output capacitor when disabled.
• Package: SOT-23-5
• Operating Temperature Range: -40°C to +85°C

Benefits:

• Stable Power Supply: The high-accuracy output voltage ensures reliable operation of connected components.
• Extended Battery Life: The low supply current minimizes power consumption in battery-powered applications.
• Protection Against Damage: The short-circuit protection safeguards the regulator and connected components.
• Simplified Circuit Design: The auto-discharge function simplifies the design of power-down circuits.
• Small Footprint: The compact SOT-23-5 package is ideal for space-constrained applications.

Additional Details:

The R3111Q221A5-TR provides a fixed 2.2V output, making it suitable for powering a variety of low-voltage microcontrollers and other electronic components. The auto-discharge feature ensures that the output capacitor is quickly discharged when the IC is disabled, preventing unintended behavior. The high-accuracy output and temperature stability contribute to its reliable performance across varying operating conditions. The tape and reel packaging makes it suitable for high-volume automated assembly.