The R3111Q251C-TR is a voltage regulator IC from Ricoh. It offers a fixed 2.5V output with high accuracy and low supply current. The device includes built-in short-circuit protection and an auto-discharge function, all within a compact SOT-23-5 package. The "-TR" suffix designates tape and reel packaging designed for automated assembly.

Applications:

• Power Supply for Microcontrollers
• Voltage Regulation for Low-Power Sensors
• Powering Real-Time Clocks (RTCs)
• Power Management in Portable Devices
• General-Purpose Voltage Regulation

Features:

• Fixed Output Voltage: 2.5V
• High Output Voltage Accuracy: ±0.8%
• Low Supply Current: 95 μA (Typical)
• Input Voltage Range: Up to 6.5V
• Output Voltage Temperature Coefficient: ±30 ppm/°C (Typical)
• Short-Circuit Protection: Protects the IC and connected components from damage due to short circuits.
• Auto-Discharge Function: Quickly discharges the output capacitor when the IC is disabled.
• Package: SOT-23-5
• Operating Temperature Range: -40°C to +85°C

Benefits:

• Stable and Reliable Power: The high-accuracy output ensures consistent and dependable operation of connected circuits.
• Extended Battery Life: Low supply current minimizes power consumption in battery-powered applications.
• Robust Protection: Short-circuit protection safeguards against potential damage.
• Simplified Circuit Design: The auto-discharge function simplifies power-down circuitry.
• Compact Footprint: The small SOT-23-5 package saves valuable board space.

Additional Details:

The R3111Q251C-TR offers a stable and reliable 2.5V supply, making it suitable for numerous low-power applications. Its low quiescent current makes it highly suitable for battery-operated devices. The short-circuit protection enhances the robustness of the overall system. The auto-discharge function quickly discharges the output capacitor when the regulator is disabled, which prevents unexpected behavior in downstream circuitry. The tape and reel packaging facilitates high-volume automated assembly.