The R3111Q251A-TR is a voltage regulator IC manufactured by Ricoh. It is designed to provide a stable and accurate 2.5V output voltage with low supply current. This regulator incorporates internal short-circuit protection and an auto-discharge function. It is housed in a small SOT-23-5 package. The suffix "-TR" indicates tape and reel packaging for automated assembly.

Applications:

• Powering Microcontrollers in Embedded Systems
• Powering Wireless Sensors
• Powering Real-Time Clocks (RTCs)
• Powering Low-Power Communication Modules (e.g., Bluetooth Low Energy)
• General-Purpose Voltage Regulation in Portable Devices

Features:

• Fixed Output Voltage: 2.5V
• High Accuracy Output Voltage: ±0.8%
• Low Supply Current: 95μA (Typical)
• Input Voltage Range: Up to 6.5V
• Internal Short-Circuit Protection: Prevents damage from short circuits.
• Auto-Discharge Function: Rapidly discharges the output capacitor when disabled.
• Package: SOT-23-5
• Operating Temperature Range: -40°C to +85°C

Benefits:

• Stable and Precise Voltage Supply: Ensures reliable operation of connected devices and circuits.
• Extended Battery Life: Low quiescent current minimizes power consumption in battery-powered applications.
• Robust Protection: Short-circuit protection protects the regulator and downstream circuitry from damage.
• Simplified Circuit Design: The auto-discharge function simplifies power-down sequencing and eliminates the need for external components.
• Compact Size: The small SOT-23-5 package is ideal for space-constrained applications.

Additional Details:

The R3111Q251A-TR voltage regulator provides a stable and accurate 2.5V output, making it ideal for a wide range of applications. Its low quiescent current and high accuracy contribute to improved energy efficiency and reliable performance. The short-circuit protection and auto-discharge functions enhance the overall robustness and ease of use. The tape and reel packaging facilitates automated assembly processes, making it well-suited for high-volume production.