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The R3111H371C-T1-FE is a voltage regulator IC manufactured by RICOH. Below are its key specifications, descriptions, and features:

Specifications:

• Manufacturer: RICOH
• Series: R3111
• Output Voltage: 3.7V (fixed)
• Output Current: 150mA (max)
• Input Voltage Range: 2.0V to 6.0V
• Dropout Voltage: 160mV (typical at 100mA load)
• Quiescent Current: 1.0μA (typical)
• Accuracy: ±1.5%
• Package: SOT-23-5
• Operating Temperature Range: -40°C to +85°C
• Features: Low dropout (LDO), ultra-low quiescent current, built-in overcurrent protection

Descriptions:

The R3111H371C-T1-FE is a low-power CMOS-based LDO voltage regulator designed for battery-powered applications. It provides a stable 3.7V output with high efficiency and minimal power consumption, making it suitable for portable and IoT devices.

Features:

• Ultra-Low Quiescent Current: Only 1.0μA (typical) for extended battery life.
• Low Dropout Voltage: 160mV (typical) at 100mA load.
• High Accuracy: ±1.5% output voltage precision.
• Overcurrent Protection: Built-in safety feature.
• Compact Package: SOT-23-5 for space-constrained designs.
• Wide Input Range: 2.0V to 6.0V for flexible power supply options.

This regulator is ideal for applications requiring stable voltage with minimal power loss, such as wearables, sensors, and battery-operated electronics.