The R1111N401B-TR-F is a voltage regulator IC produced by Ricoh. This regulator is designed to provide a stable 4.0V output, ideal for various electronic applications needing precise voltage control. The "-TR-F" suffix often indicates a specific packaging or tape and reel option for automated assembly.

Applications:

• Microcontroller Power Supply: Providing a stable and clean 4.0V supply for various microcontrollers.
• Sensor Power: Supplying a reliable voltage source for sensors used in various applications.
• Portable Devices: Power management in devices like portable audio players or handheld instruments.
• Wireless Communication Devices: Voltage regulation in Bluetooth modules, Zigbee devices, and other wireless transceivers.
• General-Purpose Voltage Regulation: Providing a stable voltage rail in a wide range of electronic circuits.

Features:

• High Output Voltage Accuracy: Offers a precise and stable 4.0V output voltage.
• Low Dropout Voltage: Ensures efficient operation even with minimal input-output voltage differential.
• Low Quiescent Current: Minimizes power consumption, crucial for battery-powered applications.
• Overcurrent Protection: Safeguards the regulator and connected circuits from damage due to excessive current.
• Thermal Shutdown Protection: Prevents overheating and potential damage by shutting down the regulator if the temperature exceeds a safe threshold.
• Enable/Disable Control: Allows for power saving by disabling the regulator when not needed.
• Small Package Size: Suitable for use in compact and portable electronic devices.

Benefits:

• Stable and Reliable Power: Provides a consistent voltage supply, ensuring proper operation of connected components.
• Extended Battery Life: Low quiescent current helps maximize battery life in portable devices.
• Protection Against Faults: Overcurrent and thermal shutdown features enhance the robustness and reliability of the system.
• Efficient Power Conversion: Low dropout voltage maximizes efficiency and minimizes power dissipation.
• Simplified Design: Requires minimal external components, simplifying circuit design and reducing board space.

The R1111N401B-TR-F's low dropout voltage is essential for systems where the input voltage might be close to the desired output voltage. The low quiescent current makes it an excellent choice for battery-powered and energy-sensitive applications. The built-in protection features ensure a robust and reliable power supply solution.

Technical Specifications (Typical):

• Output Voltage: 4.0V
• Input Voltage Range: Consult datasheet (Typically slightly above 4.0V to a maximum voltage)
• Dropout Voltage: Consult datasheet (Typically low, a few hundred millivolts at rated current)
• Quiescent Current: Consult datasheet (Typically in the microamp range)
• Operating Temperature Range: Consult datasheet (Typically -40°C to +85°C)