The R1122N451A-TR-FA is a voltage regulator IC manufactured by Ricoh. This component is designed to provide a stable and regulated output voltage, crucial for various electronic devices and systems. It is particularly useful in applications where maintaining a consistent voltage supply is critical for optimal performance and reliability.

Applications

• Power Management Systems: Used in devices requiring efficient power regulation.
• Battery-Powered Devices: Ideal for maintaining stable voltage in portable electronics.
• Microcontroller Power Supplies: Provides a clean and stable power source for microcontrollers.
• Sensor Power Supplies: Ensures accurate readings from sensors by providing stable power.

Features

• High Accuracy: Offers precise voltage regulation.
• Low Dropout Voltage: Operates effectively even with a small difference between input and output voltage.
• Overcurrent Protection: Protects the device and connected circuits from excessive current flow.
• Thermal Shutdown: Prevents overheating and damage by shutting down the regulator at high temperatures.
• Small Package: Compact size allows for use in space-constrained applications.

Benefits

• Stable Output Voltage: Ensures consistent performance of connected devices.
• Improved Reliability: Protects against voltage fluctuations and overcurrent conditions.
• Extended Battery Life: Efficient regulation minimizes power waste, extending battery life in portable devices.
• Simplified Design: Easy to integrate into various electronic circuits.

Technical Specifications

The R1122N451A-TR-FA typically operates with an input voltage range of 2.0V to 6.0V and provides a fixed output voltage of 4.5V. The dropout voltage is typically around 200mV at a load current of 100mA. The overcurrent protection threshold is set at 300mA. It comes in a SOT-23-5 package. The operating temperature range is -40°C to +85°C.