The R1121N261B-TR is a low-dropout (LDO) voltage regulator manufactured by Ricoh. It is designed to provide a stable 2.6V output voltage from a higher or fluctuating input voltage. The 'TR' suffix indicates that it is supplied on tape and reel for automated assembly.

Applications

• Powering Microcontrollers: Provides a stable voltage source for microcontroller-based systems.
• Sensor Applications: Regulates voltage for analog and digital sensors.
• Portable Medical Devices: Ensures stable power for accurate measurements.
• Industrial Control Systems: Provides a reliable voltage source in harsh environments.
• Data Acquisition Systems: Powers analog-to-digital converters (ADCs) and digital-to-analog converters (DACs).

Features

• Low Dropout Voltage: Operates with a minimal voltage difference between input and output for maximum efficiency.
• High Output Voltage Accuracy: Provides a stable and precise output voltage, typically within a tight tolerance.
• Overcurrent Protection: Protects the device and the load from damage due to excessive current draw.
• Thermal Shutdown Protection: Prevents damage from overheating.
• Enable/Disable Control: Allows for shutting down the regulator to conserve power when not needed.
• Small Package Size: Suitable for compact and portable applications.

Benefits

• Improved Battery Life: Efficient regulation and low quiescent current extend the operating time of battery-powered devices.
• Increased System Reliability: Stable voltage output ensures consistent performance and reduces the risk of component failure.
• Protection Against Damage: Overcurrent and thermal shutdown features safeguard the device and connected circuitry.
• Reduced Board Space: Small package size enables compact designs.
• Lower Power Consumption: Enable/disable control and low quiescent current minimize energy waste.

Additional Details

The R1121N261B-TR typically operates with ceramic capacitors, which are known for their stability and low ESR (Equivalent Series Resistance). This contributes to the regulator's overall stability and performance. Datasheet specifications provide details on the input voltage range, output voltage tolerance, maximum output current, and thermal resistance. Always consult the official Ricoh datasheet before using this component to ensure proper application and performance. It uses SMT for mounting.