The R1141Q291B-TR-FA is a low-dropout (LDO) voltage regulator manufactured by Ricoh. As part of the R1141Q series, it is designed to provide a stable and accurate output voltage, making it ideal for various portable and battery-powered applications. This specific model offers a fixed output voltage of 2.9V. Its key characteristics include low current consumption, a small package size, and built-in protection features.

Applications

• Portable Electronics: Powering microcontrollers, sensors, and other components in devices like smartphones, tablets, and portable media players.
• Wearable Technology: Providing stable voltage for smartwatches, fitness trackers, and other wearable devices.
• IoT Devices: Regulating voltage for sensors, communication modules, and microprocessors in low-power IoT applications.
• Wireless Communication: Supplying power to RF transceivers, Bluetooth modules, and other wireless communication components.
• Battery-Powered Equipment: Ensuring stable operation of battery-powered devices such as remote controls and handheld tools.

Features

• Fixed Output Voltage: 2.9V regulated output.
• Low Dropout Voltage: Maintains stable output even with a small difference between input and output voltage.
• Low Quiescent Current: Minimizes current consumption for extended battery life.
• High Output Voltage Accuracy: Provides a precise and reliable voltage supply for sensitive circuits.
• Small Package: Available in compact packages for space-constrained applications.
• Overcurrent Protection: Protects the regulator and load from excessive current.
• Thermal Shutdown Protection: Prevents damage due to overheating.

Benefits

• Stable and Reliable Power: Ensures consistent and accurate voltage for optimal performance of connected devices.
• Extended Battery Life: Low quiescent current reduces battery drain, prolonging operating time.
• Compact Design: Small package size allows for easy integration into small form-factor devices.
• Enhanced Protection: Overcurrent and thermal shutdown features protect the regulator and connected components from damage.
• Simplified Design: Fixed output voltage simplifies circuit design and reduces the need for external components.

Additional Details

The R1141Q291B-TR-FA is typically packaged in a small SOT-23 or similar surface-mount package. It's designed for use with ceramic capacitors to ensure stable operation and minimize noise. The typical operating temperature ranges from -40°C to +85°C. Input voltage typically ranges from 1.6V to 5.5V offering a wide operating range. It is RoHS compliant.