The R1141Q281B-TR is a low-dropout (LDO) voltage regulator manufactured by Ricoh. It's designed to provide a stable and regulated output voltage, even when the input voltage is close to the output voltage. This is especially important in battery-powered applications where the battery voltage declines over time.

Applications

• Battery-Powered Devices: Smartphones, tablets, portable media players, and other mobile devices.
• Wearable Electronics: Smartwatches, fitness trackers, and other wearable devices.
• Wireless Communication: Bluetooth modules, Wi-Fi modules, and other wireless components.
• Power Management Systems: Used to regulate voltage for microcontrollers, sensors, and other sensitive electronic components.

Features

• Low Dropout Voltage: Operates with a minimal voltage difference between the input and output.
• High Output Voltage Accuracy: Provides a stable and precise output voltage.
• Low Quiescent Current: Minimizes power consumption in standby mode, extending battery life.
• Overcurrent Protection: Protects the regulator and the connected load from excessive current.
• Thermal Shutdown Protection: Protects the regulator from damage due to overheating.
• Small Package Size: Available in compact packages for space-constrained applications.

Benefits

• Extended Battery Life: Low quiescent current and low dropout voltage contribute to longer operating times in battery-powered devices.
• Stable and Reliable Operation: The high output voltage accuracy ensures consistent performance of connected components.
• Enhanced System Protection: Overcurrent and thermal shutdown features protect against potential damage.
• Reduced Board Space: The small package size allows for more compact and efficient designs.
• Simplified Design: Integrated features reduce the need for external components, simplifying circuit design.

Additional Details

The R1141Q281B-TR has a fixed output voltage of 2.8V. It is typically available in a SOT-23-5 package. The operating temperature range is typically from -40°C to +85°C. It also provides good transient response, making it suitable for applications with fluctuating load currents. Typically this part is RoHS compliant.