The R1114N251B-TR is a voltage regulator IC manufactured by Ricoh. It is part of the R1114 series, known for providing stable output voltage with low supply current. This particular model provides a fixed output voltage of 2.5V.

Applications

• Powering Microcontrollers: Provides a stable 2.5V supply for microcontrollers in embedded systems.
• Sensor Power Supply: Used to power various sensors requiring a stable 2.5V source.
• Portable Devices: Voltage regulation in smartphones, tablets, and other battery-operated devices.
• Wireless Communication Modules: Powers Bluetooth, Wi-Fi, and other wireless communication modules.
• Low-Power IoT Devices: Power management in various Internet of Things (IoT) applications.

Features

• Low Quiescent Current: Minimizes power consumption, which extends battery life.
• High Output Voltage Accuracy: Ensures a stable and precise 2.5V output.
• Overcurrent Protection: Protects the IC and connected circuitry from excessive current.
• Short-Circuit Protection: Prevents damage from short circuits by shutting down the output.
• Thermal Shutdown Protection: Protects the IC from overheating by disabling the output at high temperatures.
• Small Package: Compact SOT-23-5 or similar package for space-constrained applications.

Benefits

• Extended Battery Life: Low quiescent current consumption contributes to longer battery life in portable devices.
• Improved System Stability: High output voltage accuracy ensures stable operation of the powered circuits.
• Protection Against Faults: Overcurrent, short-circuit, and thermal shutdown features prevent damage.
• Compact Design: Small package is suitable for applications where space is limited.
• Simplified Design: Integrated protection features reduce the need for external components.

Additional Details

The R1114N251B-TR typically operates with an input voltage ranging from 2.0V to 6.0V. It is available in a SOT-23-5 package. The operating temperature ranges from -40°C to +85°C. A chip enable (CE) pin is usually included to allow for shutting down the regulator for even lower power consumption when it's not needed.