The R1172S261B-E2-F is a voltage regulator manufactured by Ricoh. This is a LDO (Low Dropout) voltage regulator designed for portable devices and other applications requiring high efficiency and low power consumption. This regulator is known for its small size and high accuracy, making it suitable for space-constrained applications.

Applications

• Mobile phones and smartphones: Power management for various internal components.
• Tablets and portable media players: Ensuring stable voltage supply.
• Wearable devices (smartwatches, fitness trackers): Efficient power regulation for extended battery life.
• IoT (Internet of Things) devices: Powering sensors and communication modules.
• Wireless communication devices: Voltage regulation in RF circuits.

Features

• Low Dropout Voltage: Ensures stable output voltage even with a small difference between input and output voltage.
• High Output Voltage Accuracy: Provides a precise and stable output voltage, critical for sensitive electronic components.
• Low Quiescent Current: Minimizes power consumption when the regulator is in operation but not supplying a significant load.
• Overcurrent Protection: Protects the regulator and connected components from damage due to excessive current.
• Thermal Shutdown Protection: Protects the regulator from overheating under fault conditions.
• Small Package Size: Allows for use in compact electronic devices.

Benefits

• Extended Battery Life: Low quiescent current and high efficiency contribute to longer battery life in portable devices.
• Stable Performance: High output voltage accuracy ensures consistent performance of connected components.
• Reliable Operation: Overcurrent and thermal shutdown protection enhance reliability and prevent damage.
• Compact Design: Small package size enables integration into space-constrained applications.
• Reduced Power Consumption: Efficient voltage regulation minimizes energy waste.

Additional Details

The R1172S261B-E2-F typically operates with an input voltage range of 1.7V to 5.5V and provides a fixed output voltage of 2.6V. It is available in a small DFN(PLP) package. This LDO regulator also incorporates a chip enable function, allowing the regulator to be turned on and off via an external signal, further reducing power consumption when the regulated voltage is not needed.