The R1173S251B-E2-F is a voltage regulator IC manufactured by Ricoh. It is designed to provide a stable and accurate output voltage of 2.5V, even with variations in input voltage or load current. This regulator is commonly used in a variety of electronic devices to ensure proper operation of sensitive components.

Applications

• Power management in mobile devices: Smartphones, tablets, and other portable electronics.
• Voltage regulation for microcontrollers: Ensuring stable power supply for reliable microcontroller operation.
• Battery-powered devices: Optimizing battery life by providing efficient voltage regulation.
• Sensor circuits: Providing stable voltage to sensitive sensors for accurate readings.
• Industrial control systems: Regulating voltage for various components within control systems.

Features

• High output voltage accuracy: Typically ±1.0% accuracy, ensuring precise voltage regulation.
• Low dropout voltage: Operates with a minimal difference between input and output voltage, maximizing efficiency.
• Low quiescent current: Consumes minimal current when not actively regulating, extending battery life.
• Overcurrent protection: Prevents damage to the regulator and connected circuitry in case of excessive load current.
• Thermal shutdown protection: Shuts down the regulator if it overheats, preventing damage.
• Small package size: Available in compact packages for space-constrained applications.

Benefits

• Improved system stability: Provides a stable and reliable power supply, preventing voltage fluctuations that can cause system malfunctions.
• Extended battery life: Low quiescent current and high efficiency contribute to longer battery life in portable devices.
• Protection against damage: Overcurrent and thermal shutdown protection safeguard the regulator and connected components.
• Simplified design: Requires minimal external components, simplifying circuit design and reducing board space.
• Increased reliability: Robust design and protection features ensure reliable operation in harsh environments.

Additional Details

The R1173S251B-E2-F typically operates with an input voltage range of 1.7V to 5.5V. It is available in a SOT-23-5 package. The operating temperature range is -40°C to +85°C. It is designed to be RoHS compliant. This regulator is suitable for a wide range of applications where a stable and efficient 2.5V power supply is required. The device also often integrates a chip enable pin for easy on/off control and power saving during periods of inactivity.