The R1161D251B-TR-FE is a voltage regulator IC manufactured by Ricoh Electronic Devices Co., Ltd. It is a CMOS-based LDO (Low Dropout) regulator, characterized by its low supply current and high accuracy. This regulator is designed to provide a stable output voltage even when the input voltage fluctuates or the load current changes.

Applications

• Power management in portable devices such as smartphones, tablets, and digital cameras.
• Voltage regulation for microcontrollers and microprocessors.
• Battery-powered equipment requiring efficient power conversion.
• DC-DC converter post-regulation.
• Wireless communication devices.

Features

• Low Dropout Voltage: Ensures stable output even with small input-output voltage differentials.
• High Output Voltage Accuracy: Provides a precise and consistent output voltage.
• Low Supply Current: Maximizes battery life in portable applications.
• Overcurrent Protection: Protects the regulator and the load from damage due to excessive current.
• Thermal Shutdown Protection: Prevents overheating and potential damage to the regulator.
• Small Package: Available in compact packages suitable for space-constrained applications.

Benefits

• Extended Battery Life: The low supply current consumption minimizes power waste, leading to longer operating times for battery-powered devices.
• Stable and Reliable Power Supply: Provides a consistent and accurate output voltage, ensuring reliable operation of connected devices.
• Protection Against Overload and Overheating: Enhances the reliability and longevity of the system by preventing damage from overcurrent and overheating conditions.
• Compact Design: The small package size allows for integration into space-constrained applications.
• Simplified System Design: Requires minimal external components, simplifying the design and reducing the overall cost of the system.

Technical Specifications:

• Output Voltage: 2.5V (specific to this part number)
• Input Voltage Range: Typically 1.6V to 5.5V (check datasheet for exact range)
• Output Current: Up to 300mA (check datasheet for exact current limit)
• Dropout Voltage: Typically 200mV at 100mA (check datasheet for specific value)
• Operating Temperature Range: -40°C to +85°C