The Ricoh R1110N251A-TR is a CMOS-based voltage regulator featuring a low dropout voltage and low supply current. It is designed for use in a wide range of portable and battery-powered applications. The “-TR” suffix indicates that the device is supplied in tape and reel packaging for automated assembly.

Applications

• Portable Electronics: Ideal for use in smartphones, tablets, and other battery-powered devices.
• Wearable Devices: Suited for smartwatches, fitness trackers, and other wearable technology.
• IoT Devices: Can be used in various IoT devices, such as sensors and wireless modules.
• Wireless Communication Devices: Suitable for powering RF modules and other communication components.
• Power Management Systems: Employed in power management circuits for efficient voltage regulation.

Features

• Low Dropout Voltage: Ensures stable output voltage even when the input voltage is close to the output voltage.
• Low Supply Current: Minimizes power consumption, extending battery life in portable applications.
• Overcurrent Protection: Protects the device and connected components from damage due to excessive current.
• Thermal Shutdown Protection: Prevents overheating by shutting down the device when the junction temperature exceeds a certain limit.
• Small Package: Available in a compact package, making it suitable for space-constrained applications.
• High Output Voltage Accuracy: Provides a highly accurate and stable output voltage.

Benefits

• Extended Battery Life: Low supply current and efficient voltage regulation contribute to longer battery life in portable devices.
• Improved System Reliability: Overcurrent and thermal shutdown protection enhance the reliability and longevity of the system.
• Stable Performance: Accurate output voltage ensures stable performance of the powered devices.
• Compact Design: Small package size allows for compact and space-saving designs.
• Easy Integration: Simple design and functionality make it easy to integrate into various applications.

Additional Details

The R1110N251A-TR typically provides a fixed output voltage of 2.5V. It operates with a wide input voltage range, generally from 1.6V to 5.5V. The output current capability is typically around 300mA. It comes in a SOT-23-5 package. It features a chip enable function, allowing the device to be turned on and off to further reduce power consumption. The device is also stable with ceramic capacitors, which help reduce the overall cost and size of the solution. The thermal shutdown feature activates at around 150°C, protecting the device from thermal damage.