The RP119N281D-TR is a low-dropout (LDO) regulator manufactured by Ricoh. This LDO regulator is designed for applications that require a stable 2.8V output voltage from a battery or other power source. It is well-suited for battery-powered devices and systems that demand efficient power management and minimal power consumption. This device features low quiescent current and includes built-in protection features to ensure reliable operation.

Applications

• Portable Electronics: Powering microcontrollers, memory, and other low-voltage components in smartphones, tablets, and digital cameras.
• Wireless Communication Modules: Providing a stable voltage supply for Bluetooth, Wi-Fi, and Zigbee modules.
• Wearable Devices: Regulating voltage for sensors, displays, and processing units in smartwatches and fitness trackers.
• IoT Devices: Supplying power to sensors, communication modules, and microcontrollers in various Internet of Things applications.
• Battery-Powered Systems: Extending battery life in devices that require efficient power management.

Features

• Low Dropout Voltage: Ensures stable output voltage even when the input voltage is close to the output voltage.
• Fixed Output Voltage: Provides a precise and stable 2.8V output.
• Low Quiescent Current: Minimizes power consumption in standby mode, extending battery life.
• Overcurrent Protection: Protects the regulator and the load from damage due to excessive current draw.
• Thermal Shutdown Protection: Protects the regulator from overheating by shutting it down when the junction temperature exceeds a certain limit.
• Short-Circuit Protection: Shuts down the regulator in the event of a short circuit, preventing damage to the circuit.

Benefits

• Extended Battery Life: Low quiescent current and high efficiency contribute to longer battery life in portable devices.
• Stable Power Supply: Provides a clean and stable voltage supply for sensitive electronic components, improving system performance and reliability.
• Robust Protection: Overcurrent, short-circuit, and thermal shutdown protection features protect the regulator and the load from damage.
• Simplified Design: Fixed output voltage and integrated protection features simplify circuit design and reduce the number of external components required.
• Compact Size: Available in small package sizes for space-constrained applications.

Additional Details

The RP119N281D-TR typically operates with an input voltage range compatible with single-cell lithium-ion batteries or similar power sources. It is commonly available in a DFN (Dual Flat No-Leads) or similar small form factor package. The 'TR' suffix often indicates tape and reel packaging for automated assembly. An enable pin is included for controlling the on/off state, which helps minimize power consumption.