The RP119N281D-TR-FF is a low-dropout (LDO) regulator from Ricoh, designed to provide a stable 2.8V output. This regulator is intended for battery-powered applications requiring efficient power management and low power consumption. It features low quiescent current, excellent transient response, and integrated protection functions to ensure reliable performance in various portable devices. The small package size makes it suitable for space-constrained applications.

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 in IoT devices.
• Wearable Devices: Regulating voltage for sensors, displays, and processing units in smartwatches and fitness trackers.
• IoT Devices: Powering 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 Performance: 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: Small package size allows for use in space-constrained applications.

Additional Details

The RP119N281D-TR-FF typically operates with an input voltage range compatible with single-cell lithium-ion batteries or similar power sources. It is available in a DFN (Dual Flat No-Leads) package for efficient PCB assembly. The "TR" suffix likely indicates tape and reel packaging. The "FF" likely indicates a specific revision or packaging characteristic. An enable pin is included to allow external control of the on/off state and minimize power consumption when the 2.8V output is not needed.