The R1115Z281B-TR-F is a low-dropout (LDO) voltage regulator manufactured by Ricoh. It is part of the R1115 series, which is known for its low supply current, high accuracy, and small package size. This specific model provides a stable 2.8V output voltage, making it suitable for a variety of portable devices and power management applications.

Applications

• Powering Microcontrollers: Providing a stable voltage supply for microcontrollers in embedded systems.
• Mobile Phones and Smartphones: Used in power management circuits to regulate voltage for various components within the device.
• Wearable Devices: Suited for use in smartwatches, fitness trackers, and other wearable electronics.
• IoT (Internet of Things) Devices: Ideal for providing regulated power in low-power IoT applications.
• Portable Audio Players: Regulates voltage for audio amplifiers and other circuits in portable music players.

Features

• Output Voltage: Fixed 2.8V output voltage with high accuracy.
• Low Supply Current: Minimizes power consumption, extending battery life.
• Input Voltage Range: Supports a wide range of input voltages for flexibility in power source selection.
• Overcurrent Protection: Protects the regulator and connected devices from damage due to excessive current flow.
• Thermal Shutdown Protection: Prevents overheating and potential damage at high temperatures.
• Small Package: Available in a compact package for space-constrained applications.

Benefits

• Stable Voltage Supply: Ensures a consistent and reliable voltage source for sensitive electronic components.
• Extended Battery Life: Low supply current helps maximize battery life in portable devices.
• Protection Against Overload: Built-in overcurrent and thermal protection mechanisms enhance system reliability.
• Compact Design: Small package size allows for easy integration into space-limited applications.
• Wide Operating Range: Suitable for a variety of operating conditions due to its wide input voltage range.

Additional Details

The R1115Z281B-TR-F is usually supplied in a small SOT-23 or similar surface-mount package. The TR suffix usually indicates that the part is supplied on tape and reel, making it appropriate for automated assembly. This component's low quiescent current makes it especially ideal for battery powered systems where long run-time is a desired feature. It typically incorporates short-circuit protection to prevent damage in case of an output short. Datasheets provide specific details on pin configurations, absolute maximum ratings, and performance characteristics. It's often used when a simple, efficient, and reliable 2.8V regulated power supply is required.