The R5487L113KD-TR is a voltage regulator IC designed and manufactured by Nisshinbo Micro Devices Inc. It is a low-dropout (LDO) regulator that provides a stable output voltage even when the input voltage is close to the output voltage. This feature is particularly useful in battery-powered devices where the battery voltage decreases over time.

Applications

• Power Management in Portable Devices: Supplies stable voltage to microcontrollers, sensors, and other components in smartphones, tablets, and wearables.
• Post-Regulation for Switching Regulators: Reduces ripple and noise from switching regulators for sensitive analog circuits.
• Battery-Powered Equipment: Provides a regulated voltage supply for battery-powered systems ensuring stable and reliable operation.
• Wireless Communication Devices: Used in Bluetooth modules, WiFi modules, and other wireless communication devices for stable power supply.
• Industrial Control Systems: Supplies clean power to sensors and control circuits in industrial environments.

Features

• Low Dropout Voltage: Operates with a small difference between input and output voltage, maximizing battery life.
• High Output Voltage Accuracy: Provides a stable and precise output voltage for reliable operation.
• Low Quiescent Current: Minimizes power consumption, especially in standby mode.
• Overcurrent Protection: Protects the regulator and the load from damage due to excessive current.
• Thermal Shutdown Protection: Prevents overheating and damage to the regulator.

Benefits

• Extended Battery Life: Low dropout voltage and quiescent current contribute to longer battery life in portable devices.
• Improved System Reliability: Stable and precise output voltage ensures reliable operation of connected devices.
• Protection Against Overload Conditions: Overcurrent and thermal shutdown protection prevent damage to the regulator and the load.
• Reduced Noise and Ripple: Provides a clean power supply for sensitive analog circuits.
• Simplified Circuit Design: Integrated protection features reduce the need for external components.

Additional Details

The R5487L113KD-TR typically features an output voltage of 1.1V (check datasheet for specifics), and is available in a small package like DFN or SOT. It often operates with an input voltage range of 1.7V to 5.5V. It offers excellent transient response to sudden load changes. The output capacitor affects the stability of the regulator, and the datasheet usually recommends specific values. Its operating temperature range typically spans from -40°C to +85°C.