The RT9191-36CB is a high-performance, low-dropout (LDO) voltage regulator manufactured by Richtek USA Inc. It is designed to provide a stable and accurate 3.6V output voltage, even under varying input voltage and load conditions. This regulator is well-suited for a wide range of applications requiring efficient power management and a small footprint.

Applications

• Portable Electronics: Ideal for powering smartphones, tablets, and other mobile devices to extend battery life.
• Wireless Communication Devices: Provides a stable voltage supply for Bluetooth modules, Wi-Fi transceivers, and other RF components.
• Microcontroller-Based Systems: Regulates voltage for microcontrollers, sensors, and other digital logic circuits in embedded systems.
• Battery-Powered Equipment: Ensures a stable voltage supply for sensors, actuators, and other components in various battery-powered applications.
• Consumer Electronics: Suitable for MP3 players, digital cameras, and other devices requiring a regulated power supply.

Features

• Low Dropout Voltage: Maintains a stable output voltage even with a minimal difference between the input and output voltage.
• High Output Accuracy: Delivers a precise and stable output voltage, typically within a few percent of the nominal value.
• Low Quiescent Current: Minimizes power consumption when the regulator is in standby mode, maximizing battery life.
• Over-Current Protection: Protects the regulator and the connected load from damage caused by excessive current draw.
• Short-Circuit Protection: Prevents damage to the regulator in the event of a short circuit at the output.
• Thermal Shutdown Protection: Protects the regulator from overheating by automatically shutting down the output when the junction temperature exceeds a safe limit.
• Enable/Disable Control: Allows the regulator to be turned on and off via an external signal, further reducing power consumption when not needed.
• Compact Package: Typically available in small surface-mount packages, such as SOT-23 or DFN, suitable for space-constrained applications.

Benefits

• Extended Battery Life: The low quiescent current and high efficiency of the RT9191-36CB contribute to extended battery life in portable applications.
• Reliable Voltage Supply: Ensures stable operation of connected components by providing a precise and consistent 3.6V output voltage.
• Protection Against Damage: Over-current, short-circuit, and thermal shutdown protection features protect the regulator and the connected load from potential damage.
• Reduced Power Consumption: The enable/disable control feature allows for turning off the regulator when not in use, further minimizing power consumption.
• Simplified Design: The integrated protection features and compact package simplify the design and layout of power supply circuits.

Additional Details

The RT9191-36CB typically operates with an input voltage range of 2.5V to 6V and provides a fixed output voltage of 3.6V. The output current capability typically ranges from 300mA to 500mA, depending on the specific model. The regulator is available in a small surface-mount package like SOT-23 or DFN, making it suitable for high-density circuit board layouts. Please refer to the specific datasheet for detailed electrical characteristics and application information.