The RT9172-25CM is a high-performance, low-dropout (LDO) voltage regulator manufactured by Richtek USA Inc. It delivers a stable 2.5V output voltage and is characterized by low dropout voltage, high output accuracy, and good transient response. The RT9172-25CM is suitable for various applications that require a regulated 2.5V supply.

Applications

• Portable Electronics: Powering core logic, memory, and interfaces in devices like smartphones, MP3 players, and handheld gaming consoles.
• Wireless Modules: Providing a clean and stable power supply for RF transceivers, Bluetooth modules, and Wi-Fi chipsets.
• Battery-Powered Devices: Regulating voltage for sensors, microcontrollers, and other peripherals in battery-operated equipment, ensuring consistent performance as the battery discharges.
• Industrial Equipment: Supplying power to analog and digital circuits in industrial control systems and automation equipment.
• Consumer Electronics: Powering various components in set-top boxes, DVD players, and other consumer devices.

Features

• Low Dropout Voltage: Maintains a stable output voltage even when the input voltage is close to the desired output.
• High Output Accuracy: Provides a precise 2.5V output voltage, minimizing variations and ensuring consistent performance.
• Excellent Transient Response: Quickly responds to load changes, maintaining a stable output voltage even under dynamic conditions.
• Overcurrent Protection: Protects the regulator and the load from damage due to excessive current draw.
• Thermal Shutdown: Prevents the device from overheating and causing damage by shutting down the output when the junction temperature exceeds a safe limit.
• Enable/Disable Control: Allows the regulator to be turned on or off via an external signal, reducing power consumption during idle periods.
• Fixed Output Voltage: Simplifies design and eliminates the need for external voltage setting components.

Benefits

• Improved System Stability: Provides a clean and stable power supply, minimizing noise and ripple, which can improve system performance.
• Extended Battery Life: Efficient operation and low quiescent current contribute to longer battery life in portable applications.
• Enhanced System Reliability: Overcurrent protection and thermal shutdown features protect the device and the load from damage, increasing overall system reliability.
• Simplified Design: Fixed output voltage and minimal external components reduce design complexity and BOM cost.
• Reduced Power Consumption: Enable/disable control allows for power savings during idle periods, further extending battery life.

Additional Details

The RT9172-25CM is available in a small surface-mount package. Typical specifications include an input voltage range of 2.5V to 5.5V, a dropout voltage of typically 200mV at a specific current, and a maximum output current of 300mA. It's essential to consult the product datasheet for precise specifications and operating conditions.