The RT9166A-12CXL is a low-dropout (LDO) voltage regulator manufactured by Richtek USA Inc. It is specifically designed to provide a stable and precise 1.2V output voltage. This regulator is well-suited for various applications, particularly in portable and battery-powered devices where efficient power management and a small footprint are crucial. Its key features include low quiescent current, high accuracy, and excellent transient response, which contribute to optimized power efficiency and reliable system performance.

Applications

• Core Voltage Regulation: Powers microcontrollers, processors, and digital signal processors (DSPs) requiring a 1.2V core voltage.
• Memory Power: Provides a stable 1.2V supply for low-voltage memory devices like DDR memory.
• Portable Devices: Regulates voltage in smartphones, tablets, and other handheld electronic devices.
• Low-Power Microcontrollers: Supplies power to low-power microcontrollers in embedded systems.
• FPGA Power: Provides a stable voltage source for field-programmable gate arrays (FPGAs).

Features

• Low Dropout Voltage: Operates efficiently with a minimal voltage difference between the input and output.
• High Output Accuracy: Delivers a stable and precise 1.2V output.
• Low Quiescent Current: Minimizes power consumption when the regulator is not actively supplying current.
• Overcurrent Protection: Protects the regulator and the load from excessive current draw.
• Short-Circuit Protection: Shuts down the regulator in the event of a short circuit to prevent damage.
• Thermal Shutdown Protection: Prevents overheating by shutting down the regulator when the junction temperature exceeds a safe limit.
• Stable with Ceramic Capacitors: Ensures stable operation with low-ESR ceramic output capacitors.

Benefits

• Extended Battery Life: Low quiescent current and high efficiency contribute to longer run times for battery-powered devices.
• Reliable Performance: Built-in protection features ensure robust and dependable operation.
• Stable Power Supply: High output accuracy and excellent transient response provide a consistent voltage supply for sensitive electronics.
• Simplified Design: Stable operation with ceramic capacitors reduces the need for external components.
• Compact Solution: Small package size allows for use in space-constrained applications.

Additional Details

The RT9166A-12CXL typically comes in a small surface-mount package. It is designed to operate over a wide input voltage range and is stable with ceramic output capacitors, making it a compact and cost-effective solution. The thermal shutdown feature protects the device from damage due to overheating, while the current limiting function prevents damage from overload conditions. Its low dropout voltage allows it to operate efficiently even when the input voltage is close to the output voltage. Refer to the product datasheet for specific package dimensions, operating temperature range, and other relevant specifications.