The RT9166A-14CXL is a low dropout (LDO) voltage regulator manufactured by Richtek USA Inc. It is designed to provide a stable and accurate output voltage even when the input voltage fluctuates or the load current changes. This regulator is particularly well-suited for battery-powered applications and portable devices where efficiency and space are critical.

Applications

• Mobile Phones: Powering core circuitry and peripherals.
• PDAs and Smart Devices: Providing stable voltage rails for processors and memory.
• Wireless Devices: Ensuring consistent power for RF components.
• Portable Instruments: Regulating voltage for sensitive measurement equipment.
• Post Regulators for Switching Power: Filtering ripple and noise from switching power supplies.

Features

• Low Dropout Voltage: Operates with a minimal difference between input and output voltage, maximizing efficiency.
• High Output Accuracy: Maintains a precise output voltage, ensuring stable operation of connected devices.
• Low Quiescent Current: Consumes minimal power when not actively supplying current, extending battery life.
• Short-Circuit Protection: Protects the regulator and connected devices from damage due to short circuits.
• Over-Temperature Protection: Shuts down the regulator if the temperature exceeds safe limits, preventing overheating and damage.
• Enable/Disable Control: Allows the regulator to be turned on or off to conserve power when not needed.
• Small Package Size: Available in compact packages, suitable for space-constrained applications.

Benefits

• Extended Battery Life: Low quiescent current and low dropout voltage contribute to increased energy efficiency, prolonging battery life in portable devices.
• Stable and Reliable Power Supply: High output accuracy and robust protection features ensure a stable and reliable power supply for sensitive electronic components.
• Reduced System Cost: Integrated features such as short-circuit and over-temperature protection eliminate the need for external protection components.
• Simplified Design: Easy to use and requiring few external components, simplifying the design process.
• Improved System Performance: Clean and stable power supply minimizes noise and interference, improving the overall performance of the system.

Additional Details

The RT9166A-14CXL typically supports an output voltage of 1.4V. It is designed to operate over a wide input voltage range and is available in various package options to suit different application requirements. The regulator also incorporates thermal shutdown protection, which disables the output when the junction temperature exceeds a specified limit. This feature prevents damage to the regulator and surrounding components in the event of an overload or short circuit condition. The enable/disable control allows for efficient power management in battery-powered applications, reducing power consumption when the regulator is not needed.