The RT9166A-45CXL is a low-dropout (LDO) linear regulator from Richtek USA Inc. This regulator is designed to provide a stable and accurate output voltage with low noise and high efficiency. It is ideal for battery-powered devices and other applications where minimizing power consumption and noise are critical. It offers excellent transient response and over-current protection.

Applications

• Portable devices
• Battery-powered systems
• Post-regulation for switching regulators
• Noise-sensitive circuits
• Microcontroller power supplies

Features

• Low Dropout Voltage: Operates with a very small difference between input and output voltage.
• 4.5V Output Voltage: Provides a fixed 4.5V output.
• Low Quiescent Current: Minimizes power consumption when the regulator is not actively supplying current.
• Over-Current Protection: Protects the regulator and load from over-current conditions.
• Thermal Shutdown: Prevents damage from overheating.

Benefits

• Increased Efficiency: Low dropout voltage and quiescent current improve energy efficiency.
• Stable Output: Provides a stable and accurate output voltage under varying load conditions.
• Reduced Noise: Low noise operation is ideal for sensitive circuits.
• Robust Protection: Over-current and thermal shutdown features ensure reliable operation.
• Longer Battery Life: Low power consumption extends battery life in portable devices.

Additional Details

The RT9166A-45CXL is available in a small surface mount package. It features excellent transient response, making it suitable for applications with dynamic load changes. It is also RoHS compliant. This LDO regulator provides a reliable and efficient solution for providing a stable 4.5V supply in a variety of electronic devices, especially those with stringent power and noise requirements.