The RT9166A-12PXL is a low dropout (LDO) voltage regulator from Richtek USA Inc., designed to deliver a stable and accurate 1.2V output voltage. This regulator is particularly well-suited for powering sensitive digital circuits and memory components in portable and battery-powered devices, where efficiency and space are paramount. Key features include low quiescent current, high output accuracy, and excellent transient response, which contribute to overall power efficiency and reliable system operation.

Applications

• Microcontroller Core Voltage: Provides a stable 1.2V supply for the core of low-power microcontrollers.
• Memory Power Supply: Powers low-voltage memory devices, such as DDR and LPDDR SDRAM.
• FPGA Core Voltage: Provides a regulated 1.2V supply for the core voltage of FPGAs.
• Portable Electronics: Regulates voltage in smartphones, tablets, and other handheld devices.
• Embedded Systems: Supplies a stable voltage to various components in embedded systems.

Features

• Low Dropout Voltage: Operates efficiently even when the input voltage is close to the output voltage.
• High Output Accuracy: Delivers a precise and stable 1.2V output.
• Low Quiescent Current: Minimizes power consumption in standby mode, extending battery life.
• 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.
• Thermal Shutdown: Prevents damage 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 extend the operating time of battery-powered devices.
• Reliable Performance: Built-in protection features ensure robust and dependable operation.
• Stable Power Supply: Provides a consistent and accurate voltage supply for sensitive electronic components.
• Simplified Design: Stable operation with ceramic capacitors reduces the need for external components and simplifies circuit design.
• Compact Footprint: Small package size enables integration into space-constrained applications.

Additional Details

The RT9166A-12PXL is typically available in a small surface-mount package. It is designed to operate over a wide range of input voltages and is stable with ceramic output capacitors, resulting in a compact and cost-effective solution. The thermal shutdown feature protects the device from potential damage due to overheating, while the current limiting function safeguards against overload conditions. Its low dropout voltage enables efficient operation even when the input voltage is close to the desired output voltage. Consult the product datasheet for specific package dimensions, operating temperature range, and other critical specifications.