The MIC37501-1.8WR TR is a 500mA Low-Dropout (LDO) regulator from Micrel, now Microchip Technology. It's designed to provide a stable and accurate 1.8V output voltage with a low dropout voltage, making it suitable for applications where the input voltage is close to the output voltage. It features a high PSRR (Power Supply Rejection Ratio), ensuring a clean and stable output voltage even with noisy input power supplies.

Applications

• Portable Devices: Powering microcontrollers, memory chips, and other sensitive components in smartphones, tablets, and portable media players.
• Battery-Powered Equipment: Providing a stable voltage supply for devices like barcode scanners, handheld instruments, and wireless sensors.
• Post-Regulation: Cleaning up the output voltage from switching regulators to provide a very stable and low-noise supply.
• Microcontroller Power: Powering the core voltage of microcontrollers.
• Sensitive Analog Circuitry: Providing clean power to analog-to-digital converters (ADCs) and digital-to-analog converters (DACs).

Features

• Low Dropout Voltage: Operates with a very small difference between the input and output voltage.
• 500mA Output Current: Provides up to 500mA of output current.
• High PSRR: Rejects noise from the input power supply, ensuring a clean output voltage.
• Stable with Ceramic Capacitors: Stable with small ceramic output capacitors.
• Over-Current Protection: Protects the device from damage due to over-current conditions.
• Thermal Shutdown: Protects the device from overheating.
• Fixed Output Voltage: Provides a fixed 1.8V output voltage.

Benefits

• Stable and Accurate Output Voltage: Provides a stable and accurate output voltage, ensuring reliable operation of sensitive components.
• Low Noise: High PSRR rejects noise from the input power supply, resulting in a clean output voltage.
• Simple Design: Stable with ceramic capacitors, simplifying the design process.
• Robust Protection: Over-current protection and thermal shutdown ensure reliable operation and protect the device from damage.
• Efficient Operation: Low dropout voltage minimizes power losses, improving efficiency.

The MIC37501-1.8WR TR is available in a small package. It's ideal for powering noise-sensitive applications. Its fixed voltage and robust protection make it easy to use and reliable.