MICROCHIP MCP1824ST-3302E/DB 3.3V LDO Voltage Regulator 300mA SOT-223

The MICROCHIP MCP1824ST-3302E/DB is a fixed, low dropout (LDO) voltage regulator designed for modern, high-demand electronics. Operating from an input voltage range of 2.1V to 6V, it provides a stable 3.3V output capable of delivering up to 300mA of current. This makes it an excellent choice for applications requiring sub-1.8V output voltages with substantial current draw.

A key feature is its remarkably low quiescent current, typically just 120µA across the entire input voltage range. This ultra-low power consumption makes it particularly attractive for battery-powered and portable computing devices, helping to extend operational life. The regulator is constructed using CMOS technology and is stable with just a small 1.0µF ceramic output capacitor, which reduces overall solution size, cost, and output noise.

Reliability and Protection

Engineered for robustness, the MCP1824 includes integrated short-circuit current limiting and over-temperature protection to safeguard both the regulator and your circuit under fault conditions. It also offers a fast response to load transients, ensuring stable performance even with rapidly changing power demands. The typical output voltage tolerance is a precise 0.4%, guaranteeing reliable and accurate power delivery.

Housed in a compact, surface-mount SOT-223-3 package, this 3-pin fixed-voltage regulator is designed for efficient PCB space utilisation. Its low dropout voltage of 200mV (typical) allows it to continue regulating effectively even when the input voltage is very close to the desired output level, maximising efficiency in low-voltage systems.

Primary Applications

This component is ideally suited for power regulation in computers, computer peripherals, industrial control systems, communications networking equipment, and automotive electronics. Please note: this is an ESD-sensitive device, so proper handling precautions should be taken during its’