Microchip MCP1825S-3302E/DB 3.3V 500mA LDO Voltage Regulator, SOT-223

The Microchip MCP1825S-3302E/DB is a fixed-output, low dropout (LDO) linear voltage regulator presented in a compact 3-pin SOT-223 package. It is engineered to deliver high current at a low, stable output voltage, making it an excellent choice for modern applications requiring sub-1.8V outputs with significant power demands.

This regulator provides a 500mA output current capability, combined with an exceptionally low dropout voltage of just 210mV at full load, ensuring high efficiency and minimal power dissipation. Designed for stability with ceramic output capacitors, it inherently offers lower output noise while reducing the overall size and cost of the power management solution. A minimal 1µF of output capacitance is all that is required to stabilise the regulator.

Key Features & Protections

The MCP1825S-3302E/DB incorporates robust protection features including overtemperature shutdown and short-circuit current limiting, safeguarding the device and the wider system during fault conditions. It also provides a 'power good' output signal for enhanced system monitoring and control.

Performance Specifications

The regulator maintains a precise fixed output of 3.3V with a typical tolerance of 0.5% and features a wide input operating range from 2.1V to 6.0V. It exhibits a fast transient response to sudden load changes and operates with a low quiescent supply current of just 120µA, making it highly suitable for battery-powered and portable electronics. It is rated for a broad operating junction temperature range from -40°C to 125°C.

Applications

Ideal for a wide array of modern electronic designs, this LDO regulator is perfect for power management in portable devices, consumer electronics, and automotive applications where reliable, clean, and efficient voltage regulation is paramount.