Microchip Fixed LDO Voltage Regulator 3.3V 150mA SOT-23-5

The Microchip Fixed LDO Voltage Regulator is a high-accuracy CMOS linear regulator designed specifically for battery-operated systems. Its advanced CMOS construction eliminates wasted ground current, significantly extending battery life compared to traditional bipolar regulators. The total supply current is typically 50µA at full load, making it highly efficient for portable applications.

Key features of this device include ultra-low-noise operation, fast response to step changes in load, and a very low-dropout voltage of typically 270mV at full load. It incorporates both over-temperature and over-current protection, ensuring robust performance and safeguarding your circuitry. Furthermore, the device is stable with an output capacitor of only 1µF, facilitating compact board designs.

This LDO regulator includes a power-saving shutdown mode; when the shutdown input is low, the supply current is reduced to 0.5µA (maximum) and the output voltage falls to zero. It also offers a ±0.5% high output voltage accuracy (typical) and features a reference bypass input for ultra-low-noise operation. Pin-compatible upgrades for bipolar regulators are supported.

With an input voltage range of 2.7V to 6V, it delivers a fixed 3.3V positive output at a maximum current of 150mA. Housed in a compact 5-pin SOT-23 surface-mount package, it operates reliably in temperatures ranging from -40°C to 125°C. The product dimensions are 43 mm in height, 33 mm in width, and 15 mm in depth, with a lightweight profile of just 0.033 grams.