High-Performance 3V Voltage Regulation with the Microchip MIC5317-3YM5 LDO

In the realm of modern electronics, achieving clean and stable power is a fundamental requirement for the reliable operation of sensitive circuits. The Microchip MIC5317-3YM5 stands out as a premier solution for applications demanding high-performance 3.0V voltage regulation. This ultra-low dropout (LDO) linear regulator is engineered to deliver exceptional power quality, efficiency, and integration in a remarkably compact package.

The core strength of the MIC5317-3YM5 lies in its ability to provide a precise and stable 3.0V output from an input voltage range of 2.5V to 5.5V. Its ultra-low dropout voltage—typically a mere 120mV at 150mA—is a critical feature, enabling continued regulation even as the input voltage dips very close to the output level. This maximizes battery life in portable devices by allowing the system to operate until the battery is nearly depleted. Furthermore, the device exhibits an impressively low quiescent current of just 40µA, which drastically reduces power consumption during light-load and standby modes, a vital characteristic for always-on and battery-powered applications.

Beyond basic regulation, the MIC5317-3YM5 is designed for superior power supply rejection ratio (PSRR). It effectively attenuates ripple and noise from the input source, ensuring a clean DC output that is immune to disturbances that could interfere with the performance of noise-sensitive components like RF transceivers, precision sensors, and audio codecs. This makes it an ideal choice for the power-sensitive analog and digital sections of a design.

Integration and reliability are also key benefits. The device incorporates crucial protection features such as internal current limiting and thermal shutdown, safeguarding both the regulator and the load under fault conditions. Housed in a space-saving 1.0mm x 1.0mm 4-pin WDFN package, it offers a high-performance power management solution with a minimal PCB footprint.

ICGOODFIND: The Microchip MIC5317-3YM5 is an exceptional LDO regulator that combines ultra-low dropout, low noise, and high PSRR in a miniature package. It is the optimal choice for designers seeking a reliable, high-performance 3V power rail for a wide array of portable and noise-sensitive electronic products.

Keywords: LDO Regulator, Low Dropout Voltage, Low Quiescent Current, Power Supply Rejection Ratio (PSRR), Voltage Regulation