MIC5216-3.3YM5: A High-Performance 3.3V LDO Regulator for Precision Power Management

The MIC5216-3.3YM5 is a robust 3.3V low-dropout (LDO) linear voltage regulator from Microchip Technology, designed to deliver a clean, stable, and precise power supply for a wide array of applications. Housed in a compact SOT-23-5 (YM5) package, this regulator is an ideal solution for space-constrained designs where board real estate is at a premium, such as in portable devices, IoT modules, and handheld instrumentation.

A key feature of this LDO is its remarkably low dropout voltage, typically 350mV at 150mA load. This allows the device to maintain a regulated 3.3V output even when the input voltage dips very close to the output level, significantly enhancing power efficiency and extending battery life in systems powered by batteries or noisy power rails. Furthermore, the MIC5216-3.3YM5 boasts an impressively low quiescent current, which minimizes the device's own power consumption when under light load conditions.

The regulator provides a fixed 3.3V output with an accuracy of ±2%, ensuring that sensitive components like microcontrollers, sensors, and communication ICs receive the precise voltage they require for reliable operation. It is capable of delivering up to 150mA of continuous output current, sufficient for powering multiple low-power ICs. For system stability, it only requires a small, low-ESR ceramic output capacitor, simplifying the bill of materials and reducing overall design complexity.

Additional built-in protection features are critical for robust system design. These include current limiting to safeguard the regulator and the load during fault conditions and thermal shutdown to prevent damage from excessive power dissipation. The MIC5216-3.3YM5 is engineered for excellent line and load transient response, making it exceptionally effective at filtering out noise from the input supply.

ICGOODFIND: The MIC5216-3.3YM5 stands out as an exceptionally reliable and efficient power management solution. Its combination of a low dropout voltage, low ground current, high output accuracy, and robust protection features in a miniature package makes it a superior choice for designers aiming to optimize performance and longevity in modern electronic applications.

Keywords: Low-Dropout (LDO), 3.3V Regulator, Low Quiescent Current, SOT-23-5, Thermal Shutdown