MIC5219-3.3YM5-TR: 150mA Low-Dropout Voltage Regulator for Stable 3.3V Output

In the world of electronic design, achieving a stable and clean power supply is fundamental. The MIC5219-3.3YM5-TR from Microchip Technology stands out as a premier solution for applications requiring a reliable 3.3V output. This low-dropout (LDO) voltage regulator is engineered to deliver up to 150mA of continuous output current with exceptional performance and minimal external components.

The core strength of the MIC5219-3.3YM5 lies in its extremely low dropout voltage. This characteristic ensures that the regulator continues to provide a stable 3.3V output even as the input voltage dips to a level very close to the output voltage, making it exceptionally efficient for battery-powered devices where conserving every last bit of energy is paramount. Furthermore, it boasts an impressively low ground current, which minimizes power loss and further extends battery life.

Beyond efficiency, this LDO is designed for stability. It requires only a small, 1.0µF ceramic output capacitor to remain stable, reducing both the board space and the bill of materials cost. Its internal protection features, including current limiting and thermal shutdown, safeguard both the regulator and the sensitive downstream components from damage during fault conditions. The device is offered in the space-saving SOT-23-5 (YM5) package, ideal for compact PCB designs.

Typical applications are vast, including:

Powering microcontrollers (MCUs) and sensors in portable equipment.

Providing clean noise-free voltage to RF modules and analog circuits.

Serving as a secondary, always-on power rail in complex systems.

ICGOOODFIND: The MIC5219-3.3YM5-TR is an exceptional choice for designers seeking a high-performance, low-noise, and efficient voltage regulation solution in a miniature package. Its robust feature set, focused on stability and protection, makes it a versatile and reliable component for a wide array of 3.3V applications.

Keywords: Low-Dropout (LDO) Regulator, 3.3V Output, 150mA, Low Ground Current, Thermal Shutdown.