MIC2954-03WS-TR: A Precision 3.3V/150mA Low-Dropout Voltage Regulator with Integrated Error Flag

The MIC2954-03WS-TR is a robust and highly reliable low-dropout (LDO) voltage regulator designed to deliver a fixed 3.3V output at up to 150mA of current. Its key advantage lies in its exceptionally low dropout voltage, requiring only 350mV at full load to maintain regulation. This makes it exceptionally well-suited for battery-powered applications where every millivolt of available voltage must be utilized to maximize operational life.

A defining feature of this regulator is its integrated error flag output. This active-low signal provides a immediate digital warning when the output voltage falls out of regulation by approximately 5%. This critical functionality is essential for advanced systems requiring real-time monitoring of power rail integrity, allowing a microcontroller or system manager to initiate a safe shutdown or alert the user before a brownout condition leads to data corruption or system failure.

The device is engineered for stability and is capable of operating with very small, space-saving ceramic capacitors, enhancing its usability in modern compact designs. Furthermore, it includes vital built-in protection mechanisms such as current limiting and thermal shutdown, safeguarding both the regulator and the downstream circuitry from damage due to fault conditions.

Housed in a space-efficient SOT-223-3 package, the MIC2954-03WS-TR offers an excellent balance of performance, size, and diagnostic capability, making it an ideal choice for a wide range of applications, including portable instruments, embedded systems, smart sensors, and automotive subsystems.

ICGOOODFIND: The MIC2954-03WS-TR stands out as a superior power management solution by combining efficient 150mA low-dropout regulation with a critical error-flag feature, ensuring both performance and system reliability in demanding electronic designs.

Keywords: Low-Dropout Regulator, Error Flag, 3.3V Output, 150mA, Thermal Shutdown.