MIC2954-02WS-TR: 5V, 150mA Low-Dropout Voltage Regulator with Error Flag

In the realm of power management for modern electronic systems, ensuring a stable and reliable voltage supply is paramount. The MIC2954-02WS-TR stands out as a robust low-dropout (LDO) voltage regulator designed to deliver a precise 5V output at currents up to 150mA. This device is particularly valued in applications where power efficiency and system monitoring are critical.

A key feature of this LDO is its remarkably low dropout voltage. At full load (150mA), the dropout voltage is typically only 60mV, and under lighter loads, it can be as low as 5mV. This exceptional efficiency allows the regulator to maintain a stable output even when the input voltage dips very close to the output level, maximizing battery life and ensuring operation in low-voltage conditions.

Beyond its regulation capabilities, the MIC2954-02WS-TR integrates a crucial error flag output. This feature provides a digital signal to the host microcontroller, warning of an impending output dropout. This occurs when the input voltage falls too low (approximately 5.2V) for the regulator to guarantee its specified 5V output. This early warning system allows for an orderly system shutdown or a swift switch to a backup power source, preventing data corruption and protecting sensitive circuitry from operating under out-of-spec conditions.

The device is also designed for robustness. It includes built-in protection against short circuits and over-temperature conditions, enhancing the reliability of the end product. Its low quiescent current makes it an excellent choice for power-sensitive, battery-operated devices.

Housed in a compact SOT-223-3 package, the MIC2954-02WS-TR offers a high power-density solution, making it suitable for a wide array of applications, including:

Battery-powered equipment and instrumentation

Microcontroller and microprocessor power supplies

Smart sensors and IoT devices

Portable medical devices

Automotive auxiliary systems

ICGOODFIND: The MIC2954-02WS-TR is an exceptional component that combines high efficiency with critical system monitoring. Its ultra-low dropout voltage and integrated error flag make it an ideal, intelligent choice for designers who prioritize power integrity and system reliability in space-constrained applications.

Keywords: Low-Dropout Voltage Regulator, Error Flag, 5V Output, 150mA, SOT-223-3 Package.