MICROCHIP MIC5295YD: A 200mA Low-Noise LDO Voltage Regulator for Precision Applications

In the realm of modern electronics, achieving clean and stable power is paramount, especially for noise-sensitive components like RF transceivers, precision sensors, and audio circuits. The MICROCHIP MIC5295YD stands out as a superior solution, a 200mA low-dropout (LDO) voltage regulator engineered specifically to deliver exceptionally quiet and reliable power.

The core strength of the MIC5295YD lies in its ultra-low-noise performance. Utilizing an architecture that minimizes internal noise generation, it typically produces only 40µV of output noise over a 10Hz to 100kHz bandwidth. This exceptional characteristic is crucial for powering sensitive analog circuitry where even minor power supply fluctuations can degrade signal integrity and overall system performance. Furthermore, it boasts an impressive high power supply rejection ratio (PSRR), maintaining over 60dB at 1kHz. This enables the regulator to effectively filter out ripples and noise originating from the upstream power source, such as a switching regulator, ensuring a pristine output voltage.

Despite its compact package, the MIC5295YD delivers a robust 200mA of continuous output current with a minimal dropout voltage of typically 210mV at full load. This high efficiency in voltage conversion helps in reducing power loss and thermal stress, making it suitable for battery-operated and space-constrained portable devices. The device is designed for a wide input voltage range from 2.7V to 16V, offering flexibility in various applications. It also incorporates key protection features like current limiting and thermal shutdown, safeguarding both the regulator and the load under fault conditions. Available in fixed output voltage versions, its simple design requires only two external capacitors for operation, simplifying board layout and reducing the overall bill of materials.

ICGOOODFIND: The Microchip MIC5295YD is an exemplary LDO regulator that masterfully combines ultra-low noise, high PSRR, and robust 200mA output current in a simple, compact form factor. It is an ideal, industry-proven choice for designers seeking to enhance the performance and reliability of their noise-sensitive analog and mixed-signal systems.

Keywords: Low-Noise LDO, Voltage Regulator, High PSRR, 200mA Output Current, Thermal Shutdown.