MCP1799T-5002H/TT: Powering Precision in Demanding Applications

In the realm of power management, stability and cleanliness of the voltage supply are paramount. The MCP1799T-5002H/TT from Microchip Technology stands out as a robust solution, engineered to deliver exceptional performance in high-voltage environments where noise sensitivity is a critical concern. This 500 mA high-voltage, high-PSRR low-dropout linear regulator (LDO) is designed to provide a stable and precise 5.0V output from input voltages as high as 45V.

A defining characteristic of this LDO is its remarkably high Power Supply Rejection Ratio (PSRR), which exceeds 60 dB at 1 kHz. This exceptional noise suppression capability ensures that ripple and transient noise from the input source, such as from a noisy switched-mode power supply (SMPS), are effectively attenuated. This results in an exceptionally clean output voltage, which is absolutely vital for powering sensitive analog and RF circuits, sensors, and precision measurement equipment where even minor fluctuations can degrade performance.

Furthermore, the device maintains its regulation with a very low dropout voltage—typically 450 mV at the full 500 mA load. This efficiency in headroom management allows it to continue operating reliably even as the input voltage dips close to the output level, maximizing usable power and extending operational range. Its high input voltage capability makes it an ideal choice for 24V industrial systems, automotive applications, and telecommunications infrastructure, where voltage spikes and wide input variations are common.

The MCP1799T-5002H/TT also incorporates key protection features for enhanced system reliability, including internal current limiting and thermal shutdown, safeguarding both the regulator and the load under fault conditions. Housed in a space-efficient TO-263-3 package, it offers an excellent balance of power handling and thermal performance.

ICGOOODFIND: The MCP1799T-5002H/TT is a superior choice for designers seeking a reliable, high-performance LDO that excels in noisy, high-voltage environments, offering a rare combination of high current delivery, outstanding PSRR, and robust protection.

Keywords: High-PSRR, High-Voltage LDO, 500 mA, Low-Dropout Voltage, Noise Suppression.