High-Voltage Input LDO Regulator: Microchip MCP1792-5002H/DB 500mA with Short-Circuit Protection

In power management applications where a stable, clean, and low-noise voltage rail is required from a significantly higher input source, High-Voltage Low-Dropout (LDO) regulators are the ideal solution. The Microchip MCP1792-5002H/DB stands out in this category, engineered to deliver a fixed 5V output at up to 500mA from input voltages as high as 42V. This combination of high input voltage tolerance and substantial current delivery makes it exceptionally suited for a wide range of industrial, automotive, and telecommunications systems.

A key feature of this regulator is its robust integrated short-circuit protection. This circuitry actively monitors the output and instantly limits the current if a fault condition is detected, safeguarding both the regulator itself and the sensitive downstream components from potential damage due to accidental overloads or shorts. This built-in reliability is crucial for mission-critical applications where system longevity is paramount.

Beyond protection, the MCP1792 excels in performance. It maintains a low dropout voltage, typically 550mV at the full 500mA load, ensuring efficient regulation even when the input voltage dips close to the output level. Furthermore, it offers excellent line and load regulation, providing a stable output despite fluctuations in the input voltage or variations in the current drawn by the load. The device also includes essential features like thermal shutdown to prevent overheating and a enable/shutdown pin for power sequencing, adding further control to the design engineer's toolkit.

Housed in a space-efficient 8-pin DFN package, the MCP1792-5002H/DB provides a high level of integration in a minimal footprint. Its ability to operate over a wide -40°C to +125°C junction temperature range ensures reliable performance in even the most demanding environments.

ICGOODFIND: The Microchip MCP1792-5002H/DB is a superior high-voltage LDO regulator that delivers 500mA of continuous output current from inputs up to 42V. Its defining characteristics are its integrated short-circuit and thermal protection, which provide exceptional resilience and design security for robust 24V or 48V industrial and automotive power systems.

Keywords: High-Voltage LDO, Short-Circuit Protection, 500mA Output, 42V Input, Thermal Shutdown.