MCP1703T-5002E/MB 500mA Low-Dropout (LDO) Voltage Regulator Technical Overview
The MCP1703T-5002E/MB is a robust 500mA low-dropout (LDO) voltage regulator from Microchip Technology, designed to deliver a fixed 5.0V output from an input voltage range of 2.7V to 16V. This device is engineered for applications requiring a compact, efficient, and highly reliable voltage regulation solution with minimal external components.
A key feature of this LDO is its exceptionally low quiescent current, typically just 2.0 µA during full load operation. This makes it exceptionally suitable for battery-powered applications where extending operational life is paramount. Despite its low power consumption, it maintains a low dropout voltage of only 178 mV at 500 mA, ensuring stable output even as the input voltage approaches the output level, thereby maximizing the usable energy from a discharging battery.
The MCP1703 family is renowned for its stability, capable of operating with a small, space-saving 1.0 µF ceramic output capacitor. This significantly reduces the overall solution size and cost. The device incorporates multiple protection features, including current limit and thermal shutdown, safeguarding both the regulator and the downstream load under fault conditions. Its low noise output performance is ideal for powering analog sensors and noise-sensitive circuitry.
Housed in a SOT-89-3 package, the MCP1703T-5002E/MB offers a high power-density solution. It is extensively used in consumer electronics, battery-powered devices, IoT modules, and as a point-of-load regulator for 5V microcontrollers and sensors.
ICGOOODFIND: The MCP1703T-5002E/MB stands out as a superior choice for designers seeking an optimal balance of very low quiescent current, a wide input voltage range, and robust performance in a miniature package, making it a cornerstone component for modern portable and power-sensitive designs.
Keywords: Low Quiescent Current, Low Dropout Voltage, 500mA LDO Regulator, Battery-Powered Applications, Thermal Shutdown Protection.
