Microchip MCP1703T-2802E/CB: A High-Efficiency 280mA LDO Voltage Regulator for Power-Sensitive Applications

In the world of low-dropout (LDO) voltage regulators, efficiency and stability are paramount. The Microchip MCP1703T-2802E/CB stands out as a robust solution designed specifically for battery-powered and always-on applications where every microamp of current counts. This regulator delivers a fixed 2.8V output from an input voltage range of 2.7V to 16V, making it exceptionally versatile for a wide array of electronic systems.

A defining characteristic of the MCP1703T-2802E/CB is its remarkably low quiescent current, which is typically just 1.6 µA. This ultra-low self-consumption makes it an ideal choice for devices that demand long battery life, such as wireless sensors, IoT nodes, smartwatches, and other portable electronics. By minimizing the current drawn when the load is idle, it significantly extends the operational time of the end product.

Despite its miniature SOT-23 package, this LDO is capable of providing a substantial output current of up to 280mA. It achieves this with a very low dropout voltage—typically 178 mV at 80 mA load—ensuring stable operation even as the input voltage approaches the output level. This is crucial for maintaining performance as a battery discharges towards its end-of-life voltage.

The device incorporates key protection features for enhanced reliability, including internal current limit and thermal shutdown, safeguarding both the regulator and the downstream circuitry under fault conditions. Furthermore, its stable operation with ceramic output capacitors reduces the bill of materials and saves valuable board space.

ICGOOODFIND: The Microchip MCP1703T-2802E/CB is an exceptional LDO voltage regulator that masterfully balances performance and power efficiency. Its combination of ultra-low quiescent current, respectable output current capability, and a wide input voltage range establishes it as a superior component for power management in modern, energy-conscious designs.

Keywords:

Low Quiescent Current

LDO Voltage Regulator

280mA Output Current

Battery-Powered Applications

Thermal Shutdown Protection