Microchip MCP1702T-2802E/MB: A 150mA Low Quiescent Current LDO Voltage Regulator for Power-Sensitive Designs

In the world of modern electronics, efficient power management is critical, especially for battery-powered and energy-conscious applications. The Microchip MCP1702T-2802E/MB stands out as a high-performance, low-dropout (LDO) voltage regulator designed to deliver clean and stable power with exceptional efficiency. This device provides a fixed 2.8V output with a maximum output current of 150mA, making it an ideal solution for a wide range of portable and low-power devices.

One of the most significant features of the MCP1702 is its remarkably low quiescent current, which is typically just 2.0 µA. This ultra-low current draw during operation is a game-changer for applications where extending battery life is paramount. Unlike traditional regulators that can waste a substantial amount of power simply by being on, the MCP1702 ensures that the vast majority of the battery's energy is dedicated to the application itself. This makes it perfectly suited for devices like IoT sensors, wearable electronics, medical devices, and always-on backup power circuits.

The regulator boasts a very low dropout voltage of only 178 mV at 150 mA load (typical), allowing it to continue regulating the output voltage even when the input voltage is very close to the desired output level. This capability is crucial for maximizing the usable energy from batteries, as it permits operation until the battery is nearly completely discharged.

Furthermore, the MCP1702T-2802E/MB offers excellent stability and performance. It requires only a small 1.0 µF ceramic output capacitor for stability, reducing both the solution size and bill-of-materials cost. Built-in protection features such as current limit and thermal shutdown safeguard both the regulator and the load from potential damage under fault conditions. Housed in a compact SOT-89-3 package, it is designed for space-constrained PCB layouts.

ICGOOODFIND: The Microchip MCP1702T-2802E/MB is an exceptional LDO regulator that masterfully balances performance, size, and ultra-low power consumption. Its incredibly low quiescent current and low dropout voltage make it a superior choice for designers aiming to achieve maximum runtime and efficiency in battery-dependent products.

Keywords:

Low Quiescent Current

LDO Voltage Regulator

150mA Output Current

Battery-Powered Applications

Thermal Shutdown