MCP1700T-3302E: A 3.3V, 200mA Low-Quiescent Current LDO Voltage Regulator from Microchip

In the world of modern electronics, efficient power management is critical, especially for battery-powered and portable devices. The MCP1700T-3302E from Microchip Technology is a standout low-dropout (LDO) voltage regulator designed specifically to address these needs. This regulator delivers a fixed 3.3V output with a maximum output current of 200mA, making it an ideal choice for a wide range of applications.

One of the most significant features of the MCP1700T-3302E is its remarkably low quiescent current. At just 2.0 µA (typical), it ensures that very little power is consumed when the regulator is in a light-load or standby state. This characteristic is paramount for extending battery life in applications such as IoT sensors, wearable devices, and other always-on or frequently sleeping systems. The device also boasts a very low dropout voltage—as low as 178 mV at 80 mA load—allowing it to continue regulating the output voltage even when the input voltage is very close to 3.3V. This maximizes efficiency and is particularly useful as battery voltage decays over time.

Beyond its efficiency, the MCP1700T-3302E is engineered for robustness and stability. It requires only a 1.0 µF output capacitor for stability, simplifying the bill of materials and saving valuable board space. The regulator includes key protection features such as internal current limiting and thermal shutdown, safeguarding both the IC and the downstream circuitry from fault conditions. With an operating input voltage range from 2.7V to 13.2V, it offers considerable flexibility in various power scenarios.

Housed in a compact SOT-23-3 package, this LDO is perfectly suited for space-constrained designs. Its combination of ultra-low quiescent current, low dropout voltage, and essential protection mechanisms makes it a highly reliable and efficient power management solution.

ICGOOODFIND: The MCP1700T-3302E is an exceptional LDO regulator that excels in ultra-low power consumption, making it a top-tier choice for designers of power-sensitive portable and battery-operated devices who require a stable and efficient 3.3V rail.

Keywords: Low Quiescent Current, LDO Voltage Regulator, 3.3V Output, Battery-Powered Devices, Thermal Shutdown.