MCP1700T-2802E/TT: A 280 mA Low-Quiescent Current LDO Voltage Regulator from Microchip

In the realm of power management for battery-operated and low-power devices, efficiency is paramount. The MCP1700T-2802E/TT from Microchip Technology stands out as a highly specialized Low Dropout (LDO) voltage regulator engineered to meet the stringent demands of modern portable electronics. This regulator is designed to deliver a fixed 2.8V output voltage at a maximum current of 280 mA, making it an ideal solution for a wide array of applications where power conservation is critical.

A defining characteristic of the MCP1700T-2802E/TT is its exceptionally low quiescent current (Iq). Under typical operating conditions, it draws a mere 1.6 µA, a feature that is absolutely crucial for extending battery life. This ultra-low self-consumption ensures that very little power is wasted when the connected load is in a standby or sleep mode, which is a common state for many IoT sensors, wearables, and other always-on devices. This allows for significantly longer operational periods between battery charges or replacements.

Despite its minimal power draw, the regulator does not compromise on performance. It boasts a very low dropout voltage—typically 178 mV at a 80 mA load—enabling it to continue regulating the output voltage effectively even when the input supply voltage dips very close to the output level. This is particularly valuable as a battery discharges and its voltage decays, ensuring stable system operation for as long as possible.

The device is offered in a space-saving SOT-23-3 package, which is perfectly suited for compact PCB designs. Furthermore, it incorporates key protection features such as internal current limit and thermal shutdown, safeguarding both the regulator itself and the downstream components from damage due to fault conditions. With an input voltage range from 2.7V to 16V, it offers flexibility for use with various battery chemistries, including multi-cell alkaline, NiMH, and even Li-Ion packs.

ICGOOODFIND: The MCP1700T-2802E/TT is a superior choice for designers prioritizing ultra-low power consumption and stability in space-constrained, battery-powered applications, offering an optimal blend of efficiency, protection, and miniaturization.

Keywords: Low Quiescent Current, LDO Voltage Regulator, 280 mA, Battery-Powered Devices, Thermal Shutdown.