The Microchip MCP1700T-1802E/MB: A Compact Powerhouse for 150mA Applications

In the realm of modern electronics, efficient and stable voltage regulation is a cornerstone of reliable design. For applications where board space is at a premium and power efficiency is paramount, the Microchip MCP1700T-1802E/MB stands out as an exceptional solution. This 150mA low-dropout (LDO) voltage regulator combines a tiny footprint with impressive performance characteristics, making it an ideal choice for a vast array of portable and battery-powered devices.

Key Features and Performance Advantages

The core of the MCP1700T-1802E/MB's appeal lies in its remarkably low quiescent current. Drawing only 2.0 µA (typical) during operation, it places minimal demand on the power source, which is crucial for extending battery life in products like IoT sensors, wearable technology, and portable medical devices. This ultra-low current consumption ensures that power is dedicated to the application, not wasted on the regulation process itself.

Furthermore, this LDO exhibits an extremely low dropout voltage. With just 178 mV of dropout at the full 150 mA load (with a 3.3V output), the regulator can continue to provide a stable output even as the input voltage dips very close to the output level. This feature is invaluable for maximizing the usable energy from batteries, allowing them to operate until they are nearly completely discharged without sacrificing system performance.

The device is designed to deliver a fixed 1.8V output voltage with an accuracy of ±0.5%, providing a stable and precise power rail for microcontrollers, sensors, and other critical components. Additional built-in protection features, including current limit and thermal shutdown, safeguard both the regulator and the load against potential damage from fault conditions, enhancing the overall robustness of the end product. Housed in a space-saving SOT-89-3 package, it offers a power dissipation capability that belies its small size.

Typical Applications

The combination of its small form factor and high efficiency makes the MCP1700T-1802E/MB exceptionally versatile. It is perfectly suited for:

Battery-Powered IoT Devices (Wi-Fi, Bluetooth Modules)

Wearable Health and Fitness Monitors

Portable Consumer Electronics

Smart Meters and Portable Measurement Equipment

Backup Power for Real-Time Clocks (RTCs) and Memory

ICGOODFIND Summary: The Microchip MCP1700T-1802E/MB is a highly efficient 150mA LDO voltage regulator that excels in space-constrained, battery-sensitive applications. Its defining characteristics of ultra-low quiescent current and a very low dropout voltage work in concert to dramatically extend operational runtime, while its integrated protections ensure design reliability.

Keywords:

Low-Dropout (LDO) Regulator

Ultra-Low Quiescent Current

150mA Output Current

Battery-Powered Applications

Voltage Regulation