MCP1703AT-1802E/CB: 150mA Low-Quiescent Current LDO Voltage Regulator

In the realm of power management for modern electronic devices, efficiency and stability are paramount. The MCP1703AT-1802E/CB from Microchip Technology stands out as a high-performance 150mA low-dropout (LDO) voltage regulator engineered to meet the stringent demands of battery-powered and space-constrained applications. This regulator delivers a fixed 1.8V output with exceptional accuracy and minimal power dissipation, making it an ideal choice for a wide range of embedded systems, IoT modules, and portable consumer electronics.

A defining characteristic of the MCP1703 is its remarkably low quiescent current, which is typically just 2.0 µA. This ultra-low current draw is crucial for extending battery life in applications that spend significant time in standby or sleep modes. Unlike traditional regulators that waste precious energy even when idle, the MCP1703 ensures that power is conserved, thereby maximizing operational uptime. Furthermore, it features a very low dropout voltage of only 178 mV at full 150mA load, enabling it to continue regulating effectively even when the input voltage dips very close to the output level. This is particularly valuable as battery voltage decays over time, allowing the system to function until the battery is nearly depleted.

The device is designed for robustness and simplicity. It requires only a small 1.0 µF ceramic output capacitor for stability, reducing the overall component count and board space. Built-in protection features such as current limit and thermal shutdown safeguard both the regulator and the load from damage under fault conditions. Housed in a compact SOT-23-3 package, the MCP1703AT-1802E/CB offers a reliable and compact power solution without compromising on performance.

ICGOOFind: The MCP1703AT-1802E/CB is an exceptional LDO regulator that excels in ultra-low quiescent current and low dropout voltage, making it a superior component for power-sensitive and battery-dependent designs where longevity and efficiency are critical.

Keywords: Low Quiescent Current, LDO Voltage Regulator, 150mA, Low Dropout Voltage, Thermal Shutdown