**LTC1728ES5-5#TRMPBF: A 5V, 150mA Micropower SOT-23 Voltage Regulator**

In the world of portable electronics and battery-powered devices, efficiency and space are paramount. The **LTC1728ES5-5#TRMPBF** from Analog Devices stands out as a critical component engineered to meet these exacting demands. This device is a **fixed 5V, low-dropout (LDO) linear voltage regulator** capable of delivering up to **150mA of continuous output current** while being housed in an ultra-compact SOT-23 package.

A defining characteristic of this regulator is its exceptionally **low quiescent current**, which is a mere 30µA during operation and drops to less than 1µA in shutdown mode. This **micropower operation** is instrumental in **maximizing battery life** in applications where every microamp counts. Furthermore, it features a low dropout voltage of typically 190mV at full load (150mA), ensuring stable regulation even as the input voltage approaches the output level, which is crucial for getting the most energy from a discharging battery.

The LTC1728ES5-5 is designed for robustness and simplicity. It requires only a small 1µF ceramic capacitor on the output for stability, reducing the total solution size and cost. Internal protection circuitry, including **current limiting and thermal shutdown**, safeguards both the regulator and the load under fault conditions. Its fixed 5V output makes it a simple, reliable choice for powering microcontrollers, sensors, and other logic circuits that require a clean, stable voltage rail from an unregulated input source ranging from 5.5V to 10V.

**ICGOODFIND**: The LTC1728ES5-5#TRMPBF is an exceptional solution for space-constrained, battery-sensitive designs, offering an optimal blend of low power consumption, miniaturized form factor, and reliable performance.

**Keywords**: Micropower, Low Dropout (LDO) Regulator, SOT-23, 150mA, Quiescent Current.