The LTC1983ES6-5#TRMPBF is a switching voltage regulator charge pump manufactured by Analog Devices. This device features a 100mA current output capacity, an ultra-low quiescent current of safe-mode operation (1µA max at 3V input voltage), an adjustable 2.7V/5V output voltage, and a 0.4V to 3.6V input voltage range. It is housed in a ThinSOT package and is designed for applications such as LED current-setting, optical networking, and smart meters. The LTC1983ES6-5#TRMPBF is an inverting charge pump, which means that the output is 180° out-of-phase with the input voltage. It features wide range frequency control, adjustable output voltage, and programmable current limit. This device relies on complete power-up/power down control with low shutdown current, reverse-current protection, and short-circuit current-limit protection.