Power Supply Control Solutions...at the Touch of a Button

摘要

Portable devices need to draw minimal current when off - ideally zero - to maximize battery life. Implementing pushbutton on/off control disconnects everything from the battery except the push-button control circuitry. Providing graceful power-up and power-down with minimal board space and minimal current draw is challenging, particularly when higher voltage battery packs are used. Linear Technology addresses the push-button interface challenge with a pair of tiny controllers.