摘要： 本应用指南介绍如何使用数字电位器生成使用 MAX1776 降压直流-直流转换器可调节电压供应。使用 DS3903 的参考设计显示功能产生 1.25 v 和 5.50V 与电位器之间的受规管的供应能力允许所需的电压水平的 1.8%内必须进行校正，供应。取决于当前的限制设置与 MAX1776 一起使用，设计是电流的有能力提供高达 600mA。Maxim > App Notes > DIGITAL POTENTIOMETERS POWER-SUPPLY CIRCUITS
Keywords: MAX1776, DS3903, digital pot, digipot, epot, dc-dc convertor, dc-dc conversion, dc-dc converters, Dec 10, 2002
digital potentiometers
APPLICATION NOTE 225
Using Digital Potentiometers in Adjustable Step-Down DC-DC
Converter Designs
Abstract: This application note describes how to use a digital potentiometer to generate an adjustable voltage
supply using a MAX1776 step-down DC-DC converter. A reference design using the DS3903 is shown that
features the ability to produce a regulated supply between 1.25V and 5.50V, and the potentiometer allows the
supply to be calibrated to within 1.8% of the desired voltage level. Depending on the current limit settings used
with the MAX1776, the design is capable of sup……
