Maxim Power-Supply Tracker/Sequencer MAX6877 دليل المستخدم

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Maxim > App Notes > MICROPROCESSOR SUPERVISOR CIRCUITS
Keywords: sequencing, sequencer, monitor, reset, voltage tracking, voltage tracker Sep 20, 2006

APPLICATION NOTE 3918
User's Guide for the MAX6877 Power-Supply Tracker/Sequencer
Abstract: This application note is a step-by-step User's Guide for designing with the MAX6877 voltage tracker and
sequencer. The note explains how to make suitable component calculations.


Figure 1. The basic circuit for the MAX6877.
MAX6877 Overview

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To create a basic design with the MAX6877, such as the one in Figure 1, follow these steps: 1. Select the input voltage thresholds for IN1, IN2, and IN3. The input voltages must exceed these thresholds for power-up to begin. Use the following formula to set the resistor-divider values for IN1. (For IN2 or IN3, replace R with R , or R and R with R or R .) 1 3 5 2 4 6 2. Select the EN/active-low UV threshold using the following formula. EN/active-low UV can also be used as a logic

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