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MAX6339：四电压µP监控电路，SOT封装

业内尺寸最小的四电压复位IC

The MAX6339 is a precision quad voltage monitor with microprocessor (µP) supervisory reset timing. The device can monitor up to four system supply voltages without any external components and asserts a single reset if any supply voltage drops below its preset threshold. The device significantly reduces system size and component count while improving reliability compared to separate ICs or discrete components. A variety of factory-trimmed threshold voltages are available to accommodate different supply voltages and tolerances with minimal external component requirements. The selection includes internally fixed options for monitoring +5.0V, +3.3V, +3.0V, +2.5V, +1.8V, and -5.0V supplies with -5% and/or -10% tolerances. The device is also available with one or two user-adjustable threshold options if non-standard thresholds are desired (use external resistor-divider network). The quad monitor provides a single active-low reset output that is asserted when any monitored input is below its associated threshold. The output is open drain with a weak internal pullup (10µA) to IN2. Reset remains low for a reset timeout period (140ms min) after all voltages are above the selected thresholds. The output is valid as long as either the IN1 or IN2 input voltage remains > 1V. The MAX6339 is available in a small 6-pin SOT23 package and operates over the extended (-40°C to +85°C) temperature range.

关键特性 Monitors Four Power-Supply Voltages Precision Factory-Set Reset Threshold Options for +5.0V, +3.3V, +3.0, +2.5V, +1.8V, and -5.0V Supplies User-Adjustable Voltage Monitoring Threshold Options Low 55µA Supply Current Open-Drain active-low RESET Output with 10µA Internal Pullup 140ms (min) Reset Timeout Period Active-low RESET Valid to IN1 = 1V or IN2 = 1V Immune to Short Monitored Supply Transients No External Components Required Guaranteed from -40°C to +85°C Small 6-Pin SOT23 Package

MAX6339：典型工作电路 应用 计算机：台式机、工作站和服务器 数据存储设备 高端打印机 工业设备 网络设备 机顶盒 电信

数据手册DataSheet

关键参数

质量和环境数据

• MAX6339.pdf

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