MAX6803数据手册集成电路（IC）的监控器规格书PDF

描述 Description

The MAX6803/MAX6804/MAX6805 microprocessor (µP) supervisory circuits monitor the power supplies in 2.85V to 5.0V µP and digital systems. They increase circuit reliability and reduce cost by eliminating external components and adjustments. They also feature a debounced manual reset input.
These devices perform a single function: they assert a reset signal whenever the VCC supply voltage declines below a preset threshold or whenever manual reset is asserted. Reset remains asserted for a preset timeout period after VCC has risen above the reset threshold or after manual reset is deasserted. The only difference among the three devices is their output. The MAX6804 (push/pull) and MAX6805 (open-drain) have an active-low RESET output, while the MAX6803 (push/pull) has an active-high RESET output. The MAX6803/MAX6804 are guaranteed to be in the correct state for VCC down to 0.7V. The MAX6805 is guaranteed to be in the correct state for VCC down to 1.0V.
The reset comparator in these ICs is designed to ignore fast transients on VCC. Reset thresholds are factory-trimmable between 2.63V and 4.80V, in approximately 100mV increments. These devices are available with a 1ms min, 20ms min, or 100ms min reset timeout period. Ideal for space-critical applications, the MAX6803/MAX6804/MAX6805 come packaged in a 4-pin SOT143. For a lower threshold voltage version, see the MAX6335/MAX6336/MAX6337.

特性 Features

• Ultra-Low 0.7V Operating Supply Voltage
• Low 4.0µA Supply Current
• Precision Monitoring of 2.85V to 5.0V Power-Supply Voltages
• Reset Thresholds Available from 2.63V to 4.80V, in Approximately 100mV Increments
• Debounced Manual Reset Input
• Fully Specified over Temperature
• Three Power-On Reset Timeout Periods Available (1ms min, 20ms min, 100ms min)
• Low Cost
• Three Available Output Structures: Push/Pull active-low RESET, Push/Pull RESET, Open-Drain active-low RESET
• Guaranteed RESET/active-low RESET Valid to VCC = 0.7V (MAX6803/MAX6804)
• Power-Supply Transient Immunity
• No External Components Required
• 4-Pin SOT143 Package
• Pin Compatible with MAX811/MAX812 and MAX6314/MAX6315

应用 Application

• 计算机：台式机、工作站和服务器
• 控制器
• 精确的µP与µC电源监控
• 智能仪表
• 便携式电池供电设备

简介

MAX6803属于集成电路（IC）的监控器。由制造生产的MAX6803监控器PMIC 监控器用于监视和/或控制电路中的电压轨，能够连接微控制器以维持一定的功率限值。监控器类型包括电池备用电路、监控器、多电压监控器、电源监控器、稳压器/监控器、复位计时器、定序器、简单复位/上电复位、智能开/关控制器、系统管理器、电压检测器和看门狗电路。