回到顶部

4引脚、低功耗微处理器复位电路,带有手动复位

产品详情

主要特征

Parametric specs for Supervisors (1 Monitored Voltage)
Reset Thresh. (V) 2.5 to 3.3
3.3 to 5.5
Reset Out Active Low
Open Drain
tRESET (min) 1ms to 15ms
15ms to 85ms
85ms to 300ms
Watchdog Feature No Watchdog
Supervisor Features Manual Reset
ICC (µA) (max) 12
Package/Pins SOT23/4
Budgetary
Price (See Notes)
1.59
缩小

简化框图

Technical Docs

支持和培训

在Maxim的知识库中搜索技术问题的答案

过滤搜索

Maxim的专业工程师团队也会为您解答相应的技术问题,请访问Maxim的 支持中心

参量

Parametric specs for Supervisors (1 Monitored Voltage)
Reset Thresh. (V) 2.5 to 3.3
3.3 to 5.5
Reset Out Active Low
Open Drain
tRESET (min) 1ms to 15ms
15ms to 85ms
85ms to 300ms
Watchdog Feature No Watchdog
Supervisor Features Manual Reset
ICC (µA) (max) 12
Package/Pins SOT23/4
Budgetary
Price (See Notes)
1.59

主要特征

  • 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/用途

  • 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

描述

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.

简化框图

MAX6803、MAX6804、MAX6805:典型工作电路 MAX6803、MAX6804、MAX6805:典型工作电路 Zoom icon

Technical Docs

支持和培训

在Maxim的知识库中搜索技术问题的答案

过滤搜索

Maxim的专业工程师团队也会为您解答相应的技术问题,请访问Maxim的 支持中心