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SOT23封装、低功耗微处理器监控电路,带有备用电池控制器和片选控制

业内唯一的SOT23 µP监控电路,带有电池备份切换和片选控制

产品详情

主要特征

应用/用途

Parametric specs for Battery Backup Circuits
Reset Thresh. (V) 1.2 to 1.8
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
Reset Out Active High
Open Drain
ICC (µA) (max) 50
Oper. Temp. (°C) -40 to +85
Package/Pins See Data Sheet
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参量

Parametric specs for Battery Backup Circuits
Reset Thresh. (V) 1.2 to 1.8
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
Reset Out Active High
Open Drain
ICC (µA) (max) 50
Oper. Temp. (°C) -40 to +85
Package/Pins See Data Sheet

主要特征

  • Low +1.2V Operating Supply Voltage (VCC or VBATT)
  • Precision Monitoring of +5.0, +3.3V, +3.0V, and +2.5V Power-Supply Voltages
  • On-Board Gating of Chip-Enable Signals, 1.5ns Propagation Delay
  • Debounced Manual Reset Input (MAX6365)
  • Watchdog Timer, 1.6s Timeout (MAX6366)
  • Battery-On Output Indicator (MAX6367)
  • Auxiliary User-Adjustable RESET IN (MAX6368)
  • Low 10µA Quiescent Supply Current
  • Three Available Output Structures
    • Push-Pull Active-Low RESET
    • Open-Drain Active-Low RESET
    • Open-Drain RESET
  • RESET/Active-Low RESET Valid Down to 1.2V Guaranteed
    • (VCC or VBATT)
  • Power-Supply Transient Immunity
  • 150ms min Reset Timeout Period
  • Miniature 8-Pin SOT23 Package

应用/用途

  • 计算机:台式机、工作站和服务器
  • 笔记本电脑
  • 掌上电脑
  • 笔输入掌上电脑
  • 便携式患者监视/药物传递
  • 便携式测试仪
  • POS终端
  • 打印机与传真机
  • 可编程逻辑控制器

描述

The MAX6365–MAX6368 supervisory circuits simplify power-supply monitoring, battery-backup control functions, and memory write protection in microprocessor (µP) systems. The circuits significantly improve the size, accuracy, and reliability of modern systems with an ultra-small integrated solution.

These devices perform four basic system functions:
  1. Provide a µP reset output during VCC supply power-up, power-down, and brownout conditions.
  2. Internally control VCC to backup-battery switching to maintain data or low-power operation for CMOS RAM, CMOS µPs, real-time clocks, and other digital logic when the main supply fails.
  3. Provide memory write protection through internal chip-enable gating during supply or processor faults.
  4. Include one of the following options: a manual reset input (MAX6365), a watchdog timer function (MAX6366), a battery-on output (MAX6367), or an auxiliary user-adjustable reset input (MAX6368).
The MAX6365–MAX6368 operate from VCC supply voltages as low as 1.2V. The factory preset reset threshold voltages range from 2.32V to 4.63V (see Ordering Information in the full data sheet). In addition, each part is offered in three reset output versions: push-pull active low, open-drain active low, or open-drain active high (see Selector Guide in the full data sheet). The MAX6365–MAX6368 are available in miniature 8-pin SOT23 packages.

简化框图

MAX6365、MAX6366、MAX6367、MAX6368:典型工作电路 MAX6365、MAX6366、MAX6367、MAX6368:典型工作电路 Zoom icon

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