描述 Description

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:Provide a μP reset output during VCC supply power-up, power-down, and brownout conditions. 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.Provide memory write protection through internal chip-enable gating during supply or processor faults.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.

特性 Features

·Low +1.2V Operating Supply Voltage (VCC or VBATT)
·\tPrecision Monitoring of +5.0, +3.3V, +3.0V, and +2.5V Power-Supply Voltages
·\tOn-Board Gating of Chip-Enable Signals, 1.5ns Propagation Delay
·\tDebounced Manual Reset Input (MAX6365)
·\tWatchdog Timer, 1.6s Timeout (MAX6366)
·Battery-On Output Indicator (MAX6367)
·Auxiliary User-Adjustable RESET IN (MAX6368)
·\tLow 10μA Quiescent Supply Current
·\tThree Available Output Structures

· Push-Pull Active-Low RESET
· Open-Drain Active-Low RESET
· Open-Drain RESET

·\tRESET/Active-Low RESET Valid Down to 1.2V Guaranteed

·(VCC or VBATT)

·\tPower-Supply Transient Immunity
·\t150ms min Reset Timeout Period
·\tMiniature 8-Pin SOT23 Package

應用 Application

·計算機：臺式機、工作站和服務器
·筆記本電腦
·掌上電腦
·筆輸入掌上電腦
·便攜式患者監(jiān)視/藥物傳遞
·便攜式測試儀
·POS終端
·打印機與傳真機
·可編程邏輯控制器

簡介

MAX6367H屬于集成電路（IC）的監(jiān)控器。由制造生產(chǎn)的MAX6367H監(jiān)控器PMIC 監(jiān)控器用于監(jiān)視和/或控制電路中的電壓軌，能夠連接微控制器以維持一定的功率限值。監(jiān)控器類型包括電池備用電路、監(jiān)控器、多電壓監(jiān)控器、電源監(jiān)控器、穩(wěn)壓器/監(jiān)控器、復位計時器、定序器、簡單復位/上電復位、智能開/關控制器、系統(tǒng)管理器、電壓檢測器和看門狗電路。