MAX6721：双/三路、超低电压、SOT23封装、微处理器监控电路

MAX6715-MAX6729是超低电压µP监控电路，用于监视二路或三路系统电源。当任一被监视电源电压跌至工厂预置或可调门限以下时，这些器件会触发系统复位，在所有电源电压上升至门限以上之后，复位信号仍将在最小超时周期内保持有效。与离散IC或分立元件相比，这些集成的二/三路监控电路可显著提高系统的稳定性、并减小系统尺寸。 这些器件监视1.8V至5.0V主电源(VCC1)和0.9V至3.3V次级电源(VCC2)，具有工厂预置的复位门限选项(参见完整数据资料中的Reset Voltage Threshold Suffix Guide)。外部可调RSTIN输入允许用户监视低至0.62V的第三路电源。VCC1或VCC2保持在0.8V以上时，这些器件确保正确的复位输出逻辑。 MAX6715-MAX6729提供多个具有看门狗输入的推挽式或漏极开路复位输出、手动复位输入以及电源失效输入/输出(参见完整数据资料中的Selector Guide)。1.1ms至1120ms (最小值)可选则的复位超时门限(参见完整数据资料中的Reset Timeout Period Suffix Guide)。MAX6715-MAX6729采用小尺寸5、6或8引脚SOT23封装，工作温度范围-40°C至+85°C。

关键特性
  • VCC1 (主电源电压)复位门限：1.58V至4.63V
  • VCC2 (副电源电压)复位门限：0.79V至3.08V
  • 外部可调RSTIN门限用于辅助电源/三路电源监视(0.62V内部基准)
  • 看门狗选项
    • 35s (最小值)长启动周期
    • 1.12s (最小值)正常超时周期
  • 手动复位输入选项
  • 电源失效输入/输出选项(推挽式和漏极开路低电平有效)
  • VCC1或VCC2低至0.8V时保证复位输出正常
  • 复位输出逻辑选项
  • 不受VCC瞬变影响
  • 3.6V供电时电源电流低至14µA (典型值)
  • 小尺寸5、6或8引脚SOT23封装
功能框图
MAX6715、MAX6716、MAX6717、MAX6718、MAX6719、MAX6720、MAX6721、MAX6722、MAX6723、MAX6724、MAX6725、MAX6726、MAX6727、MAX6728、MAX6729：典型工作电路
产品应用
  • 计算机/服务器
  • 工业设备
  • 多电压系统
  • 便携式电池供电设备
  • 打印机与传真机
  • 机顶盒
  • 电信/网络设备
关键参数
Part NumberInterfaceReset Thresh.
(V)		Reset OuttRESETWatchdog FeatureWatchdog TimeoutSupervisor FeaturesReset Thresh. Accur.
(%)		ICC
(µA)		Package/PinsBudgetary
Price
min@ +25°CmaxSee Notes
Part NumberInterfaceReset Thresh.
(V)		Reset OuttRESETWatchdog FeatureWatchdog TimeoutSupervisor FeaturesReset Thresh. Accur.
(%)		ICC
(µA)		Package/PinsBudgetary
Price
min@ +25°CmaxSee Notes
MAX6715Factory Fixed
0 to 1.2
1.2 to 1.8
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
Active Low
Open Drain
1ms to 15ms
15ms to 85ms
85ms to 300ms
300ms to 1s
>1s
No Watchdog-Manual Reset2.537
SOT/6
$3.21 @1k
MAX6716
Active Low
Push-Pull
No Watchdog-Manual Reset
SOT/6
$3.21 @1k
MAX6717
Active Low
Open Drain
No Watchdog-Manual Reset
SOT/5
$3.21 @1k
MAX6718
Active Low
Push-Pull
No Watchdog-Manual Reset
SOT/5
$3.21 @1k
MAX6721
Active Low
Open Drain
Extended Setup Period
Input (WDI)
1s to 2s
>2s
Manual Reset
SOT/6
$3.21 @1k
MAX6722
Active Low
Push-Pull
Extended Setup Period
Input (WDI)
1s to 2s
>2s
Manual Reset
SOT/6
$2.85 @1k
MAX6728
Active Low
Open Drain
Extended Setup Period
Input (WDI)
1s to 2s
>2s
Adjustable Reset Input
Manual Reset
Power Fail Comparator/Low Battery Detect
SOT/8
$3.21 @1k
MAX6729
Active Low
Push-Pull
Extended Setup Period
Input (WDI)
1s to 2s
>2s
Adjustable Reset Input
Manual Reset
Power Fail Comparator/Low Battery Detect
SOT/8
$3.21 @1k
MAX6719Factory Fixed
0 to 1.2
1.2 to 1.8
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
Active Low
Open Drain
1ms to 15ms
15ms to 85ms
85ms to 300ms
300ms to 1s
>1s
No Watchdog-
Adjustable Reset Input
Manual Reset
2.537
SOT/6
$3.21 @1k
MAX6720
Active Low
Push-Pull
No Watchdog-
Adjustable Reset Input
Manual Reset
SOT/6
MAX6723
Active Low
Open Drain
Extended Setup Period
Input (WDI)
1s to 2s
>2s
Adjustable Reset Input
SOT/6
MAX6724
Active Low
Push-Pull
Extended Setup Period
Input (WDI)
1s to 2s
>2s
Adjustable Reset Input
SOT/6
MAX6725
Active High
Active Low
Open Drain
Extended Setup Period
Input (WDI)
1s to 2s
>2s
Adjustable Reset Input
Manual Reset
SOT/8
MAX6726
Active High
Active Low
Push-Pull
Extended Setup Period
Input (WDI)
1s to 2s
>2s
Adjustable Reset Input
Manual Reset
SOT/8
MAX6727
Active Low
Open Drain
Extended Setup Period
Input (WDI)
1s to 2s
>2s
Adjustable Reset Input
Manual Reset
SOT/8
数据手册DataSheet
英文MAX6715-MAX6729.pdfRev 5; 03/2006
技术资料
订购型号
型号状况推荐替代产品封装温度RoHS/无铅
MAX6721UTLTD1-T停止供货SOT,；6引脚；9mm²-40°C至+85°CRoHS/无铅：否
MAX6721UTLTD2-T停止供货SOT,；6引脚；9mm²-40°C至+85°CRoHS/无铅：否
MAX6721UTLTD3+T生产中SOT,；6引脚；9mm²-40°C至+85°CRoHS/无铅：无铅
MAX6721UTLTD3-T停止供货MAX6721UTLTD3+TSOT,；6引脚；9mm²-40°C至+85°CRoHS/无铅：否
MAX6721UTLTD4-T停止供货SOT,；6引脚；9mm²-40°C至+85°CRoHS/无铅：否
MAX6721UTLTD5-T停止供货SOT,；6引脚；9mm²-40°C至+85°CRoHS/无铅：否
MAX6721UTLTD6-T停止供货SOT,；6引脚；9mm²-40°C至+85°CRoHS/无铅：否
MAX6721UTMRD1-T停止供货SOT,；6引脚；9mm²-40°C至+85°CRoHS/无铅：否
MAX6721UTMRD2-T停止供货SOT,；6引脚；9mm²-40°C至+85°CRoHS/无铅：否
MAX6721UTMRD3-T停止供货SOT,；6引脚；9mm²-40°C至+85°CRoHS/无铅：否
型号状况推荐替代产品封装：类型 引脚 占位面积封装图 编码/变更 *温度RoHS/无铅？
MAX6721UTMRD4-T停止供货SOT,；6引脚；9mm²-40°C至+85°CRoHS/无铅：否
MAX6721UTMRD5-T停止供货SOT,；6引脚；9mm²-40°C至+85°CRoHS/无铅：否
MAX6721UTMRD6-T停止供货SOT,；6引脚；9mm²-40°C至+85°CRoHS/无铅：否
MAX6721UTMSD1-T停止供货SOT,；6引脚；9mm²-40°C至+85°CRoHS/无铅：否
MAX6721UTMSD2-T停止供货SOT,；6引脚；9mm²-40°C至+85°CRoHS/无铅：否
MAX6721UTMSD3-T停止供货SOT,；6引脚；9mm²-40°C至+85°CRoHS/无铅：否
MAX6721UTMSD4-T停止供货SOT,；6引脚；9mm²-40°C至+85°CRoHS/无铅：否
MAX6721UTMSD5-T停止供货SOT,；6引脚；9mm²-40°C至+85°CRoHS/无铅：否
MAX6721UTMSD6-T停止供货SOT,；6引脚；9mm²-40°C至+85°CRoHS/无铅：否
MAX6721UTRDD1-T停止供货SOT,；6引脚；9mm²-40°C至+85°CRoHS/无铅：否
型号状况推荐替代产品封装：类型 引脚 占位面积封装图 编码/变更 *温度RoHS/无铅？
MAX6721UTRDD2-T停止供货SOT,；6引脚；9mm²-40°C至+85°CRoHS/无铅：否
MAX6721UTRDD3-T停止供货SOT,；6引脚；9mm²-40°C至+85°CRoHS/无铅：否
MAX6721UTRDD4-T停止供货SOT,；6引脚；9mm²-40°C至+85°CRoHS/无铅：否
MAX6721UTRDD5-T停止供货SOT,；6引脚；9mm²-40°C至+85°CRoHS/无铅：否
MAX6721UTRDD6-T停止供货SOT,；6引脚；9mm²-40°C至+85°CRoHS/无铅：否
MAX6721UTRFD1-T停止供货SOT,；6引脚；9mm²-40°C至+85°CRoHS/无铅：否
MAX6721UTRFD2-T停止供货SOT,；6引脚；9mm²-40°C至+85°CRoHS/无铅：否
MAX6721UTRFD3-T停止供货SOT,；6引脚；9mm²-40°C至+85°CRoHS/无铅：否
MAX6721UTRFD4-T停止供货SOT,；6引脚；9mm²-40°C至+85°CRoHS/无铅：否
MAX6721UTRFD5-T停止供货SOT,；6引脚；9mm²-40°C至+85°CRoHS/无铅：否
型号状况推荐替代产品封装：类型 引脚 占位面积封装图 编码/变更 *温度RoHS/无铅？
MAX6721UTRFD6-T停止供货SOT,；6引脚；9mm²-40°C至+85°CRoHS/无铅：否
MAX6721UTRHD1-T停止供货SOT,；6引脚；9mm²-40°C至+85°CRoHS/无铅：否
MAX6721UTRHD2-T停止供货SOT,；6引脚；9mm²-40°C至+85°CRoHS/无铅：否
MAX6721UTRHD3-T停止供货SOT,；6引脚；9mm²-40°C至+85°CRoHS/无铅：否
MAX6721UTRHD4-T停止供货SOT,；6引脚；9mm²-40°C至+85°CRoHS/无铅：否
MAX6721UTRHD5-T停止供货SOT,；6引脚；9mm²-40°C至+85°CRoHS/无铅：否
MAX6721UTRHD6-T停止供货SOT,；6引脚；9mm²-40°C至+85°CRoHS/无铅：否
MAX6721UTRVD1-T停止供货SOT,；6引脚；9mm²-40°C至+85°CRoHS/无铅：否
MAX6721UTRVD2-T停止供货SOT,；6引脚；9mm²-40°C至+85°CRoHS/无铅：否
MAX6721UTRVD3+T生产中SOT,；6引脚；9mm²-40°C至+85°CRoHS/无铅：无铅
型号状况推荐替代产品封装：类型 引脚 占位面积封装图 编码/变更 *温度RoHS/无铅？
MAX6721UTRVD3-T停止供货SOT,；6引脚；9mm²-40°C至+85°CRoHS/无铅：否
MAX6721UTRVD4-T停止供货SOT,；6引脚；9mm²-40°C至+85°CRoHS/无铅：否
MAX6721UTRVD5-T停止供货SOT,；6引脚；9mm²-40°C至+85°CRoHS/无铅：否
MAX6721UTRVD6-T停止供货SOT,；6引脚；9mm²-40°C至+85°CRoHS/无铅：否
MAX6721UTRYD1-T停止供货SOT,；6引脚；9mm²-40°C至+85°CRoHS/无铅：否
MAX6721UTRYD2-T停止供货SOT,；6引脚；9mm²-40°C至+85°CRoHS/无铅：否
MAX6721UTRYD3-T停止供货SOT,；6引脚；9mm²-40°C至+85°CRoHS/无铅：否
MAX6721UTRYD4-T停止供货SOT,；6引脚；9mm²-40°C至+85°CRoHS/无铅：否
MAX6721UTRYD5-T停止供货SOT,；6引脚；9mm²-40°C至+85°CRoHS/无铅：否
MAX6721UTRYD6-T停止供货SOT,；6引脚；9mm²-40°C至+85°CRoHS/无铅：否
MAX6715-MAX6729.pdf MAX6727
MAX6715-MAX6729.pdf MAX6729
Watchdogs Improve System Reliability—How to Choose the Right Part MAX6724
Products 产品服务
Manufacturers 生产厂家
联系购买Sales
©1993 - 2024 BDTIC