快速浏览 - MAX6715, MAX6716, MAX6717, MAX6718, MAX6719, MAX6720, MAX6721, MAX6722, MAX6723, MAX6724, MAX6725, MAX6726, MAX6727, MAX6728, MAX6729 双/三路、超低电压、SOT23封装、微处理器监控电路

概述

完整的数据资料 (PDF, 720kB)
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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(V_CC1)和0.9V至3.3V次级电源(V_CC2)，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。V_CC1或V_CC2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		应用/使用
V_CC1 (主电源电压)复位门限：1.58V至4.63V V_CC2 (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) V_CC1或V_CC2低至0.8V时保证复位输出正常复位输出逻辑选项不受V_CC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		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

Key Specifications: Supervisors (2 Monitored Voltages)

Part Number

Interface

Reset Thresh.
(V)

Reset Out

t_RESET

Watchdog Feature

Watchdog Timeout

Supervisor Features

Reset Thresh. Accur.
(%)

I_CC
(µA)

Price

min

@ +25°C

max

See Notes

MAX6715

Factory 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 Reset

2.5

$1.38 @1k

MAX6716

Active Low

Push-Pull

No Watchdog

Manual Reset

$1.38 @1k

MAX6717

Active Low

Open Drain

No Watchdog

Manual Reset

$1.16 @1k

MAX6718

Active Low

Push-Pull

No Watchdog

Manual Reset

$1.16 @1k

MAX6721

Active Low

Open Drain

Extended Setup Period

Input (WDI)

1s to 2s

>2s

Manual Reset

$1.38 @1k

MAX6722

Active Low

Push-Pull

Extended Setup Period

Input (WDI)

1s to 2s

>2s

Manual Reset

$1.38 @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

$1.50 @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

$1.50 @1k

查看所有Supervisors (2 Monitored Voltages) (84)

Key Specifications: Supervisors (3 Monitored Voltages)

Part Number

Interface

Reset Thresh.
(V)

Reset Out

t_RESET

Watchdog Feature

Watchdog Timeout

Supervisor Features

Reset Thresh. Accur.
(%)

I_CC
(µA)

Price

min

@ +25°C

max

See Notes

MAX6719

Factory 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

2.5

$1.38 @1k

MAX6720

Active Low

Push-Pull

No Watchdog

Adjustable Reset Input

Manual Reset

$1.38 @1k

MAX6723

Active Low

Open Drain

Extended Setup Period

Input (WDI)

1s to 2s

>2s

Adjustable Reset Input

$1.38 @1k

MAX6724

Active Low

Push-Pull

Extended Setup Period

Input (WDI)

1s to 2s

>2s

Adjustable Reset Input

$1.38 @1k

MAX6725

Active High

Active Low

Open Drain

Extended Setup Period

Input (WDI)

1s to 2s

>2s

Adjustable Reset Input

Manual Reset

$1.50 @1k

MAX6726

Active High

Active Low

Push-Pull

Extended Setup Period

Input (WDI)

1s to 2s

>2s

Adjustable Reset Input

Manual Reset

$1.50 @1k

MAX6727

Active Low

Open Drain

Extended Setup Period

Input (WDI)

1s to 2s

>2s

Adjustable Reset Input

Manual Reset

$1.50 @1k

查看所有Supervisors (3 Monitored Voltages) (32)