快速浏览 - MAX6715A, MAX6716A, MAX6717A, MAX6718A, MAX6719A, MAX6720A, MAX6721A, MAX6722A, MAX6723A, MAX6724A, MAX6725A, MAX6726A, MAX6727A, MAX6728A, MAX6729A, MAX6797A 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, 184kB)
英文下载

MAX6715A–MAX6729A/MAX6797A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。

MAX6715A–MAX6729A/MAX6797A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)。MAX6715A–MAX6729A/MAX6797A采用小尺寸5、6或8引脚SOT23封装，工作温度范围-40°C至+125°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)
可禁止看门狗工作
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/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

Active Low

min

@ +25°C

max

See Notes

MAX6715A

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

Open Drain

1ms to 15ms

15ms to 85ms

85ms to 300ms

300ms to 1s

>1s

No Watchdog

Manual Reset

2.5

$1.38 @1k

MAX6716A

Push-Pull

No Watchdog

Manual Reset

$1.38 @1k

MAX6717A

Open Drain

No Watchdog

Manual Reset

$1.16 @1k

MAX6718A

Push-Pull

No Watchdog

Manual Reset

$1.16 @1k

MAX6721A

Open Drain

Extended Setup Period

Input (WDI)

1s to 2s

>2s

Manual Reset

$1.38 @1k

MAX6722A

Push-Pull

Extended Setup Period

Input (WDI)

1s to 2s

>2s

Manual Reset

$1.38 @1k

MAX6728A

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

MAX6729A

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

MAX6797A

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

Active Low

Active High

min

@ +25°C

max

See Notes

MAX6719A

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

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

MAX6720A

Push-Pull

No Watchdog

Adjustable Reset Input

Manual Reset

$1.38 @1k

MAX6723A

Open Drain

Extended Setup Period

Input (WDI)

1s to 2s

>2s

Adjustable Reset Input

$1.38 @1k

MAX6724A

Push-Pull

Extended Setup Period

Input (WDI)

1s to 2s

>2s

Adjustable Reset Input

$1.38 @1k

MAX6725A

Open Drain

Extended Setup Period

Input (WDI)

1s to 2s

>2s

Adjustable Reset Input

Manual Reset

$1.50 @1k

MAX6726A

Push-Pull

Extended Setup Period

Input (WDI)

1s to 2s

>2s

Adjustable Reset Input

Manual Reset

$1.50 @1k

MAX6727A

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)