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DS1831C PDF预览

DS1831C

更新时间: 2024-11-25 04:39:11
品牌 Logo 应用领域
达拉斯 - DALLAS /
页数 文件大小 规格书
14页 76K
描述
3.3V/2.5V Multi-Supply MicroMonitor

DS1831C 数据手册

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DS1831C/D/E  
3.3V/2.5V Multi-Supply MicroMonitor  
www.dalsemi.com  
FEATURES  
PIN ASSIGNMENT  
2.5V power-on reset  
DS1831C  
3.3 (or 3V) power-on reset  
2 referenced comparators with separate  
outputs for monitoring additional supplies  
Internal power is drawn from higher of either  
the IN2.5V input or the IN3.3V input  
Excellent for systems designed to operate  
with multiple power supplies  
Asserts resets during power transients  
IN2.5V  
RST2.5V  
TOL2.5V  
TD2.5V  
PBRST2.5V  
IN1  
1
2
3
4
5
6
7
8
16  
15  
14  
13  
12  
11  
10  
9
IN3.3V  
RST3.3V  
TOL3.3V  
TD3.3V  
PBRST3.3V  
NMI1  
Pushbutton reset input for system override  
Maintains reset for user configurable times  
IN2  
NMI2  
of 10 ms, 100 ms, or 1 sec  
GND  
MPBRST  
Watchdog timer for software monitoring  
16-Pin (300 mil) DIP  
&
(DS1831D)  
Precision temperature-compensated voltage  
16-Pin (150 mil) SOIC  
reference and voltage sensor  
DS1831D  
16 pin DIP & 16 pin 150 mil SOIC available  
Operating Temperature of -40°C to +85°C  
IN1  
ST  
6
7
8
11  
10  
9
NMI1  
WDS  
TDWD  
GND  
DS1831E  
TD2.5V  
PBRST2.5V  
IN1  
4
5
6
13  
12  
11  
TD3.3V  
PBST  
NMI1  
DESCRIPTION  
The DS1831C Multi-Supply Monitor & Reset monitors up to 4 system voltages: 2.5 volt supply, 3.3 (or  
3) volt supply, and 2 additional user configurable voltage monitors. DS1831 power for internal operation  
comes from the higher voltage level of the 3.3 volt input or the 2.5 volt input. One of these inputs must  
be greater than 1 volt for device operation. Pushbutton (manual reset) functionality is provided for the  
2.5 volt reset, the 3.3 volt reset or for all reset outputs by the master pushbutton. The DS1831D replaces  
one reference comparator and the master pushbutton with watchdog and the DS1831E replaces the  
3.3-volt PBRST with a last reset status output.  
TOL and TD inputs allow user configuration of the DS1831 for multiple applications. The TOL inputs  
configure the tolerance for the specified output and the TD inputs configure the reset time delays.  
1 of 14  
051100  

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