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| 型号： | DS1831CS+T&R |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 4/15页 |
| 文件大小： | 0K |
| 描述： | IC MULTIMON 3.3/2.5V 16-SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 系列： | MicroMonitor™ |
| 类型： | 多压监控器 |
| 监视电压数目： | 4 |
| 输出： | 开路漏极或开路集电极 |
| 复位： | 低有效 |
| 复位超时： | 最小为 10 ms；100 ms；1,000 ms |
| 电压 - 阀值： | 2.5V，3.3V，可调，可调 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-SOIC |
| 包装： | 带卷 (TR) |
DS1831C/D/E
OPERATION—POWER MONITOR
The DS1831 provides the functions of detecting out-of-tolerance conditions on a 3.3V (or 3V) and 2.5V
power supply and warning a processor based system of impending power failure. When an input is
detected as out-of-tolerance on either voltage input the RST for that supply will be forced active low.
When that input returns to a valid state the associated RST will remain active for the time delay selected
with the associated TD input and then return to an inactive state until the next input out-of-tolerance
condition.
On power-up both resets are kept active for the selected reset time after the associated power supply input
has reached the selected tolerance. This allows the power supply and system power to stabilize before
RST is released.
All internal operating current for the DS1831 will be supplied by either the IN 3.3V or IN 2.5V input which
ever has the highest voltage level.
OPERATION—TOLERANCE SELECT
The DS1831 provides two TOL inputs for individual customization of the DS1831 to specific application
requirements. If the TOL for the 2.5V supply is tied to the 2.5V input a 5% tolerance is selected. If the
TOL is connected to ground a 10% tolerance is selected or if it is left unconnected a 15% tolerance is
selected. If the TOL for the 3.3V supply is tied to the 3.3V input a 5% tolerance is selected, a 10%
tolerance is selected if it is connected to ground, and a 20% tolerance is selected if the input is left
unconnected. These tolerance conditions are set at power up and can only be changed by power cycling
the device.
OPERATION—RESET TIME-DELAY SELECT
The DS1831 provides two TD inputs for individual customization of reset time delays and an additional
one for the DS1831D watchdog. TD inputs select time delays for the IN 2.5V and IN 3.3V resets outputs and
the Watchdog on the DS1831D. The reset time delays are shown in Table 1. These allow the selection of
minimum delays of 10ms, 100ms, and 1000ms.
Wiring an individual reset output to the pushbutton input of the other voltage reset allows custom reset
timings or allows for the sequencing of the reset outputs. See Figure 2.
These time delays are set at power-up and cannot be changed after the device reaches an in-tolerance
condition.
TD INPUTS/RESET AND WATCHDOG TIME-DELAYS Table 1
RESET TIME-DELAY
TD
GND
Float
V CC
MIN
10ms
100ms
1000ms
TYP
16ms
160ms
1600ms
MAX
20ms
200ms
2000ms
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1831D | 功能描述:监控电路 3.3/5V Multisupply MicroMonitor RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| DS1831D+ | 功能描述:监控电路 3.3/5V Multisupply MicroMonitor RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| DS1831DS | 功能描述:监控电路 3.3/5V Multisupply MicroMonitor RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| DS1831DS/T&R | 制造商:Maxim Integrated Products 功能描述:3.3/2.5 MULTIMONITOR W/WD SO/TR - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC MULTIMON 3.3/2.5V WDOG 16SOIC 制造商:Maxim Integrated Products 功能描述:Supervisory Circuits 3.3/5V Multisupply MicroMonitor |
| DS1831DS/T&R | 功能描述:监控电路 3.3/5V Multisupply MicroMonitor RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
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