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DS1831

更新时间： 2024-01-08 18:39:28
品牌 Logo 应用领域
美信 - MAXIM /
页数 文件大小 规格书
14页 199K
描述
Multisupply Micromonitor

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中文翻译

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DS1831 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active零件包装代码：SOIC
包装说明：SOP, SOP16,.25针数：16
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01Factory Lead Time：6 weeks
风险等级：1.33其他特性：POWER-ON-RESET
可调阈值：NO模拟集成电路 - 其他类型：POWER SUPPLY SUPPORT CIRCUIT
JESD-30 代码：R-PDSO-G16JESD-609代码：e3
长度：9.9 mm湿度敏感等级：1
信道数量：4功能数量：1
端子数量：16最高工作温度：85 °C
最低工作温度：-40 °C封装主体材料：PLASTIC/EPOXY
封装代码：SOP封装等效代码：SOP16,.25
封装形状：RECTANGULAR封装形式：SMALL OUTLINE
峰值回流温度（摄氏度）：260电源：1/5.5 V
认证状态：Not Qualified座面最大高度：1.75 mm
子类别：Power Management Circuits最大供电电流 (Isup)：0.1 mA
最大供电电压 (Vsup)：5.5 V最小供电电压 (Vsup)：1 V
标称供电电压 (Vsup)：3.3 V表面贴装：YES
温度等级：INDUSTRIAL端子面层：Matte Tin (Sn)
端子形式：GULL WING端子节距：1.27 mm
端子位置：DUAL处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：3.9 mmBase Number Matches：1

DS1831 数据手册

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DS1831/A/B  
OPERATION—POWER MONITOR  
The DS1831 provides the functions of detecting out-of-tolerance conditions on a 3.3V (or 3V) and 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 IN3.3V or IN5V 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 5V supply is tied to the 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 DS1831A watchdog. TD inputs select time delays for the IN5V and IN3.3V resets outputs and  
the Watchdog on the DS1831A. 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 push-button 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  
VCC  
MIN  
10ms  
100ms  
1000ms  
TYP  
16ms  
MAX  
20ms  
200ms  
2000ms  
160ms  
1600ms  
3 of 14  
1234567...14

中文翻译

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