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参数资料
| 型号： | DS1836C-20 |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 3/9页 |
| 文件大小： | 0K |
| 描述： | IC MICROMAN 3.3V ACT LO 20% 8DIP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| 系列： | MicroManager |
| 类型： | 备用电池电路 |
| 监视电压数目： | 1 |
| 输出： | 推挽式，图腾柱 |
| 复位： | 低有效 |
| 复位超时： | 最小为 200 ms |
| 电压 - 阀值： | 2.72V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 通孔 |
| 封装/外壳： | 8-DIP（0.300"，7.62mm） |
| 供应商设备封装： | 8-PDIP |
| 包装： | 管件 |
DS1836A/B/C/D
Non-Maskable Interrupt
The DS1836 generates a non-maskable interrupt ( NMI ) for early warning of a power failure. A precision
comparator monitors the voltage level at the IN pin relative to an on-chip reference generated by an
internal band gap. The IN pin is a high impedance input allowing for a user-defined sense point. An
external resistor voltage divider network (Figure 3) is used to interface with high voltage signals. This
sense point may be derived from a regulated supply or from a higher DC voltage level closer to the main
system power input. Since the IN trip point V TP is 1.25V, the proper values for R1 and R2 can be
determined by the equation as shown in Figure 3. Proper operation of the DS1836 requires that the
maximum voltage at the IN pin be limited to the active supply (V CC or V BAT ). Therefore, the maximum
allowable voltage at the supply being monitored (V MAX ) can also be derived as shown in Figure 3. A
simple approach to solving the equation is to select a value for R2 high enough to keep power
consumption low and solve for R1. The flexibility of the IN input pin allows for detection of power loss
at the earliest point in a power supply system, maximizing the amount of time for system shutdown
between NMI and RST (or RST ).
A pull-up resistor is required for proper operation of the NMI open-drain output. A 10k Ω resistor would
be a typical value for the pull-up resistor.
TYPICAL APPLICATION Figure 2
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相关代理商/技术参数 |
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|---|---|
| DS1836C-20+ | 功能描述:监控电路 3.3/5V MicroManager 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 |
| DS1836CS05 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Peripheral IC |
| DS1836CS-10 | 功能描述:监控电路 3.3/5V MicroManager 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 |
| DS1836CS-10/T&R | 制造商:Maxim Integrated Products 功能描述:IC MICROMAN 3.3V ACT LO 10%8SOIC |
| DS1836CS-10/T&R+W | 制造商:Maxim Integrated Products 功能描述:PROCESSOR SUPERVISOR 2.88V 55UA 8SOIC N - Tape and Reel |
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