参数资料
型号: MAX6884ETP+
厂商: Maxim Integrated Products
文件页数: 17/34页
文件大小: 0K
描述: IC SUPERVISOR PWR SPL 20-TQFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 60
类型: 多压监控器
监视电压数目: 6
输出: 开路漏极,推挽式
复位: 高有效/低有效
复位超时: 可调节/可选择
电压 - 阀值: 6 种可选阀值组合
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 20-WQFN 裸露焊盘
供应商设备封装: 20-TQFN-EP(5x5)
包装: 管件
EEPROM-Programmable, Hex
Power-Supply Supervisory Circuits
Programmable Outputs
The MAX6884/MAX6885 feature three programmable
active-low outputs: RESET , UV / OV , and WDO . Program
each output for open-drain or weak pullup. An internal
10k ? resistor connected from each output to a 2.55V
internal LDO provides a weak pullup. During power-up,
the outputs are held low for 1V < V CC < V UVLO . Any
output programmed to depend on no condition always
remains in its active state. For example, if the state of
UV / OV is not programmed to depend on any condition,
UV / OV will always be low. Figure 3 shows a timing dia-
gram of a typical relationship between a monitored
input voltage and outputs RESET and UV / OV . RESET
and UV / OV are a function of only IN1.
RESET
Table 6). As an example, RESET may depend on the
IN3 primary undervoltage threshold, MR , UV / OV , and
WDO . Write 1’s to R11h[1:0], R11h[4], and R12h[7] to
configure as indicated. IN3 must be above the under-
voltage threshold, MR must be high, UV / OV must be
deasserted, and WDO must be deasserted to be a
logic “1, ” then RESET deasserts. The logic state of
RESET , in this example, is equivalent to the logical
statement:
IN3 · MR · UV / OV · WDO
RESET remains low for its programmed timeout period
(t RP ) after all assertion-causing conditions are
removed. Program timeout periods for RESET from
25μs to 1600ms (see Table 6). Configure RESET for
open-drain or weak pullup through bit R12h[0].
Program RESET to depend on MR , UV / OV , WDO , or
any programmable primary voltage-detector input (see
SECONDARY
THRESHOLD
(OVERVOLTAGE)
V IN1
PRIMARY
THRESHOLD
UV/OV
t UP
RESET
t RP
Figure 3. Output Timing Diagram
______________________________________________________________________________________
17
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相关代理商/技术参数
参数描述
MAX6884ETP+ 功能描述:监控电路 EEPROM-Prog Hex Power-Sup Sequencer 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
MAX6884ETP+T 功能描述:监控电路 EEPROM-Prog Hex Power-Sup Sequencer 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
MAX6884ETP-T 功能描述:监控电路 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
MAX6884EVCMOD2 功能描述:监控电路 Programmers, Development Systems 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
MAX6884EVKIT 功能描述:监控电路 Programmers, Development Systems 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