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| 型号： | MAX835EUK+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 6/9页 |
| 文件大小： | 0K |
| 描述： | IC MONITOR VOLT LATCH SOT23-5 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 类型： | 简单复位/加电复位 |
| 监视电压数目： | 1 |
| 输出： | 推挽式，图腾柱 |
| 复位： | 低有效 |
| 复位超时： | 标准传输延迟为 80 µs |
| 电压 - 阀值： | 可调节/可选择 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SC-74A，SOT-753 |
| 供应商设备封装： | SOT-23-5 |
| 包装： | 标准包装 |
| 产品目录页面： | 1414 (CN2011-ZH PDF) |
| 其它名称： | MAX835EUK+TDKR |
Micropower, Latching Voltage Monitors
in SOT23-5
_______________Detailed Description
The MAX834/MAX835 micropower voltage monitors con-
tain a 1.204V precision bandgap reference and a com-
parator with an output latch (Figure 1). The difference
between the two parts is the structure of the comparator
output driver. The MAX834 has an open-drain, n-channel
output driver that can be pulled up to a voltage higher
than V CC , but less than 11V. The MAX835’s output is
push-pull and can both source and sink current.
Programming the Trip Voltage (V TRIP )
Two external resistors set the trip voltage, V TRIP (Figure 2).
V TRIP is the point at which the falling monitored voltage
(typically V CC ) causes OUT to go low. IN’s high input
impedance allows the use of large-value resistors without
compromising trip voltage accuracy. To minimize current
consumption, choose a value for R2 between 500k ? and
1M ? , then calculate R1 as follows:
R1 = R2 [(V TRIP / V TH ) - 1]
> V TRIP
V MON
< V TRIP
where V TRIP is the desired trip voltage and V TH is the
threshold voltage (1.204V). The voltage at IN must be at
least 1V less than V CC .
Latched-Output Operation
The MAX834/MAX835 feature a level-sensitive latch
input (CLEAR), designed to eliminate the need for hys-
teresis in battery undervoltage-detection applications.
When the monitored voltage (V MON ) is above the pro-
grammed trip voltage (V TRIP ) (as when the system bat-
tery is recharged or a fresh battery is installed), pulse
CLEAR low-high-low for at least 1μs to reset the output
latch ( OUT goes high). When V MON falls below V TRIP ,
OUT goes low and remains low (even if V MON rises
above V TRIP ), until CLEAR is pulsed high again with
V MON > V TRIP . Figure 3a shows the timing relationship
between V MON , OUT , and CLEAR.
V CC
CLEAR
0V
V CC
OUT
0V
Figure 3a. Timing Diagram
> V TRIP
V MON
< V TRIP
V CC
OUT
0V
Figure 3b. Timing Diagram, CLEAR = V CC
> 1 μ s
> 1 μ s
> 1 μ s
6
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX836EUS | 制造商:Maxim Integrated Products 功能描述:4-PIN MICROPOWER VOOLTAGE MONITORS - Bulk 制造商:Maxim Integrated Products 功能描述:VOLT MONITOR SMD SOT-143-4 836 |
| MAX836EUS+ | 制造商:Maxim Integrated Products 功能描述:VOLT SUPERVISOR MONITOR 1.204V 4PIN SOT-143 - Rail/Tube 制造商:Maxim Integrated Products 功能描述:Volt Supervisor Monitor 4-Pin (3+Tab) SOT-143 Bulk 制造商:Maxim Integrated Products 功能描述:VOLT MONITOR SMD SOT-143-4 836 制造商:Maxim Integrated Products 功能描述:Voltage Monitor,MAX836EUS+ |
| MAX836EUS+T | 功能描述:监控电路 4-Pin uPower Voltage Monitor 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 |
| MAX836EUS-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 |
| MAX8375 | 制造商:PCTEL 功能描述:ANTENNA UNIT |
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