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| 型號： | MCP111T-300TT |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | Micropower Voltage Detector |
| 中文描述： | 微功耗電壓檢測器 |
| 文件頁數(shù)： | 4/22頁 |
| 文件大?。?/td> | 332K |
| 代理商： | MCP111T-300TT |
MCP111/112
DS21889B-page 12
2004 Microchip Technology Inc.
4.2
Negative Going VDD Transients
The minimum pulse width (time) required to cause a
reset may be an important criteria in the implementa-
tion of a POR circuit. This time is referred to as
transient duration and is the amount of time needed for
these supervisory devices to respond to a drop in VDD.
The transient duration time is dependant on the magni-
tude of VTRIP – VDD. Generally speaking, the transient
duration decreases with increases in VTRIP – VDD.
Figure 4-3 shows a typical transient duration vs. reset
comparator overdrive for which the MCP111/112 will
not generate a reset pulse. It shows that the farther
below the trip point the transient pulse goes, the
duration of the pulse required to cause a reset gets
shorter. Figure 2-18 shows the transient response
characteristics for the MCP111/112.
A 0.1 F bypass cap mounted as close as possible to
the VDD pin provides additional transient immunity
(refer to Figure 4-1).
FIGURE 4-3:
Example of Typical
Transient Duration Waveform.
4.3
Effect of Temperature on Time-out
Period (tRPU)
The time-out period (t
RPU) determines how long the
device remains in the reset condition. This is affected
by both V
DD and temperature. The graph shown in
Figures 2-22,
2-23 and
2-24 show the typical
response for different V
DD values and temperatures.
Time (s)
0V
S
uppl
y
V
o
lt
a
g
e
5V
VTRIP(MIN) - VDD
tTRANS
VTRIP(MAX)
VTRIP(MIN)
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| MCP111T-315E | Micropower Voltage Detector |
| MCP111T-315LB | Micropower Voltage Detector |
| MCP111T-315TT | Micropower Voltage Detector |
| MCP111T-450E | Micropower Voltage Detector |
| MCP111T-450LB | Micropower Voltage Detector |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MCP111T-315E | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:Micropower Voltage Detector |
| MCP111T-315E/LB | 功能描述:監(jiān)控電路 Open Drain RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| MCP111T-315E/MB | 功能描述:監(jiān)控電路 Open Drain RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| MCP111T-315E/TT | 功能描述:監(jiān)控電路 Open Drain RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| MCP111T-315ELB | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:Micropower Voltage Detector |
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