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參數(shù)資料
| 型號： | CAT811 |
| 英文描述： | 4-Pin Microprocessor Power Supply Supervisors |
| 中文描述： | 4引腳微處理器電源監(jiān)控 |
| 文件頁數(shù)： | 7/11頁 |
| 文件大?。?/td> | 59K |
| 代理商： | CAT811 |
7
CAT811, CAT812
Patent Pending
Doc. No. 3005, Rev. P
DETAILED DESCRIPTIONS
RESET TIMING
The reset signal is asserted LOW for the CAT811 and HIGH for the CAT812 when the power supply voltage falls below
the threshold trip voltage and remains asserted for at least 140ms after the power supply voltage has risen above the
threshold.
V
CC
TRANSIENT RESPONSE
The CAT811/812 protect
μ
Ps against brownout failure. Short duration transients of 4
μ
sec or less and 100 mV
amplitude typically do not cause a false RESET.
Figure 2 shows the maximum pulse duration of negative-going V
CC
transients that do not cause a reset condition. As
the amplitude of the transient goes further below the threshold (increasing V
TH
- V
CC
), the maximum pulse duration
decreases. In this test, the V
CC
starts from an initial voltage of 0.5V above the threshold and drops below it by the
amplitude of the overdrive voltage (V
TH
- V
CC
).
Figure 1. Reset Timing Diagram
Figure 2. Maximum Transient Duration Without Causing a Reset Pulse vs. Reset Comparator Overdrive
30
25
20
15
10
5
0
T
μ
s
RESET OVERDRIVE VTH - VCC [mV]
1 10 100 1000
TAMB = 25
°
C
CAT8xxM
CAT8xxZ
5V
0V
5V
0V
5V
0V
CAT811
CAT812
Threshold
Voltage
140ms
minimum
Reset Timeout Period
Power
Supply
Voltage
RESET
RESET
相關PDF資料 |
PDF描述 |
|---|---|
| CAT811EUS-T10 | 4-Pin Microprocessor Power Supply Supervisors |
| CAT811J | 4-Pin Microprocessor Power Supply Supervisors |
| CAT811L | 4-Pin Microprocessor Power Supply Supervisors |
| CAT811M | 4-Pin Microprocessor Power Supply Supervisors |
| CAT811R | 4-Pin Microprocessor Power Supply Supervisors |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| CAT811_05 | 制造商:CATALYST 制造商全稱:Catalyst Semiconductor 功能描述:4-Pin Microprocessor Power Supply Supervisors with Manual Reset |
| CAT811_08 | 制造商:CATALYST 制造商全稱:Catalyst Semiconductor 功能描述:4-Pin Microprocessor Power Supply Supervisors with Manual Reset |
| CAT811EUS-T | 制造商:CATALYST 制造商全稱:Catalyst Semiconductor 功能描述:4-Pin Microprocessor Power Supply Supervisors |
| CAT811EUS-T10 | 制造商:CATALYST 制造商全稱:Catalyst Semiconductor 功能描述:4-Pin Microprocessor Power Supply Supervisors |
| CAT811J | 制造商:CATALYST 制造商全稱:Catalyst Semiconductor 功能描述:4-Pin Microprocessor Power Supply Supervisors |
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