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参数资料
| 型号： | CAT809ZTBI-T |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO3 |
| 封装： | LEAD-FREE, PLASTIC, SOT-23, 3 PIN |
| 文件页数： | 11/13页 |
| 文件大小： | 62K |
| 代理商： | CAT809ZTBI-T |
7
CAT809, CAT810
Patent Pending
Doc. No. 3004, Rev. S
DETAILED DESCRIPTIONS
RESET TIMING
The reset signal is asserted LOW for the CAT809 and HIGH for the CAT810 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.
VCC TRANSIENT RESPONSE
The CAT809/810 protect
Ps against brownout failure. Short duration transients of 4sec or less and 100 mV
amplitude typically do not cause a false RESET.
Figure 2 shows the maximum pulse duration of negative-going VCC transients that do not cause a reset condition. As
the amplitude of the transient goes further below the threshold (increasing VTH - VCC), the maximum pulse duration
decreases. In this test, the VCC starts from an initial voltage of 0.5V above the threshold and drops below it by the
amplitude of the overdrive voltage (VTH - VCC).
5V
0V
5V
0V
5V
0V
CAT809
CAT810
Threshold
Voltage
140ms
minimum
Reset Timeout Period
Power
Supply
Voltage
RESET
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
TRANSIENT
DURA
TION
[
s)
RESET OVERDRIVE VTH - VCC [mV]
1
10
100
1000
TAMB = 25°C
CAT809M
CAT809Z
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相关代理商/技术参数 |
参数描述 |
|---|---|
| CAT809ZTBIT10 | 制造商:CATALYST 制造商全称:Catalyst Semiconductor 功能描述:3-Pin Microprocessor Power Supply Supervisors |
| CAT809ZTBI-T10 | 功能描述:监控电路 2.32V Push-Pull Low 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 |
| CAT809ZTBIT3 | 制造商:CATALYST 制造商全称:Catalyst Semiconductor 功能描述:3-Pin Microprocessor Power Supply Supervisors |
| CAT809ZTBI-T3 | 功能描述:监控电路 2.32V Push-Pull Low 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 |
| CAT810 | 制造商:CATALYST 制造商全称:Catalyst Semiconductor 功能描述:3-Pin Microprocessor Power Supply Supervisors |
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