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参数资料
| 型号： | S-80857CNNB-B9I-T2G |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO4 |
| 封装： | LEAD FREE, SC-82AB, 4 PIN |
| 文件页数： | 16/59页 |
| 文件大小： | 579K |
| 代理商： | S-80857CNNB-B9I-T2G |
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SUPER-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR
Rev.5.0_00
S-808xxC Series
Seiko Instruments Inc.
23
Operation
1. Basic Operation: CMOS Output (Active Low)
1-1.
When the power supply voltage (VDD) is higher than the release voltage (
+VDET), the Nch transistor is
OFF and the Pch transistor is ON to provide VDD (high) at the output. Since the Nch transistor N1 in
Figure 17
is OFF, the comparator input voltage is
C
B
A
DD
C
B
R
V
)
R
(
+
+
.
1-2.
When the VDD goes below
+VDET, the output provides the VDD level, as long as the VDD remains above
the detection voltage
VDET. When the VDD falls below VDET (point A in Figure 18), the Nch transistor
becomes ON, the Pch transistor becomes OFF, and the VSS level appears at the output. At this time
the Nch transistor N1 in Figure 17 becomes ON, the comparator input voltage is changed to
B
A
DD
B
R
V
R
+
.
1-3.
When the VDD falls below the minimum operating voltage, the output becomes undefined, or goes to the
VDD when the output is pulled up to the VDD.
1-4.
The VSS level appears when the VDD rises above the minimum operating voltage. The VSS level still
appears even when the VDD surpasses
VDET, as long as it does not exceed the release voltage +VDET.
1-5.
When the VDD rises above
+VDET (point B in Figure 18), the Nch transistor becomes OFF and the Pch
transistor becomes ON to provide VDD level at the output.
VREF
Pch
Nch
N1
RC
RB
RA
+
OUT
VSS
VDD
*1
*1.
Parasiteic diode
Figure 17 Operation 1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| S-80857CNPF-B9ITFG | 功能描述:电压监测器/监控器 Voltage Detector 0.8uA Iq RoHS:否 制造商:Texas Instruments 监测电压数:2 监测电压:Adjustable 输出类型:Open Drain 欠电压阈值: 过电压阈值: 准确性:1 % 工作电源电压:1.5 V to 6.5 V 工作电源电流:1.8 uA 最大工作温度:+ 125 C 封装 / 箱体:SON-6 安装风格:SMD/SMT |
| S-80857CNUA-B9IT2G | 功能描述:电压监测器/监控器 Voltage Detector 0.8uA Iq RoHS:否 制造商:Texas Instruments 监测电压数:2 监测电压:Adjustable 输出类型:Open Drain 欠电压阈值: 过电压阈值: 准确性:1 % 工作电源电压:1.5 V to 6.5 V 工作电源电流:1.8 uA 最大工作温度:+ 125 C 封装 / 箱体:SON-6 安装风格:SMD/SMT |
| S-80857CNY-B2-U | 功能描述:电压监测器/监控器 Voltage Detector 0.8uA Iq RoHS:否 制造商:Texas Instruments 监测电压数:2 监测电压:Adjustable 输出类型:Open Drain 欠电压阈值: 过电压阈值: 准确性:1 % 工作电源电压:1.5 V to 6.5 V 工作电源电流:1.8 uA 最大工作温度:+ 125 C 封装 / 箱体:SON-6 安装风格:SMD/SMT |
| S-80857CNY-B-G | 制造商:Seiko Instruments Inc (SII) 功能描述:IC VOLT DETECTOR 5.7V TO-92 |
| S-80858CLMC-B7JT2G | 功能描述:电压监测器/监控器 Voltage Detector 0.8uA Iq RoHS:否 制造商:Texas Instruments 监测电压数:2 监测电压:Adjustable 输出类型:Open Drain 欠电压阈值: 过电压阈值: 准确性:1 % 工作电源电压:1.5 V to 6.5 V 工作电源电流:1.8 uA 最大工作温度:+ 125 C 封装 / 箱体:SON-6 安装风格:SMD/SMT |
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