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| 型号： | NCP301LSN27T1G |
| 厂商： | ON Semiconductor |
| 文件页数： | 15/26页 |
| 文件大小： | 0K |
| 描述： | IC DETECTOR VOLTAGE 2.7V 5TSOP |
| 标准包装： | 1 |
| 类型： | 简单复位/加电复位 |
| 监视电压数目： | 1 |
| 输出： | 开路漏极或开路集电极 |
| 复位： | 低有效 |
| 电压 - 阀值： | 2.7V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 6-TSOP（0.059"，1.50mm 宽）5 引线 |
| 供应商设备封装： | 5-TSOP |
| 包装： | 标准包装 |
| 产品目录页面： | 1128 (CN2011-ZH PDF) |
| 其它名称： | NCP301LSN27T1GOSDKR |
NCP300, NCP301
V CC TRANSIENT REJECTION
The NCP300 and NCP301 series provides accurate V CC
monitoring and reset timing during power ? up,
power ? down, and brownout/sag conditions, and rejects
negative glitches on the power supply line. Figure 22 shows
FACTORS TO BE CONSIDERED FOR VOLTAGE
OPTION SELECTION
The following hysteresis graph depicts V DET ? _min/max
and V DET+_min/max for an active low Reset device:
the maximum transient duration vs. maximum negative
excursion (overdrive) for glitch rejection. Any combination
of duration and overdrive which lies under the curve will not
generate a reset signal. A below ? V CC condition (on the
right) is detected as a brownout or power ? down. Typically,
any transient that goes 100 mV below the reset threshold and
Output
V DET ? _typ
lasts 5.0 m s or less will not cause a reset pulse.
Transient immunity can be improved by adding a
V DET ? _min
V DET ? _max
V DET+_min
V DET+_max
capacitor in close proximity to the V CC pin of the NCP30x.
V CC
V TH
Overdrive
Duration
Figure 22. Max Transient Duration vs. Max Overdrive
300
250
Input
V DET+_min = V DET ? _min + V HYS_min
V DET+_max = V DET ? _max + V HYS_max
Figure 24.
For selecting a voltage option in the NCP30X family,
three major factors should be considered:
1. V DET+_max : Maximum detector threshold voltage
for increasing V in for the NCP30X device.
2. V in_min : Minimum voltage output of the power
supply. This is also the input voltage to the
NCP30X device.
3. V CC_min : Minimum power supply voltage
specification for the device that is protected by the
200
150
100
50
V TH = 4.90 V
V TH = 3.10 V
V TH = 1.60 V
NCP30X.
The V DET+_max for an NCP30X device is normally
calculated as follows:
V DET+_max + V DET ? _max ) V HYS_max (eq. 1)
Where:
V DET ? _max = Maximum detector threshold voltage for
decreasing Vin
0
10
30 50 70 90 110 130
RESET COMPARATOR OVERDRIVE
Figure 23.
150
V HYS_max = Maximum detector threshold hysteresis
The above two parameters can be obtained directly from
the data sheet to figure out the V DET+_max .
In the NCP30X family, for a given V DET ? _typ , which is the
typical detection voltage reflected in the part number, the
threshold values are designed to the following targets (at
25 ° C):
V DET ? _min + V DET ? _typ * 2%
V DET ? _max + V DET ? _typ ) 2%
V HYS_typ + 5% of V DET ? _typ
V HYS_min + V HYS_typ * 40%
V HYS_max + V HYS_typ ) 40%
By simple mathematical calculation,
Equations 2 to 6, Equation 1 becomes:
(eq. 2)
(eq. 3)
(eq. 4)
(eq. 5)
(eq. 6)
combining
http://onsemi.com
15
V DET+_max + V DET ? _typ
1.09
(eq. 7)
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相关代理商/技术参数 |
参数描述 |
|---|---|
| NCP301LSN27T1GH | 制造商:ON Semiconductor 功能描述: |
| NCP301LSN28T1 | 功能描述:电压监测器/监控器 2.8V Detector 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 |
| NCP301LSN28T1G | 功能描述:电压监测器/监控器 2.8V Detector w/Reset Low 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 |
| NCP301LSN29T1 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:Voltage Detector Series |
| NCP301LSN30T1 | 功能描述:电压监测器/监控器 3.0V Detector 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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