参数资料
型号: NCP300LSN20T3G
厂商: ON Semiconductor
文件页数: 18/26页
文件大小: 0K
描述: IC VOLT DETECT CMOS 2.0V 5TSOP
标准包装: 10,000
类型: 简单复位/加电复位
监视电压数目: 1
输出: 推挽式,图腾柱
复位: 低有效
电压 - 阀值: 2V
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: 带卷 (TR)
NCP300, NCP301
APPLICATION CIRCUIT INFORMATION
V supply
5.0 V
2
Input
NCP301
LSN45T1
1
Reset Output
3.3 V
3
2
GND
Input
NCP301
LSN30T1
1
Reset Output
Low state output if either power
supply is below the respective
undervoltage detector threshold
3
GND
but greater than 1.0 V.
Figure 29. Dual Power Supply Undervoltage Supervision
V DD
R H
2
Input
R L
V DD
NCP301
LSN27T1
3
GND
1
Reset Output
Reset
Microprocessor
GND
Figure 30. Microprocessor Reset Circuit with Additional Hysteresis
V th +
R H
R in
Comparator hysteresis can be increased with the addition of
resistor R H . The hysteresis equations have been simplified and
do not account for the change of input current I in as V in crosses
the comparator threshold. The internal resistance, R in is simply
calculated using I in = 0.26 m A at 2.6 V.
V in Decreasing:
) 1 V DET *
V in Increasing:
V th Decreasing
(V)
2.70
2.70
2.70
2.70
2.70
2.70
2.70
Test Data
V th Increasing
(V)
2.84
2.87
2.88
2.91
2.90
2.94
2.98
V HYS
(V)
0.135
0.17
0.18
0.21
0.20
0.24
0.28
R H
( W )
0
100
100
100
220
220
220
R L
(k W )
?
10
6.8
4.3
10
6.8
4.3
V th +
R H
R in ? R L
) 1
V DET * ) V HYS
2.70
2.70
2.70
2.97
3.04
3.15
0.27
0.34
0.45
470
470
470
10
6.8
4.3
V HYS = V in Increasing ? V in Decreasing
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