参数资料
型号: NCP304HSQ30T1G
厂商: ON Semiconductor
文件页数: 18/24页
文件大小: 0K
描述: IC VOLT DETECT CMOS 3.0V SC-82AB
标准包装: 1
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: 高有效
电压 - 阀值: 3V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: SC-82A,SOT-343
供应商设备封装: SC-82AB
包装: 剪切带 (CT)
其它名称: NCP304HSQ30T1GOSCT
NCP304, NCP305
V DD
R H
2
Input
R L
V DD
NCP301
NCP305
LSN27T1
LSQ27T1
4
GND
1
Reset Output
Reset
Microprocessor
GND
Figure 29. 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
(mV)
2.70
2.70
2.70
2.70
2.70
2.70
2.70
Test Data
V th Increasing
(mV)
2.84
2.87
2.88
2.91
2.90
2.94
2.98
V HYS
(mV)
0.135
0.17
0.19
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
2.70
3.04
3.15
0.27
0.34
0.35
470
470
470
10
6.8
4.3
V HYS = V in Increasing ? V in Decreasing
5.0 V
100 k
Test Data
C
2
Input
82 k
C ( m F)
0.01
f OSC (kHz)
2590
I Q ( m A)
21.77
NCP301
NCP302
LSN27T1
HSQ27T1
1
Reset Output
0.1
1.0
490
52
21.97
22.07
4
GND
Figure 30. Simple Clock Oscillator
http://onsemi.com
18
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