參數(shù)資料
型號(hào): ICL8212
廠商: Intersil Corporation
英文描述: Programmable Voltage Detectors
中文描述: 可編程電壓檢測(cè)器
文件頁(yè)數(shù): 11/14頁(yè)
文件大小: 153K
代理商: ICL8212
7-171
ICL8211, ICL8212
FIGURE 27. TWO ATERNATIVE VOLTAGE DETECTION
CIRCUITS EMPLOYING HYSTERESIS TO
PROVIDE PAIRS OF WELL DEFINED TRIP
VOLTAGES
1
2
3
4
8
7
6
5
V+
R
1
R
2
FIG 7
V
O
R
3
Low trip voltage
V
TR1
=
(R
1
+ R
2
) x 1.15 + 0.1V
R
1
High trip voltage
(R
1
+ R
2
+ R
3
)
R
1
volts
V
TR2
=
x 1.15V
1
2
3
4
8
7
6
5
V+
R
P
R
S
V
O
R
Q
Low trip voltage
V
TR1
=
R
Q
R
S
(R
Q
+ R
S
)
+ R
P
x
R
P
x 1.15V
1
High trip voltage
V
TR2
=(R
P
+ R
Q
)
R
P
FIGURE 27B.
x 1.15V
V
TR1
V
TR2
OFF
ON
I
SUPPLY VOLTAGE
FIGURE 27C.
ON
OFF
I
FIGURE 27A.
FIGURE 28. LOW VOLTAGE BATTERY INDICATOR
FIGURE 29. NON-VOLATILE LOW VOLTAGE INDICATOR
1
2
3
4
8
7
6
5
R
3
R
2
LED
LAMP
ICL8211
150k
NOTE 1. R
3
OPTIONAL
(NOTE 1)
1
2
3
4
8
7
6
5
V+
R
1
R
2
OUTPUT
R
3
S
1
R
L
FIGURE 29A.
V
TR1
V
TR2
OFF
ON
I
ON
OFF
I
V
NOM
A
B
SUPPLY VOLTAGE
FIGURE 29B.
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