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DS1231/S Datasheet(PDF) 6 Page - Maxim Integrated Products

Part # DS1231/S
Description  Power Monitor Chip
PDF  9 Pages
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

DS1231/S Datasheet(HTML) 6 Page - Maxim Integrated Products

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DS1231/S
022698 6/9
APPLICATION WITH MODE PIN GROUNDED Figure 6
IN
MODE
TOL
GND
VCC
NMI
RST
RST
TO
µ P
DS1231
+5VDC
VOLTAGE SENSE POINT
EXAMPLE:
CTR = 0.2 IC = 30
µA IF = 150 µA
VOLTAGE SENSE POINT = 105 AND
VZ = 100 VOLTS
IC
R1
IF
-5% VCC THRESHOLD
VOLTAGE SENSE POINT (TRIP VALUE)
+ VZ ) IC
CTR
XR1
CTR
+ IC
IF
CTR
+ CURRENT TRANSFER RATIO
VZ
+ ZENNER VOLTAGE
THEN 105
+ 100 ) 30
0.2
xR1
R1
+ 33K
NOTE: RST requires a pull–up resister.
AC VOLTAGE MONITOR WITH OPTO-ISOLATION Figure 7
IN
MODE
TOL
GND
VCC
NMI
RST
RST
-5% VCC THRESHOLD
TO
µ P
DS1231
+5VDC
AC LINE
INPUT
NOTE: RST requires a pull–up resister.



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