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S-808XXC Datasheet(PDF) 36 Page - Seiko Instruments Inc

No. de Pieza. S-808XXC
Descripción  SUPER-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR
Descarga  58 Pages
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Fabricante  SII [Seiko Instruments Inc]
Página de inicio  http://www.sii.co.jp
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S-808XXC Datasheet(HTML) 36 Page - Seiko Instruments Inc

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SUPER-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR
S-808xxC Series
Rev.4.3_00
36
Seiko Instruments Inc.
3. Change of Detection Voltage
In Nch open-drain output products of the S-808xxC series, detection voltage can be changed using
resistance dividers or diodes as shown in Figures 32 to 33. In Figure 32, hysteresis width also changes.
(Nch open-drain
output products)
RA
*1
OUT
VIN
VSS
VDD
+
S-
808xxCN
RB
(RA
≤75 kΩ)
DET
B
B
A
V
R
R
R
voltagae
Detection
+
=
HYS
B
B
A
V
R
R
R
width
Hysterisis
+
=
(Nch open-drain
output product)
Vf1
OUT
VIN
VSS
VDD
S-
808xxCN
Vf2
Detection voltage=Vf1+Vf2+(
−VDET)
*1.
RA should be 75 k
Ω or less to prevent oscillation.
Caution If RA and RB are large, the hysteresis
width may aloso be larger than the
value given by the above equation due
to the through-type current (which
flows slightly in an Nch open-drain
product).
Figure 32
Figure 33
Caution The above connection diagram and constants do not guarantee correct operation. Perform
sufficient evaluation using the actual application to set the constants.


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