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S-1003 Fiches technique(PDF) 34 Page - ABLIC Inc.

No de pièce S-1003
Description  MANUAL RESET BUILT-IN DELAY CIRCUIT (EXTERNAL DELAY TIME SETTING) HIGH-ACCURACY VOLTAGE DETECTOR
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Fabricant  ABLIC [ABLIC Inc.]
Site Internet  https://www.ablic.com
Logo ABLIC - ABLIC Inc.

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MANUAL RESET BUILT-IN DELAY CIRCUIT (EXTERNAL DELAY TIME SETTING) HIGH-ACCURACY VOLTAGE DETECTOR
S-1003 Series
Rev.1.0_03
34
2. Change of detection voltage (Nch open-drain output product only)
If there is not a product with a specified detection voltage value in the S-1003N Series, the detection voltage can be
changed by using a resistance divider or a diode, as seen in Figure 40 and Figure 41.
In Figure 40, hysteresis width also changes.
(Nch open-drain
output product)
RA
*1
VIN
GND
VDD
RB
(RA  100 k)
R
100 k
VDD
CD
VSS
OUT
MR
*2
Detection voltage =
RA  RB
RB
 VDET
Hysteresis width =
RA  RB
RB
 VHYS
(Nch open-drain
output product)
Vf1
VIN
GND
VDD
R
100 k
VDD
CD
VSS
OUT
MR
*1
Detection voltage = Vf1  (VDET)
*1. Set to VIN or GND (MR pin non-active).
*1. RA should be 100 k or less to prevent oscillation.
*2. Set to VIN or GND (MR pin non-active).
Caution If RA and RB are large, the hysteresis width
may also be larger than the value given by
the above equation due to the feed-through
current.
Figure 40
Figure 41
Caution 1. The above connection diagram and constant will not guarantee successful operation.
Perform thorough evaluation using the actual application to set the constant.
2. Note that the hysteresis width may be larger as the following equation shows when using the
above connections. Perform thorough evaluation using the actual application to set the
constant.
Maximum hysteresis width =
RA  RB
RB
 VHYSRA  20 A
3. When using the manual reset function, refer to "2. 4 When connecting resistance (RA)
between power supply voltage (VDD) and VDD pin" in " Operation" to set the constant.


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