S-19102N10H-M5T1U Datasheet, PDF (32/37 Pages) Seiko Instruments Inc – VOLTAGE DETECTOR WITH SENSE PIN

FOR AUTOMOTIVE 105°C OPERATION VOLTAGE DETECTOR WITH SENSE PIN
S-19102/19108 Series
Rev.1.2_01
2. Change of detection voltage
If there is not a product with a specified detection voltage value in the S-19102/19108 Series, the detection voltage
can be changed by using a resistance divider or a diode, as seen in Figure 34 to Figure 37.
In Figure 34 and Figure 35, hysteresis width also changes.
V_DD
R_A
V_IN
R_B
VDD
SENSE OUT
VSS
R
100 kΩ
V_DD
R_A
V_IN
R_B
VDD
SENSE OUT
VSS
GND
Figure 34 Detection voltage change
when using a resistance divider
(Nch open-drain output product)
Remark
Detection voltage =
R_A + R_B
R_B
• −V_DET
Hysteresis width =
R_A + R_B
R_B
• V_HYS
V_DD
V_f1
V_IN
VDD
SENSE OUT
VSS
R
100 kΩ
GND
Figure 35 Detection voltage change
when using a resistance divider
(CMOS output product)
V_DD
V_f1
V_IN
VDD
SENSE OUT
VSS
GND
Figure 36 Detection voltage change
when using a diode
(Nch open-drain output product)
GND
Figure 37 Detection voltage change
when using a diode
(CMOS output product)
Remark Detection voltage = V_f1 + (−V_DET)
Caution 1.
2.
The above connection diagram and constant will not guarantee successful operation.
Perform thorough evaluation using the actual application to set the constant.
Set the constants referring to "2. 1 Error when detection voltage is set externally" in
" Operation".
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