S-19104N10H-M5T1U Datasheet, PDF (35/40 Pages) Seiko Instruments Inc – VOLTAGE DETECTOR WITH SENSE PIN

FOR AUTOMOTIVE 105°C OPERATION BUILT-IN DELAY CIRCUIT (EXTERNAL DELAY TIME SETTING) VOLTAGE DETECTOR WITH SENSE PIN
Rev.1.2_00
S-19104/19106 Series
2. Change of detection voltage
If there is not a product with a specified detection voltage value in the S-19104/19106 Series, the detection voltage
can be changed by using a resistance divider or a diode, as seen in Figure 38 to Figure 41.
In Figure 38 and Figure 39, hysteresis width also changes.
V_DD
R_A
V_IN
R_B
VDD
SENSE OUT
VSS CD
R
100 kΩ
V_DD
R_A
V_IN
R_B
VDD
SENSE OUT
VSS CD
GND
Figure 38 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 CD
R
100 kΩ
GND
Figure 39 Detection voltage change
when using a resistance divider
(CMOS output product)
V_DD
V_f1
V_IN
VDD
SENSE OUT
VSS CD
GND
Figure 40 Detection voltage change
when using a diode
(Nch open-drain output product)
GND
Figure 41 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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