s-1009c15s Seiko Instruments Inc., s-1009c15s Datasheet - Page 28

• Manufacturer Part Number: s-1009c15s
• Description: Super-low Current Consumption Super High-accuracy Voltage Detector With Delay Circuit External Delay Time Setting
• Manufacturer: Seiko Instruments Inc.

28
SUPER-LOW CURRENT CONSUMPTION SUPER HIGH-ACCURACY VOLTAGE DETECTOR WITH DELAY CIRCUIT (EXTERNAL DELAY TIME SETTING)
S-1009 Series
*1. R
Caution
3. Change of detection voltage
Detection voltage =
Hysteresis width =
(R
A
VSS
In the Nch open drain output products of S-1009 Series, users do not need a specific value of detection voltage, the
detection voltage can be changed by using a resistance divider or a diode, as seen in Figure 31 and 32.
In Figure 31, hysteresis width also changes.
VDD
Caution
A
≤ 100 kΩ)
should be 100 kΩ or less to prevent oscillation.
If R
may also 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).
R
R
A
A
*1
B
The above connection diagram and constant will not guarantee successful operation.
Perform thorough evaluation using the actual application to set the constant.
and R
VIN
R
B
R
A
Figure 31
A
R
are large, the hysteresis width
+ R
R
B
+ R
B
B
S-1009N
B
• V
• −V
HYS
DET
(Nch open drain
ouput product)
R
100 kΩ
Seiko Instruments Inc.
OUT
Detection voltage = V
VSS
VDD
V
f1
VIN
f1
Figure 32
+ (−V
S-1009N
DET
)
(Nch open drain
output product)
Rev.4.0
R
100 kΩ
OUT
_00