s-80857cny-n-g Seiko Instruments Inc., s-80857cny-n-g Datasheet - Page 36

• Manufacturer Part Number: s-80857cny-n-g
• Description: Super-small Package High-precision Voltage Detector
• Manufacturer: Seiko Instruments Inc.

36
SUPER-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR
S-808xxC Series
2. Power-on Reset Circuit
A power-on reset circuit can be constructed using Nch open-drain output product of S-808××C Series.
Remark When the power rises sharply as shown in the Figure 31 left, the output may goes to the high level
for an instant in the undefined region where the output voltage is undefined since the power
voltage is less than the minimum operation voltage.
V
(V)
V
(V)
DD
DD
*1. Resistor R should be 75 kΩ or less to prevent oscillation.
*2. Diode Di instantaneously discharges the charge stored in the capacitor (C) at the
power falling,Di can be removed when the delay of the falling time is not important.
(R≤75 kΩ)
VDD
VSS
R
C
* 1
Seiko Instruments Inc.
t (s)
t (s)
VIN
Di
*2
Figure 29
Figure 30
Figure 31
S-
808xxCN
OUT
(V)
(Nch open-drain products)
OUT
(V)
OUT
t (s)
t (s)
Rev.5.0
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