S-1000 SII [Seiko Instruments Inc], S-1000 Datasheet - Page 22

• Manufacturer Part Number: S-1000
• Description: ULTRA-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR
• Manufacturer: SII [Seiko Instruments Inc]

22
ULTRA-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR
S-1000 Series
2. Power-on reset circuit
A power-on reset circuit can be constructed using Nch open-drain output product of S-1000 Series.
Remark When the power rises sharply as shown in the Figure 28 left, the output may go to the high level for an instant
Caution The above connection diagram and constants do not guarantee correct operation. Perform sufficient
*1. R should be 75 kΩ or less, and C should be 0.01 µF or more to prevent oscillation.
*2. Diode Di instantaneously discharges the charge stored in the capacitor (C) at the power falling, Di can be removed
If C is not connected, R should be 800 Ω or less.
when the delay of the falling time is not important.
in the undefined region where the output voltage is undefined since the power voltage is less than the minimum
operation voltage.
evaluation using the actual application to set the constants.
V
(V)
V
(V)
DD
DD
VDD
VSS
C
R
*1
*1
VIN
Seiko Instruments Inc.
t (s)
Di
t (s)
*2
Figure 26
Figure 27
Figure 28
S-1000N
(Nch open-drain products)
OUT
(V)
OUT
(V)
OUT
t (s)
t (s)
Rev.2.3
_00