SII S-80956CLNB

Rev.3.3_00
ULTRA-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR
WITH DELAY CIRCUIT (EXTERNAL DELAY TIME SETTING)
S-809xxC Series
The S-809xxC Series is a high-precision voltage
detector developed using CMOS process.
The
detection voltage is fixed internally with an accuracy of
±2.0 %. A time delayed reset can be accomplished
with the addition of an external capacitor. Two output
forms, Nch open-drain and CMOS output, are
available.
„ Features
• Ultra-low current consumption
•
•
•
•
•
•
1.0 μA typ. (Detection voltage ≤ 1.4 V, at VDD=2.0 V)
1.1 μA typ. (Detection voltage ≥ 1.5 V, at VDD=3.5 V)
High-precision detection voltage ±2.0 %
Operating voltage range
0.7 V to 10.0 V
Hysteresis characteristics
5 % typ.
Detection voltage
1.3 V to 6.0 V (0.1 V step)
Output forms
Nch open-drain output (Active Low)
CMOS output (Active Low)
Lead-free products
„ Applications
• Power supply monitor for portable equipment such as notebook PCs, digital still cameras, PDAs and
cellular phones
• Constant voltage power monitor for cameras, video equipment and communication equipment
• Power monitor and reset for CPUs and microcomputers
„ Packages
Package name
SC-82AB
SOT-23-5
SNT-4A
Package
NP004-A
MP005-A
PF004-A
Drawing code
Tape
Reel
NP004-A
NP004-A
MP005-A
MP005-A
PF004-A
PF004-A
Seiko Instruments Inc.
Land
—
—
PF004-A
1
ULTRA-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR WITH DELAY CIRCUIT (EXTERNAL DELAY TIME SETTING)
Rev.3.3_00
S-809xxC Series
„ Block Diagrams
1. Nch Open-drain Output Products
VDD
+
*1
−
Delay
circuit
OUT
*1
*1
VREF
VSS
CD
*1. Parasitic diode
Figure 1
2. CMOS Output Products
VDD
*1
+
*1
−
Delay
circuit
OUT
*1
*1
VREF
VSS
CD
*1. Parasitic diode
Figure 2
2
Seiko Instruments Inc.
ULTRA-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR WITH DELAY CIRCUIT (EXTERNAL DELAY TIME SETTING)
Rev.3.3_00
S-809xxC Series
„ Product Name Structure
The detection voltage, output form and packages for S-809xxC Series can be selected at the user's
request. Refer to the "1. Product Name" for the construction of the product name and "2. Product Name
List" for the full product names.
1. Product Name
S - 809xx
C
x
xx
-
xxx
xx
G
IC direction in tape specifications*1
T2: SC-82AB, SOT-23-5
TF: SNT-4A
Product code*2
Package code
NB: SC-82AB
MC: SOT-23-5
PF: SNT-4A
Output form
N: Nch open-drain output (Active Low)
L: CMOS output (Active Low)
Detection voltage value
13 to 60
(e.g. When the detection voltage is 1.3 V,
it is expressed as 13.)
*1. Refer to the taping specifications at the end of this book.
*2. Refer to the Table 1 to 2 in the “2. Product Name List”
Seiko Instruments Inc.
3
ULTRA-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR WITH DELAY CIRCUIT (EXTERNAL DELAY TIME SETTING)
Rev.3.3_00
S-809xxC Series
2. Product Name List
2-1. Nch Open-drain Output Products
Table 1
Detection voltage
range
1.3 V ±2.0 %
1.4 V ±2.0 %
1.5 V ±2.0 %
1.6 V ±2.0 %
1.7 V ±2.0 %
1.8 V ±2.0 %
1.9 V ±2.0 %
2.0 V ±2.0 %
2.1 V ±2.0 %
2.2 V ±2.0 %
2.3 V ±2.0 %
2.4 V ±2.0 %
2.5 V ±2.0 %
2.6 V ±2.0 %
2.7 V ±2.0 %
2.8 V ±2.0 %
2.9 V ±2.0 %
3.0 V ±2.0 %
3.1 V ±2.0 %
3.2 V ±2.0 %
3.3 V ±2.0 %
3.4 V ±2.0 %
3.5 V ±2.0 %
3.6 V ±2.0 %
3.7 V ±2.0 %
3.8 V ±2.0 %
3.9 V ±2.0 %
4.0 V ±2.0 %
4.1 V ±2.0 %
4.2 V ±2.0 %
4.3 V ±2.0 %
4.4 V ±2.0 %
4.5 V ±2.0 %
4.6 V ±2.0 %
4.7 V ±2.0 %
4.8 V ±2.0 %
4.9 V ±2.0 %
5.0 V ±2.0 %
5.1 V ±2.0 %
5.2 V ±2.0 %
5.3 V ±2.0 %
5.4 V ±2.0 %
5.5 V ±2.0 %
5.6 V ±2.0 %
5.7V ±2.0 %
5.8 V ±2.0 %
5.9 V ±2.0 %
6.0 V ±2.0 %
4
Hysteresis
width (Typ.)
0.065 V
0.070 V
0.075 V
0.080 V
0.085 V
0.090 V
0.095 V
0.100 V
0.105 V
0.110 V
0.115 V
0.120 V
0.125 V
0.130 V
0.135 V
0.140 V
0.145 V
0.150 V
0.155 V
0.160 V
0.165 V
0.170 V
0.175 V
0.180 V
0.185 V
0.190 V
0.195 V
0.200 V
0.205 V
0.210 V
0.215 V
0.220 V
0.225 V
0.230 V
0.235 V
0.240 V
0.245 V
0.250 V
0.255 V
0.260 V
0.265 V
0.270 V
0.275 V
0.280 V
0.285 V
0.290 V
0.295 V
0.300 V
SC-82AB
SOT-23-5
SNT-4A
S-80913CNNB-G8HT2G
S-80914CNNB-G8JT2G
S-80915CNNB-G8KT2G
S-80916CNNB-G8LT2G
S-80917CNNB-G8MT2G
S-80918CNNB-G8NT2G
S-80919CNNB-G8PT2G
S-80920CNNB-G8QT2G
S-80921CNNB-G8RT2G
S-80922CNNB-G8ST2G
S-80923CNNB-G8TT2G
S-80924CNNB-G8UT2G
S-80925CNNB-G8VT2G
S-80926CNNB-G8WT2G
S-80927CNNB-G8XT2G
S-80928CNNB-G8YT2G
S-80929CNNB-G8ZT2G
S-80930CNNB-G80T2G
S-80931CNNB-G81T2G
S-80932CNNB-G82T2G
S-80933CNNB-G83T2G
S-80934CNNB-G84T2G
S-80935CNNB-G85T2G
S-80936CNNB-G86T2G
S-80937CNNB-G87T2G
S-80938CNNB-G88T2G
S-80939CNNB-G89T2G
S-80940CNNB-G9AT2G
S-80941CNNB-G9BT2G
S-80942CNNB-G9CT2G
S-80943CNNB-G9DT2G
S-80944CNNB-G9ET2G
S-80945CNNB-G9FT2G
S-80946CNNB-G9GT2G
S-80947CNNB-G9HT2G
S-80948CNNB-G9JT2G
S-80949CNNB-G9KT2G
S-80950CNNB-G9LT2G
S-80951CNNB-G9MT2G
S-80952CNNB-G9NT2G
S-80953CNNB-G9PT2G
S-80954CNNB-G9QT2G
S-80955CNNB-G9RT2G
S-80956CNNB-G9ST2G
S-80957CNNB-G9TT2G
S-80958CNNB-G9UT2G
S-80959CNNB-G9VT2G
S-80960CNNB-G9WT2G
S-80913CNMC-G8HT2G
S-80914CNMC-G8JT2G
S-80915CNMC-G8KT2G
S-80916CNMC-G8LT2G
S-80917CNMC-G8MT2G
S-80918CNMC-G8NT2G
S-80919CNMC-G8PT2G
S-80920CNMC-G8QT2G
S-80921CNMC-G8RT2G
S-80922CNMC-G8ST2G
S-80923CNMC-G8TT2G
S-80924CNMC-G8UT2G
S-80925CNMC-G8VT2G
S-80926CNMC-G8WT2G
S-80927CNMC-G8XT2G
S-80928CNMC-G8YT2G
S-80929CNMC-G8ZT2G
S-80930CNMC-G80T2G
S-80931CNMC-G81T2G
S-80932CNMC-G82T2G
S-80933CNMC-G83T2G
S-80934CNMC-G84T2G
S-80935CNMC-G85T2G
S-80936CNMC-G86T2G
S-80937CNMC-G87T2G
S-80938CNMC-G88T2G
S-80939CNMC-G89T2G
S-80940CNMC-G9AT2G
S-80941CNMC-G9BT2G
S-80942CNMC-G9CT2G
S-80943CNMC-G9DT2G
S-80944CNMC-G9ET2G
S-80945CNMC-G9FT2G
S-80946CNMC-G9GT2G
S-80947CNMC-G9HT2G
S-80948CNMC-G9JT2G
S-80949CNMC-G9KT2G
S-80950CNMC-G9LT2G
S-80951CNMC-G9MT2G
S-80952CNMC-G9NT2G
S-80953CNMC-G9PT2G
S-80954CNMC-G9QT2G
S-80955CNMC-G9RT2G
S-80956CNMC-G9ST2G
S-80957CNMC-G9TT2G
S-80958CNMC-G9UT2G
S-80959CNMC-G9VT2G
S-80960CNMC-G9WT2G
S-80913CNPF-G8HTFG
S-80914CNPF-G8JTFG
S-80915CNPF-G8KTFG
S-80916CNPF-G8LTFG
S-80917CNPF-G8MTFG
S-80918CNPF-G8NTFG
S-80919CNPF-G8PTFG
S-80920CNPF-G8QTFG
S-80921CNPF-G8RTFG
S-80922CNPF-G8STFG
S-80923CNPF-G8TTFG
S-80924CNPF-G8UTFG
S-80925CNPF-G8VTFG
S-80926CNPF-G8WTFG
S-80927CNPF-G8XTFG
S-80928CNPF-G8YTFG
S-80929CNPF-G8ZTFG
S-80930CNPF-G80TFG
S-80931CNPF-G81TFG
S-80932CNPF-G82TFG
S-80933CNPF-G83TFG
S-80934CNPF-G84TFG
S-80935CNPF-G85TFG
S-80936CNPF-G86TFG
S-80937CNPF-G87TFG
S-80938CNPF-G88TFG
S-80939CNPF-G89TFG
S-80940CNPF-G9ATFG
S-80941CNPF-G9BTFG
S-80942CNPF-G9CTFG
S-80943CNPF-G9DTFG
S-80944CNPF-G9ETFG
S-80945CNPF-G9FTFG
S-80946CNPF-G9GTFG
S-80947CNPF-G9HTFG
S-80948CNPF-G9JTFG
S-80949CNPF-G9KTFG
S-80950CNPF-G9LTFG
S-80951CNPF-G9MTFG
S-80952CNPF-G9NTFG
S-80953CNPF-G9PTFG
S-80954CNPF-G9QTFG
S-80955CNPF-G9RTFG
S-80956CNPF-G9STFG
S-80957CNPF-G9TTFG
S-80958CNPF-G9UTFG
S-80959CNPF-G9VTFG
S-80960CNPF-G9WTFG
Seiko Instruments Inc.
ULTRA-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR WITH DELAY CIRCUIT (EXTERNAL DELAY TIME SETTING)
Rev.3.3_00
S-809xxC Series
2-2. CMOS Output Products
Table 2
Detection voltage
range
1.3 V ±2.0 %
1.4 V ±2.0 %
1.5 V ±2.0 %
1.6 V ±2.0 %
1.7 V ±2.0 %
1.8 V ±2.0 %
1.9 V ±2.0 %
2.0 V ±2.0 %
2.1 V ±2.0 %
2.2 V ±2.0 %
2.3 V ±2.0 %
2.4 V ±2.0 %
2.5 V ±2.0 %
2.6 V ±2.0 %
2.7 V ±2.0 %
2.8 V ±2.0 %
2.9 V ±2.0 %
3.0 V ±2.0 %
3.1 V ±2.0 %
3.2 V ±2.0 %
3.3 V ±2.0 %
3.4 V ±2.0 %
3.5 V ±2.0 %
3.6 V ±2.0 %
3.7 V ±2.0 %
3.8 V ±2.0 %
3.9 V ±2.0 %
4.0 V ±2.0 %
4.1 V ±2.0 %
4.2 V ±2.0 %
4.3 V ±2.0 %
4.4 V ±2.0 %
4.5 V ±2.0 %
4.6 V ±2.0 %
4.7 V ±2.0 %
4.8 V ±2.0 %
4.9 V ±2.0 %
5.0 V ±2.0 %
5.1 V ±2.0 %
5.2 V ±2.0 %
5.3 V ±2.0 %
5.4 V ±2.0 %
5.5 V ±2.0 %
5.6 V ±2.0 %
5.7 V ±2.0 %
5.8 V ±2.0 %
5.9 V ±2.0 %
6.0 V ±2.0 %
Hysteresis
width (Typ.)
0.065 V
0.070 V
0.075 V
0.080 V
0.085 V
0.090 V
0.095 V
0.100 V
0.105 V
0.110 V
0.115 V
0.120 V
0.125 V
0.130 V
0.135 V
0.140 V
0.145 V
0.150 V
0.155 V
0.160 V
0.165 V
0.170 V
0.175 V
0.180 V
0.185 V
0.190 V
0.195 V
0.200 V
0.205 V
0.210 V
0.215 V
0.220 V
0.225 V
0.230 V
0.235 V
0.240 V
0.245 V
0.250 V
0.255 V
0.260 V
0.265 V
0.270 V
0.275 V
0.280 V
0.285 V
0.290 V
0.295 V
0.300 V
SC-82AB
S-80913CLNB-G6HT2G
S-80914CLNB-G6JT2G
S-80915CLNB-G6KT2G
S-80916CLNB-G6LT2G
S-80917CLNB-G6MT2G
S-80918CLNB-G6NT2G
S-80919CLNB-G6PT2G
S-80920CLNB-G6QT2G
S-80921CLNB-G6RT2G
S-80922CLNB-G6ST2G
S-80923CLNB-G6TT2G
S-80924CLNB-G6UT2G
S-80925CLNB-G6VT2G
S-80926CLNB-G6WT2G
S-80927CLNB-G6XT2G
S-80928CLNB-G6YT2G
S-80929CLNB-G6ZT2G
S-80930CLNB-G60T2G
S-80931CLNB-G61T2G
S-80932CLNB-G62T2G
S-80933CLNB-G63T2G
S-80934CLNB-G64T2G
S-80935CLNB-G65T2G
S-80936CLNB-G66T2G
S-80937CLNB-G67T2G
S-80938CLNB-G68T2G
S-80939CLNB-G69T2G
S-80940CLNB-G7AT2G
S-80941CLNB-G7BT2G
S-80942CLNB-G7CT2G
S-80943CLNB-G7DT2G
S-80944CLNB-G7ET2G
S-80945CLNB-G7FT2G
S-80946CLNB-G7GT2G
S-80947CLNB-G7HT2G
S-80948CLNB-G7JT2G
S-80949CLNB-G7KT2G
S-80950CLNB-G7LT2G
S-80951CLNB-G7MT2G
S-80952CLNB-G7NT2G
S-80953CLNB-G7PT2G
S-80954CLNB-G7QT2G
S-80955CLNB-G7RT2G
S-80956CLNB-G7ST2G
S-80957CLNB-G7TT2G
S-80958CLNB-G7UT2G
S-80959CLNB-G7VT2G
S-80960CLNB-G7WT2G
SOT-23-5
SNT-4A
S-80913CLMC-G6HT2G
S-80914CLMC-G6JT2G
S-80915CLMC-G6KT2G
S-80916CLMC-G6LT2G
S-80917CLMC-G6MT2G
S-80918CLMC-G6NT2G
S-80919CLMC-G6PT2G
S-80920CLMC-G6QT2G
S-80921CLMC-G6RT2G
S-80922CLMC-G6ST2G
S-80923CLMC-G6TT2G
S-80924CLMC-G6UT2G
S-80925CLMC-G6VT2G
S-80926CLMC-G6WT2G
S-80927CLMC-G6XT2G
S-80928CLMC-G6YT2G
S-80929CLMC-G6ZT2G
S-80930CLMC-G60T2G
S-80931CLMC-G61T2G
S-80932CLMC-G62T2G
S-80933CLMC-G63T2G
S-80934CLMC-G64T2G
S-80935CLMC-G65T2G
S-80936CLMC-G66T2G
S-80937CLMC-G67T2G
S-80938CLMC-G68T2G
S-80939CLMC-G69T2G
S-80940CLMC-G7AT2G
S-80941CLMC-G7BT2G
S-80942CLMC-G7CT2G
S-80943CLMC-G7DT2G
S-80944CLMC-G7ET2G
S-80945CLMC-G7FT2G
S-80946CLMC-G7GT2G
S-80947CLMC-G7HT2G
S-80948CLMC-G7JT2G
S-80949CLMC-G7KT2G
S-80950CLMC-G7LT2G
S-80951CLMC-G7MT2G
S-80952CLMC-G7NT2G
S-80953CLMC-G7PT2G
S-80954CLMC-G7QT2G
S-80955CLMC-G7RT2G
S-80956CLMC-G7ST2G
S-80957CLMC-G7TT2G
S-80958CLMC-G7UT2G
S-80959CLMC-G7VT2G
S-80960CLMC-G7WT2G
S-80913CLPF-G6HTFG
S-80914CLPF-G6JTFG
S-80915CLPF-G6KTFG
S-80916CLPF-G6LTFG
S-80917CLPF-G6MTFG
S-80918CLPF-G6NTFG
S-80919CLPF-G6PTFG
S-80920CLPF-G6QTFG
S-80921CLPF-G6RTFG
S-80922CLPF-G6STFG
S-80923CLPF-G6TTFG
S-80924CLPF-G6UTFG
S-80925CLPF-G6VTFG
S-80926CLPF-G6WTFG
S-80927CLPF-G6XTFG
S-80928CLPF-G6YTFG
S-80929CLPF-G6ZTFG
S-80930CLPF-G60TFG
S-80931CLPF-G61TFG
S-80932CLPF-G62TFG
S-80933CLPF-G63TFG
S-80934CLPF-G64TFG
S-80935CLPF-G65TFG
S-80936CLPF-G66TFG
S-80937CLPF-G67TFG
S-80938CLPF-G68TFG
S-80939CLPF-G69TFG
S-80940CLPF-G7ATFG
S-80941CLPF-G7BTFG
S-80942CLPF-G7CTFG
S-80943CLPF-G7DTFG
S-80944CLPF-G7ETFG
S-80945CLPF-G7FTFG
S-80946CLPF-G7GTFG
S-80947CLPF-G7HTFG
S-80948CLPF-G7JTFG
S-80949CLPF-G7KTFG
S-80950CLPF-G7LTFG
S-80951CLPF-G7MTFG
S-80952CLPF-G7NTFG
S-80953CLPF-G7PTFG
S-80954CLPF-G7QTFG
S-80955CLPF-G7RTFG
S-80956CLPF-G7STFG
S-80957CLPF-G7TTFG
S-80958CLPF-G7UTFG
S-80959CLPF-G7VTFG
S-80960CLPF-G7WTFG
Seiko Instruments Inc.
5
ULTRA-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR WITH DELAY CIRCUIT (EXTERNAL DELAY TIME SETTING)
Rev.3.3_00
S-809xxC Series
„ Pin Configurations
Table 3
SC-82AB
Top view
4
3
1
Pin No.
1
2
3
4
Symbol
VSS
VDD
CD
OUT
Description
GND pin
Voltage input pin
Connection pin for delay capacitor
Voltage detection output pin
2
Figure 3
Table 4
SOT-23-5
Top view
5
1
Pin No.
Symbol
Description
1
OUT
Voltage detection output pin
2
VDD
Voltage input pin
3
VSS
GND pin
4
NC*1
No connection
5
CD
Connection pin for delay capacitor
*1. The NC pin is electrically open.
The NC pin can be connected to VDD or VSS.
4
2
3
Figure 4
Table 5
SNT-4A
Top view
1
4
2
3
Pin No.
1
2
3
4
Symbol
VSS
OUT
CD
VDD
Figure 5
6
Seiko Instruments Inc.
Description
GND pin
Voltage detection output pin
Connection pin for delay capacitor
Voltage input pin
ULTRA-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR WITH DELAY CIRCUIT (EXTERNAL DELAY TIME SETTING)
Rev.3.3_00
S-809xxC Series
„ Absolute Maximum Ratings
Table 6
Item
Power supply voltage
CD pin input voltage
Output
Nch open-drain output products
voltage
CMOS output products
Output current
Power
SC-82AB
dissipation
SOT-23-5
(Ta=25°C unless otherwise specified)
Absolute maximum ratings
Unit
12
V
VSS−0.3 to VDD+0.3
VSS −0.3 to VSS+12
Symbol
VDD−VSS
VCD
VOUT
IOUT
PD
SNT-4A
Operating ambient temperature
Topr
Storage temperature
Tstg
*1. When mounted on board
[Mounted board]
(1) Board size: 114.3 mm × 76.2 mm × t1.6 mm
(2) Board name: JEDEC STANDARD51-7
VSS−0.3 to VDD+0.3
50
150 (When not mounted on board)
350*1
250 (When not mounted on board)
600*1
140 (When not mounted on board)
300*1
−40 to +85
−40 to +125
mA
mW
°C
Power Dissipation (PD) [mW]
Caution The absolute maximum ratings are rated values exceeding which the product could suffer
physical damage. These values must therefore not be exceeded under any conditions.
700
600
SOT-23-5
500
SC-82AB
400
300
200
SNT-4A
100
0
0
100
150
50
Ambient Temperature (Ta) [°C]
Figure 6 Power Dissipation of Package (When Mounted on Board)
Seiko Instruments Inc.
7
ULTRA-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR WITH DELAY CIRCUIT (EXTERNAL DELAY TIME SETTING)
Rev.3.3_00
S-809xxC Series
„ Electrical Characteristics
1. Nch Open-drain Output Products
Table 7
Item
Symbol
Condition
Detection voltage*1
−VDET
—
Hysteresis width
VHYS
S-80913 to 14
S-80915 to 60
Current consumption
ISS
VDD=2.0 V
VDD=3.5 V
VDD=4.5 V
VDD=6.0 V
VDD=7.5 V
Operating voltage
VDD
Output current
IOUT
—
Output transistor VDD=0.95 V
Nch, VDS=0.5 V S-80913 to 14
VDD=1.2 V
S-80915 to 60
VDD=2.4 V
S-80927 to 60
Output transistor,
Nch, VDS=10.0 V, VDD=10.0 V
VDD=2.0 V
CD=4.7 nF
S-80913 to 14
VDD=3.5 V
S-80915 to 26
VDD=4.5 V
S-80927 to 39
VDD=6.0 V
S-80940 to 54
VDD=7.5 V
S-80955 to 60
Leakage current
Delay time
ILEAK
tD
S-80913 to 14
S-80915 to 26
S-80927 to 39
S-80940 to 54
S-80955 to 60
(Ta=25°C unless otherwise specified)
Test
Min.
Typ.
Max.
Unit
circuit
−VDET(S) −VDET(S) −VDET(S)
V
1
×0.98
×1.02
−VDET
−VDET
−VDET
×0.03
×0.05
×0.08
−VDET
−VDET
−VDET
×0.03
×0.05
×0.07
—
1.0
2.5
2
µA
—
1.1
2.8
—
1.2
3.0
—
1.3
3.3
—
1.4
3.5
0.7
—
10.0
V
1
0.23
0. 64
—
0.59
1.36
—
2.88
4.98
—
—
—
0.1
µA
2.7
3.6
4.5
ms
20
27
34
mA
3
4
∆ − VDET
ppm/
—
1
Ta=−40°C to +85°C
±100
±350
°C
∆Ta • − VDET
*1. −VDET: Actual detection voltage, −VDET(S): Specified detection voltage (The center value of detection voltage range in
Detection voltage
temperature coefficient*2
Table 1.)
*2. The temperature change ratio in the detection voltage [mV/°C] is calculated by using the following quation.
∆ − VDET
[mV/ °C]*1 = −VDET (Typ.) [V ]*2 × ∆ − VDET [ppm/ °C]*3 ÷ 1000
∆Ta
∆Ta • − VDET
*1. Temperature change ratio of the detection voltage
*2. Specified detection voltage
*3. Detection voltage temperature coefficient
8
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ULTRA-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR WITH DELAY CIRCUIT (EXTERNAL DELAY TIME SETTING)
Rev.3.3_00
S-809xxC Series
2. CMOS Output Products
Table 8
Item
Symbol
Condition
Detection voltage*1
−VDET
—
Hysteresis width
VHYS
S-80913 to 14
S-80915 to 60
Current consumption
ISS
VDD=2.0 V
VDD=3.5 V
VDD=4.5 V
VDD=6.0 V
VDD=7.5 V
Operating voltage
VDD
Output current
IOUT
—
Output transistor, VDD=0.95 V
Nch, VDS=0.5 V S-80913 to 14
VDD=1.2 V
S-80915 to 60
VDD=2.4 V
S-80927 to 60
Output transistor, VDD=4.8 V
Pch, VDS=0.5 V S-80913 to 39
VDD=6.0 V
S-80940 to 54
VDD=8.4 V
S-80955 to 60
VDD=2.0 V
CD=4.7 nF
S-80913 to 14
VDD=3.5 V
S-80915 to 26
VDD=4.5 V
S-80927 to 39
VDD=6.0 V
S-80940 to 54
VDD=7.5 V
S-80955 to 60
Delay time
tD
S-80913 to 14
S-80915 to 26
S-80927 to 39
S-80940 to 54
S-80955 to 60
(Ta=25°C unless otherwise specified)
Test
Min.
Typ.
Max.
Unit
circuit
−VDET(S) −VDET(S) −VDET(S)
V
1
×0.98
×1.02
−VDET
−VDET
−VDET
×0.03
×0.05
×0.08
−VDET
−VDET
−VDET
×0.03
×0.05
×0.07
1.0
—
2.5
2
μA
1.1
—
2.8
1.2
—
3.0
1.3
—
3.3
1.4
—
3.5
0.7
—
10.0
V
1
0.23
0.64
—
0.59
1.36
—
2.88
4.98
—
1.43
2.39
—
1.68
2.78
—
2.08
3.42
—
2.7
3.6
4.5
18
24
30
mA
3
5
ms
4
Δ − VDET
ppm/
Detection voltage
—
1
±100
±350
Ta=−40°C to +85°C
°C
temperature coefficient *2 ΔTa • − VDET
*1. −VDET: Actual detection voltage, −VDET(S): Specified detection voltage (The center value of detection voltage range in
Table 2.)
*2. The temperature change ratio in the detection voltage [mV/°C] is calculated by using the following equation.
Δ − VDET
[mV/ °C]*1 = −VDET (Typ.) [V ]*2 × Δ − VDET [ppm/ °C]*3 ÷ 1000
ΔTa
ΔTa • − VDET
*1. Temperature change ratio of the detection voltage
*2. Specified detection voltage
*3. Detection voltage temperature coefficient
Seiko Instruments Inc.
9
ULTRA-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR WITH DELAY CIRCUIT (EXTERNAL DELAY TIME SETTING)
Rev.3.3_00
S-809xxC Series
„ Test Circuits
2.
1.
A
VDD
VDD
V
*1
R
100 kΩ
S-809xxC OUT
Series
VSS
CD
VDD
VDD
S-809xxC OUT
Series
V
VSS
*1. R is unnecessary for CMOS output products.
CD
Figure 8
Figure 7
4.
3.
VDD
V
*1
VDD
VDD
S-809xxC OUT
Series
VSS CD
A
VDS
P.G.
V
S-809xxC OUT
Series
R
100 kΩ
Oscilloscope
VSS
CD
*1. R is unnecessary for CMOS output products.
Figure 9
Figure 10
5.
VDS
V
VDD
VDD
V
S-809xxC OUT
Series
VSS
A
CD
Figure 11
10
Seiko Instruments Inc.
ULTRA-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR WITH DELAY CIRCUIT (EXTERNAL DELAY TIME SETTING)
Rev.3.3_00
S-809xxC Series
„ Timing Chart
1. Nch Open-drain Output Products
VDD
Release voltage (+VDET)
Detection voltage (−VDET)
Hysteresis width
(VHYS)
Minimum operating voltage
VSS
R
100 kΩ
VDD
CD OUT
VSS
VDD
V
Output from the OUT pin
VSS
tD
Figure 12
2. CMOS Output Products
VDD
Release voltage (+VDET)
Detection voltage (−VDET)
Hysteresis width
(VHYS)
Minimum operating voltage
VSS
VDD
CD OUT
VSS
V
VDD
Output from the OUT pin
VSS
tD
Remark For values of VDD less than minimum operating voltage, values of OUT pin output is free of the
shaded region.
Figure 13
Seiko Instruments Inc.
11
ULTRA-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR WITH DELAY CIRCUIT (EXTERNAL DELAY TIME SETTING)
Rev.3.3_00
S-809xxC Series
„ Operation
1. Basic Operation: CMOS Output (Active Low)
1-1. When the power supply voltage (VDD) is higher than the release voltage (+VDET), the Nch transistor is
OFF and the Pch transistor is ON to provide VDD (high) at the output. Since the Nch transistor N1 in
(RB + RC) • VDD
.
Figure 14 is OFF, the comparator input voltage is
RA + RB + RC
1-2. When the VDD goes below +VDET, the output provides the VDD level, as long as the VDD remains above
the detection voltage −VDET. When the VDD falls below −VDET (point A in Figure 15), the Nch
transistor becomes ON, the Pch transistor becomes OFF, and the VSS level appears at the output. At
this time the Nch transistor N1 in Figure 14 becomes ON, the comparator input voltage is changed to
RB • VDD
.
RA + RB
1-3. When the VDD falls below the minimum operating voltage, the output becomes undefined, or goes to
the VDD when the output is pulled up to the VDD.
1-4. The VSS level appears when the VDD rises above the minimum operating voltage. The VSS level still
appears even when the VDD surpasses −VDET, as long as it does not exceed the release voltage
+VDET.
1-5. When VDD rises above +VDET (point B in Figure 15), the Nch transistor becomes OFF, and the Pch
transistor becomes ON, and VDD appears at the output after the delay time (tD) counted by the delay
circuit.
VDD
*1
RA
*1
+
Pch
Delay
circuit
−
OUT
*1
RB
VREF
Nch
*1
RC
VSS
N1
CD
CD
*1. Parasitic diode
Figure 14 Operation 1
12
Seiko Instruments Inc.
ULTRA-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR WITH DELAY CIRCUIT (EXTERNAL DELAY TIME SETTING)
Rev.3.3_00
S-809xxC Series
(1) (2)
(3) (4) (5)
VDD
B
Hysteresis width (VHYS)
Release volatage (+VDET)
Detection voltage (−VDET)
A
Minimum operating voltage
VSS
VDD
Output from OUT pin
VSS
tD
Figure 15 Operation 2
2. Delay Circuit
The delay circuit delays the output signal from the time at which the power voltage (VDD) exceeds the
release voltage (+VDET) when VDD is turned on. The output signal is not delayed when the VDD goes below
the detection voltage (−VDET) (Refer to Figure 15). The delay time (tD) is determined by the time constant
of the built-in constant current (approx. 100 nA ) and the attached external capacitor (CD), and calculated
from the following equation.
tD (ms)=Delay coefficient×CD (nF)
Delay coefficient: (25°C)
Detection voltage −VDET ≤ 1.4 V
Min. 0.57, Typ. 0.77, Max. 0.96
Detection voltage −VDET ≥ 1.5 V
Nch open-drain output products: Min. 4.3,
Typ. 5.7,
Max. 7.2
CMOS output products:
Min. 3.8,
Typ. 5.1,
Max. 6.4
Caution 1. When the CD pin is open, a double pulse shown in Figure 16 may appear at release. To
avoid the double pulse, attach 20 pF or larger capacitor to the CD pin. Do not apply
voltage to the CD pin.
VOUT
time
Figure 16
2. Print circuit board layout should be made in such a way that no current flows into or
flows from the CD pin since the impedance of the CD pin is high, otherwise correct
delay time cannot be provided.
3. There is no limit for the capacitance of the external capacitor (CD) as long as the leakage
current of the capacitor can be ignored against the built-in constant current value.
Leakage current causes deviation in delay time. When the leakage current is larger
than the built-in constant current, no release takes place.
Seiko Instruments Inc.
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ULTRA-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR WITH DELAY CIRCUIT (EXTERNAL DELAY TIME SETTING)
Rev.3.3_00
S-809xxC Series
3. Other characteristics
3-1. Temperature Characteristic of Detection Voltage
The shaded area in Figure 17 shows the temperature characteristics of the detection voltage.
−VDET [V]
+0.945mV/°C
−VDET25*1
−0.945 mV/°C
−40
25
85
Ta [°C]
*1. −VDET25 is an actual detection voltage value at 25 °C.
Figure 17 Temperature Characteristic of Detection Voltage (Example forS-80927C)
3-2. Temperature Characteristics of Release Voltage
Δ + VDET
for the release voltage is calculated by the temperature
ΔTa
Δ − VDET
coefficient of the detection voltage
as follows:
ΔTa
Δ + VDET
+ VDET Δ − VDET
×
=
ΔTa
− VDET
ΔTa
The temperature coefficients for the release voltage and the detection voltage have the same sign
consequently.
The temperature coefficient
3-3. Temperature Characteristics of Hysteresis Voltage
The temperature characteristics for the hysteresis voltage is expressed as
calculated as follows:
Δ + VDET Δ − VDET
V
Δ − VDET
−
= HYS ×
ΔTa
ΔTa
− VDET
ΔTa
14
Seiko Instruments Inc.
Δ + VDET Δ − VDET
and is
−
ΔTa
ΔTa
ULTRA-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR WITH DELAY CIRCUIT (EXTERNAL DELAY TIME SETTING)
Rev.3.3_00
S-809xxC Series
„ Standard Circuit
*1
R
100 kΩ
VDD
CD
*2
CD
OUT
VSS
*1. R is unnecessary for CMOS output products.
*2. The delay capacitor (CD) should be connected directly to the CD pin and to the VSS pin.
Figure 18
Caution
The above connection diagram and constant will not guarantees successful operation.
Perform through evaluation using the actual application to set the constant.
„ Technical Terms
1. Detection Voltage (−VDET), Release Voltage (+VDET)
The detection voltage (−VDET) is a voltage at which the output turns to low. This detection voltage varies
slightly among products of the same specification. The variation of detection voltage between the
specified minimum (−VDET) Min. and maximum (−VDET) Max. is called the detection voltage range (Refer to
Figure 19).
Example: For the S-80927CN, detection voltage lies in the range of 2.646≤(−VDET) ≤ 2.754.
This means that some S-80927CNs have 2.646 V for −VDET and some have 2.754 V.
The release voltage (+VDET) is a voltage at which the output turns to high. This release voltage varies
slightly among products of the same specification. The variation of release voltage between the specified
minimum (+VDET) Min. and maximum (+VDET) Max. is called the release voltage range (Refer to Figure 20).
The range is calculated from the actual detection voltage (−VDET) of a product and is expressed by
−VDET×1.03≤+VDET≤−VDET×1.08 for S-80913 to S-80914, and by −VDET×1.03≤+VDET≤−VDET ×1.07 for S80915 to S-80960.
Example: For the S-80927CN, the release voltage lies in the range of 2.725≤(+VDET)≤ 2.947.
This means that some S-80927CNs have 2.725 V for +VDET and some have 2.947 V.
Seiko Instruments Inc.
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ULTRA-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR WITH DELAY CIRCUIT (EXTERNAL DELAY TIME SETTING)
Rev.3.3_00
S-809xxC Series
VDD
VDD
Detection voltage
Release voltage
(+VDET) Max.
(−VDET) Max.
Detection voltage
range
(−VDET) Min.
Release
voltage range
(+VDET) Min.
OUT
OUT
Delay time
Figure 19 Detection Voltage (CMOS output products)
Figure 20 Release Voltage (CMOS output products)
Remark Although the detection voltage and release voltage overlap in the range of 2.725 V to 2.754 V,
+VDET is always larger than −VDET.
2. Hysteresis Width (VHYS)
Hysteresis width is the voltage difference between the detection voltage and the release voltage (The
voltage at point B−The voltage at point A=VHYS in Figure 15). The existence of the hysteresis width avoids
malfunction caused by noise on input signal.
3. Delay Time (tD)
Delay time is a time internally measured from the instant at which input voltage to the VDD pin exceeds
the release voltage (+VDET) to the point at which the output of the OUT pin inverts. The delay time
changes according to the external capacitor (CD).
V
VDD
+VDET
OUT
tD
Figure 21
4. Through-type Current
The through-type current refers to the current that flows instantaneously at the time of detection and
release of a voltage detector. The through-type current is large in CMOS output products, and small in Nch
open-drain output products.
16
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ULTRA-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR WITH DELAY CIRCUIT (EXTERNAL DELAY TIME SETTING)
Rev.3.3_00
S-809xxC Series
5. Oscillation
In applications where a resistor is connected to the voltage detector input (Figure 22), taking a CMOS
active low product for example, the through-type current, which is generated when the output goes from
low to high (release) causes a voltage drop equal to [through-type current] × [input resistance] across the
resistor. When the input voltage drops below the detection voltage (−VDET) as a result, the output voltage
goes to low level. In this state, the through-type current stops and its resultant voltage drop disappears,
and the output goes from low to high. The through-type current again generated, a voltage drop appears,
and repeatiing the process finally induces oscillation.
VDD
RA
VIN
S-809xxCL
OUT
RB
VSS
Figure 22 Example for Bad Implementation of Input Voltage Divider (CMOS Output Products)
„ Precautions
• Do not apply an electrostatic discharge to this IC that exceeds the performance ratings of the built-in
electrostatic protection circuit.
• In CMOS output products of the S-809xxC series, the through-type current flows at the detection and the
release. If the input impedance is high, oscillation may occur due to the voltage drop by the through-type
current during releasing.
• When designing for mass production using an application circuit described herein, the product deviation
and temperature characteristics should be taken into consideration. SII shall not bear any responsibility
for the patents on the circuits described herein.
• SII claims no responsibility for any and all disputes arising out of or in connection with any infringement of
the products including this IC upon patents owned by a third party.
Seiko Instruments Inc.
17
ULTRA-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR WITH DELAY CIRCUIT (EXTERNAL DELAY TIME SETTING)
Rev.3.3_00
S-809xxC Series
„ Characteristics (Typical Data)
1. Detection Voltage (VDET) - Temperature (Ta)
S-80914CN
S-80913CN
1.50
1.60
1.45
1.55
+V DET
+V DET
1.50
VDET(V)
VDET(V)
1.40
1.45
1.35
1.40
1.30
-VDET
1.25
-VDET
1.35
1.30
1.20
-40
-20
0
20
40
60
-40
80
-20
0
40
60
80
40
60
80
40
60
80
40
60
80
S-80960CN
S-80915CN
1.60
6.40
1.55
6.30
+VDET
+VDET
6.20
VDET(V)
VDET (V)
20
Ta (°C)
Ta (°C)
1.50
1.45
-V DET
6.10
6.00
-V DET
5.90
1.40
-40
-20
0
20
Ta (°C)
40
60
5.80
80
-40
-20
0
20
Ta (°C)
2. Hysteresis Voltage Width (VHYS) - Temperature (Ta)
S-80914CN
8
8
7
7
6
6
VHYS (%)
V HYS (%)
S-80913CN
5
4
4
3
3
-40
-20
0
20
Ta (°C)
40
60
-20
0
20
Ta (°C)
S-80960CN
8
8
7
7
V HYS (%)
V HYS (%)
-40
80
S-80915CN
6
5
6
5
4
4
-40
18
5
-20
0
20
Ta (°C)
40
60
80
-40
Seiko Instruments Inc.
-20
0
20
Ta (°C)
ULTRA-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR WITH DELAY CIRCUIT (EXTERNAL DELAY TIME SETTING)
Rev.3.3_00
S-809xxC Series
3. Current Consumption (ISS) - Input Voltage (VDD)
S-80913CL
3.0
S-80914CL
3.0
16 μA
2.5
2.0
1.5
1.0
0.5
Ta=25°C
18 μA
2.5
ISS (μ A)
ISS ( μA)
Ta=25°C
2.0
1.5
1.0
0.5
0.0
0.0
0
2
4
6
8
10
12
0
2
4
VDD (V)
S-80915CL
3.0
1.0
2.0
1.5
1.0
0.5
0.5
0.0
0.0
4
6
12
13 μA
2.5
1.5
2
10
Ta=25°C
3.0
2.0
0
8
S-80960CL
ISS (μA)
ISS (μ A)
Ta=25°C
3.4 μA
2.5
6
VDD (V)
8
10
0
12
2
4
6
8
10
12
VDD (V)
VDD (V)
4. Current Consumption (ISS) - Temperature (Ta)
VDD =2.0V
S-80914CN
2.0
2.0
1.5
1.5
ISS (μ A)
ISS (μ A)
S-80913CN
1.0
0.5
VDD =2.0V
1.0
0.5
0.0
0.0
-40
-20
0
20
40
60
80
-40
-20
0
Ta (°C)
S-80915CN
VDD =3.5V
40
S-80960CN
2.0
2.0
1.5
1.5
ISS (μ A)
ISS (μ A)
20
60
80
Ta (°C)
1.0
0.5
VDD =7.5V
1.0
0.5
0.0
0.0
-40
-20
0
20
40
60
80
-40
Ta (°C)
-20
0
20
40
60
80
Ta (°C)
Seiko Instruments Inc.
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ULTRA-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR WITH DELAY CIRCUIT (EXTERNAL DELAY TIME SETTING)
Rev.3.3_00
S-809xxC Series
5. Nch Transistor Output Current (IOUT) - VDS
S-80915CL
Ta=25°C
Ta=25ºC
25
45
40
35
30
25
20
15
10
5
0
6.0V
8.4V
20
IOUT (mA)
IOUT(mA)
S-80960CL/CN
6. Pch Transistor Output Current (IOUT) - VDS
4.8V
3.6V
7.2V
15
6.0V
10
2.4V
4.8V
3.6V
5
VDD=1.2V
VDD =2.4V
0
0
1
2
3
4
0
5
2
4
6
8
10
V DS (V)
VDS (V)
7. Nch Transistor Output Current (IOUT) - Input Voltage(VDD)
S-80914CL/CN
S-80960CL
VDS=0.5V
Ta=-40°C
3.0
2.5
IOUT (mA)
25°C
IOUT (mA)
Ta=-40°C
20
2.0
1.5
1.0
25°C
15
10
5
85°C
0.5
VDS=0.5V
25
3.5
85°C
0
0.0
0
0.5
1
1.5
VDD (V)
0
2
2
4
6
8
V DD (V)
10
8. Pch Transistor Output Current (IOUT) - Input Voltage(VDD)
S-80913CL
S-80915CL
VDS=0.5V
3.0
2.5
2.0
25°C
1.5
1.0
0.5
4
3
2
0
0
0.5
1
1.5
2
2.5
25°C
85°C
1
85°C
0.0
Ta=-40°C
5
Ta=-40°C
IOUT (mA)
IOUT (mA)
VDS=0.5V
6
3
0
2
4
6
8
10
12
VDD (V)
VDD (V)
9. Minimum Operating Voltage - Input Voltage(VDD)
S-80913CN
Pull-up VDD: 100kΩ
2.0
S-80915CN
1.5
1.5
Ta=-40°C
VOUT(V)
VOUT(V)
Pull-up VDD: 100kΩ
2.0
1.0
25°C
0.5
Ta=-40°C
1.0
25°C
0.5
85°C
85°C
0.0
0.0
0
20
0.5
1
VDD (V)
1.5
2
0
Seiko Instruments Inc.
0.5
1
V DD (V)
1.5
2
ULTRA-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR WITH DELAY CIRCUIT (EXTERNAL DELAY TIME SETTING)
Rev.3.3_00
S-809xxC Series
10. Dynamic Response - COUT (CD pin; open)
S-80913CL
Ta=25°C
S-80913CN
Response time (ms)
Response time (ms)
tpHL
0.1
0.01
tpLH
tpLH
1
tpHL
0.1
0.01
0.001
0.00001 0.0001
0.001
0.01
0.00001 0.0001
0.1
S-80914CL
Ta=25°C
Response time (ms)
Response time (ms)
0.1
tpHL
0.01
tpLH
Ta=25°C
tpLH
1
tpHL
0.1
0.01
0.00001 0.0001
0.001
0.01
0.1
0.00001 0.0001
Load capacitance (μF)
S-80915CL
0.001
0.01
0.1
Load capacitance (μF)
Ta=25°C
S-80915CN
Ta=25°C
10
1
tpHL
Response time (ms)
Response time (ms)
0.1
10
0.001
0.1
0.01
tpLH
tpLH
1
tpHL
0.1
0.01
0.001
0.0001
0.001
0.01
0.00001
0.1
S-80960CL
0.0001
0.001
0.01
0.1
Load capacitance (μF)
Load capacitance (μF)
Ta=25°C
S-80960CN
Ta=25°C
10
1
tpHL
Response time (ms)
Response time (ms)
0.01
S-80914CN
1
0.1
tpLH
0.01
tpLH
1
tpHL
0.1
0.01
0.001
0.00001
0.001
Load capacitance (μF)
Load capacitance (μF)
0.00001
Ta=25°C
10
1
0.0001
0.001
0.01
0.1
0.00001
0.0001
0.001
0.01
0.1
Load capacitance (μF)
Load capacitance (μF)
Seiko Instruments Inc.
21
ULTRA-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR WITH DELAY CIRCUIT (EXTERNAL DELAY TIME SETTING)
Rev.3.3_00
S-809xxC Series
1 μs
1 μs
VIH
*1
VDD
*1
VDD
V
Input voltage
R
100 kΩ
OUT
S-809xxC
Series
COUT
VSS
*2
VIL
tpHL
V
CD
tpLH
VDD
VDD×90 %
Output voltage
VDD×10 %
*1. VIH=10 V
*2. VIL=0.7 V
*1. R is unnecessary for CMOS output products.
Figure 23 Measurement Condition for Response Time
Figure 24 Measurement Circuit for Response Time
Caution The above connection diagram and constant will not guarantees successful operation.
Perform through evaluation using the actual application to set the constant.
11. Delay Time - CD Pin Capacitance(CD) ( No output pin capacitance)
S-80913CN
Ta=25°C
1000
S-80915CN
10
100
td (ms)
1000
td (ms)
100
1
Ta=25°C
10000
10
0.1
1
0.01
0.1
0.01
0.1
1
10
100
1000
0.01
CD (nF)
0.1
1
10
100
1000
CD (nF)
12. Delay Time - Temperature(Ta)
S-80913CN
CD=4.7(nF)
40
6
30
4
CD=4.7(nF)
50
8
2
20
10
0
-40
-20
0
20
Ta (°C)
22
S-80915CN
td (ms)
td (ms)
10
40
60
80
0
-40
-20
0
20
Ta (°C)
Seiko Instruments Inc.
40
60
80
ULTRA-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR WITH DELAY CIRCUIT (EXTERNAL DELAY TIME SETTING)
Rev.3.3_00
S-809xxC Series
1 μs
VIH*1
VDD
VDD
Input voltage
VIL *2
S-809
V
tD
Ouput voltage
OUT
Series
VSS
VDD×90 %
R
100 kΩ
CD
CD
V
VSS
*1. VIH=10V
*2. VIL=0.7V
Figure 25 Measuring Conditions of Delay Time
Figure 26 Measurement Circuit for Delay Time
Caution The above connection diagram and constant will not guarantees successful operation.
Perform through evaluation using the actual application to set the constant.
„ Application Circuit Examples
1. Microcomputer Reset Circuits
If the power supply voltage to a microcomputer falls below the specified level, an unspecified operation
may be performed or the contents of the memory register may be lost. When power supply voltage
returns to normal, the microcomputer needs to be initialized before normal operations can be done.
Reset circuits protect microcomputers in the event of current being momentarily switched off or lowered.
Reset circuits shown in Figures 27 to 28 can be easily constructed with the help of the S-809xxC Series
that has a low operating voltage, a high-precision detection voltage, hysteresis and the reset circuits.
VDD1
VDD2
VDD
S-809xxCN
S-809xxCL
Microcomputer
Microcomputer
VSS
VSS
Only for Nch open-drain products.
Figure 27 Example for Reset Circuits(S-809xxCL)
Figure 28 Example for Reset Circuits(S-809xxCN)
Caution The above connection diagram and constant will not guarantees successful operation.
Perform through evaluation using the actual application to set the constant.
Seiko Instruments Inc.
23
ULTRA-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR WITH DELAY CIRCUIT (EXTERNAL DELAY TIME SETTING)
Rev.3.3_00
S-809xxC Series
2. Change of Detection Voltage
In Nch open-drain output products of the S-809xxC Series, detection voltage can be changed using
resistance dividers or diodes as shown in Figures 29 to 30. In Figure 29, hysteresis width also changes.
VDD
VDD
RA
Vf1
*1
(RA≤75 kΩ)
S809xxCN
VIN
+
RB
−
Vf2
VIN
OUT
S809xxCN
OUT
(Only for Nch
open-drain
products)
(Only for Nch
open-drain
products)
VSS
VSS
RA + RB
• − VDET
RB
RA + RB
Hysteresis width =
• VHYS
RB
Detection voltage =
Detection voltage=Vf1+Vf2+(−VDET)
*1. RA should be 75 kΩ or less tp prevent oscillation.
Caution
If RA and RB are large, the hysteresis
width may also be larger than the value
given by the above equation due to
through- type current (which flows
slightly in an Nch open-drain products).
Figure 29
Figure 30
Caution The above connection diagram and constant will not guarantees successful operation.
Perform through evaluation using the actual application to set the constant.
24
Seiko Instruments Inc.
2.0±0.2
1.3±0.2
4
3
0.05
+0.1
0.3 -0.05
+0.1
0.16 -0.06
2
1
+0.1
0.4 -0.05
No. NP004-A-P-SD-1.1
TITLE
SC82AB-A-PKG Dimensions
NP004-A-P-SD-1.1
No.
SCALE
UNIT
mm
Seiko Instruments Inc.
+0.1
ø1.5 -0
4.0±0.1
2.0±0.05
1.1±0.1
4.0±0.1
0.2±0.05
ø1.05±0.1
(0.7)
2.2±0.2
2
1
3
4
Feed direction
No. NP004-A-C-SD-3.0
TITLE
SC82AB-A-Carrier Tape
No.
NP004-A-C-SD-3.0
SCALE
UNIT
mm
Seiko Instruments Inc.
4.0±0.1
2.0±0.1
ø1.5
1.1±0.1
+0.1
-0
4.0±0.1
0.2±0.05
ø1.05±0.1
2.3±0.15
2
1
3
4
Feed direction
No. NP004-A-C-S1-2.0
TITLE
SC82AB-A-Carrier Tape
No.
NP004-A-C-S1-2.0
SCALE
UNIT
mm
Seiko Instruments Inc.
12.5max.
9.0±0.3
Enlarged drawing in the central part
ø13±0.2
(60°)
(60°)
No. NP004-A-R-SD-1.1
TITLE
SC82AB-A-Reel
No.
NP004-A-R-SD-1.1
QTY.
SCALE
UNIT
mm
Seiko Instruments Inc.
3,000
2.9±0.2
1.9±0.2
4
5
1
2
+0.1
0.16 -0.06
3
0.95±0.1
0.4±0.1
No. MP005-A-P-SD-1.2
TITLE
No.
SOT235-A-PKG Dimensions
MP005-A-P-SD-1.2
SCALE
UNIT
mm
Seiko Instruments Inc.
4.0±0.1(10 pitches:40.0±0.2)
+0.1
ø1.5 -0
2.0±0.05
+0.2
ø1.0 -0
0.25±0.1
4.0±0.1
1.4±0.2
3.2±0.2
3 2 1
4
5
Feed direction
No. MP005-A-C-SD-2.1
TITLE
SOT235-A-Carrier Tape
No.
MP005-A-C-SD-2.1
SCALE
UNIT
mm
Seiko Instruments Inc.
12.5max.
9.0±0.3
Enlarged drawing in the central part
ø13±0.2
(60°)
(60°)
No. MP005-A-R-SD-1.1
SOT235-A-Reel
TITLE
No.
MP005-A-R-SD-1.1
SCALE
QTY.
UNIT
mm
Seiko Instruments Inc.
3,000
1.2±0.04
3
4
+0.05
0.08 -0.02
2
1
0.65
0.48±0.02
0.2±0.05
No. PF004-A-P-SD-4.0
TITLE
SNT-4A-A-PKG Dimensions
PF004-A-P-SD-4.0
No.
SCALE
UNIT
mm
Seiko Instruments Inc.
+0.1
ø1.5 -0
4.0±0.1
2.0±0.05
0.25±0.05
+0.1
5°
1.45±0.1
2
1
3
4
ø0.5 -0
4.0±0.1
0.65±0.05
Feed direction
No. PF004-A-C-SD-1.0
TITLE
SNT-4A-A-Carrier Tape
PF004-A-C-SD-1.0
No.
SCALE
UNIT
mm
Seiko Instruments Inc.
12.5max.
9.0±0.3
Enlarged drawing in the central part
ø13±0.2
(60°)
(60°)
No. PF004-A-R-SD-1.0
SNT-4A-A-Reel
TITLE
PF004-A-R-SD-1.0
No.
SCALE
UNIT
QTY.
mm
Seiko Instruments Inc.
5,000
0.52
1.16
0.52
0.3
0.35
0.3
Caution Making the wire pattern under the package is possible. However, note that the package
may be upraised due to the thickness made by the silk screen printing and of a solder
resist on the pattern because this package does not have the standoff.
No. PF004-A-L-SD-3.0
TITLE
SNT-4A-A-Land Recommendation
PF004-A-L-SD-3.0
No.
SCALE
UNIT
mm
Seiko Instruments Inc.
•
•
•
•
•
•
The information described herein is subject to change without notice.
Seiko Instruments Inc. is not responsible for any problems caused by circuits or diagrams described herein
whose related industrial properties, patents, or other rights belong to third parties. The application circuit
examples explain typical applications of the products, and do not guarantee the success of any specific
mass-production design.
When the products described herein are regulated products subject to the Wassenaar Arrangement or other
agreements, they may not be exported without authorization from the appropriate governmental authority.
Use of the information described herein for other purposes and/or reproduction or copying without the
express permission of Seiko Instruments Inc. is strictly prohibited.
The products described herein cannot be used as part of any device or equipment affecting the human
body, such as exercise equipment, medical equipment, security systems, gas equipment, or any apparatus
installed in airplanes and other vehicles, without prior written permission of Seiko Instruments Inc.
Although Seiko Instruments Inc. exerts the greatest possible effort to ensure high quality and reliability, the
failure or malfunction of semiconductor products may occur. The user of these products should therefore
give thorough consideration to safety design, including redundancy, fire-prevention measures, and
malfunction prevention, to prevent any accidents, fires, or community damage that may ensue.