KSI-2042-000
1
S7123SF
Bipolar Linear Integrated Circuit
Description
As Control Circuit of Battery-Backed Memory
As Measure Against Erroneous Operations at Power On-Off
As Resetting Function for the CPU-Mounted Equipment --- PC, Printer, VTR, Fax, C-TV etc.
As Measure Against System Runaway at Instantaneous Break of Power Supply etc.
Features
Current Consumption is Low (I
CC
L=300 Typ. I
CC
H=30 Typ.)
Resetting Output Minimum Guarantee Voltage is Low (0.8V Typ.)
Hysteresis Voltage is Provided (50 Typ.)
Ordering
Information
Type NO.
Marking
Package Code
S7123SF 723 SOT-23F
Outline Dimensions unit :
mm
S
S
e
e
m
m
i
i
c
c
o
o
n
n
d
d
u
u
c
c
t
t
o
o
r
r
PIN Connections
1. Out
2. Vcc
3. GND
0.
4
0.
05
0~0.
1
3
1
2
1.
90 BSC
2.
9
0.
1
0.
15
0.
05
2.40.1
0.
9
0.
1
1.60.1
2. Vcc
3. GND
1. OUT
Equivalent Circuit
KSI-2042-000
2
S7123SF
Absolute maximum ratings
(Ta=25
C)
Characteristic Symbol
Ratings
Unit
Supply voltage
V
CC
-0.3 ~ +15
V
Power Dissipation (Package Limitation)
P
D
* 300
Operating Temperature
T
opr
-30 ~ +75
Storage Temperature
T
stg
-55 ~ +150
* With PCB(88 Copper Area) at Glass Epoxy Board (t=1.7 , Area; 2020 )
Electrical Characteristics
(Ta=25
C)
Characteristic Symbol
Test
Circuit
Test Condition
Min.
Typ. Max.
Unit
Detecting voltage
V
S
1
R
L
=200 , V
OL
0.4V
2.15 2.3 2.45 V
Low Level Output voltage
V
OL
1
R
L
=200
- -
0.4
V
Output Leakage Current
I
OH
1
V
CC
=15V -
-
0.1
A
Hysteresis Voltage
V
S
1
R
L
=200
30 50 100
Detecting Voltage
Temperature Coefficient
V
S
/ T
1
R
L
=200
-
0.01
-
%/
Circuit current at on Time
I
CC
L 1
V
CC
= V
Smin
- 0.05V
-
300
500
A
Circuit current at off Time
I
CC
H 1
V
CC
=5.25V -
30
50
A
Threshold Operating Voltage
V
opr
1
R
L
=200 , V
OL
0.4V
- 0.8 - V
'L' Transmission Delay Time
t
P
HL 2
R
L
=1.0 , C
L
=100
- 10 -
'H' Transmission Delay Time
t
P
LH 2
R
L
=1.0 , C
L
=100
- 15 -
Output Current at on Time I
I
OL
I 1
V
CC
= V
Smin
- 0.05V
Ta = 25
20 - -
Output Current at on Time II
I
OL
II 1
V
CC
= V
Smin
- 0.05V
Ta = -30~+75
16 - -
Test Circuit 1 Test Circuit 2
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