KK75Axx
ELECTRICAL CHARACTERISTICS
Characteristic
Supply Voltage
Symbol
V
CC
(T
A
= 25
o
C, unless otherwise specified)
Test Conditions
Min
1.2
2.16
2.35
2.50
2.65
2.74
3.23
3.82
4.12
4.61
4.90
V
CC
= 5.0V, No Load
V
CC
= V
DET
–0.2V, I
OL
= 0.1mA
V
CC
= V
DET
+0.2V, I
OH
= 0.1mA
-10 C < T
A
<70 C
o
o
Typ
Max
5.5
Unit
V
Detecting Voltage
V
DET
2.20
2.40
2.55
2.70
2.80
3.30
3.90
4.20
4.70
5.00
8
0.1
2.24
2.45
2.60
2.75
2.86
3.37
3.98
4.28
4.79
5.10
15
0.3
V
Supply Current
Low Output Voltage
High Output Voltage
Hysteresis Voltage
Detective Voltage Temperature
Coefficient
I
CC
V
OL
V
OH
V
HYS
∆
V
DET
∆
T
× ∆
V
DET
µA
V
V
%
%/
o
C
V
CC
– 0.3V
2.0
±
0.02
BLOCK DIAGRAM
CMOS OUTPUT
OPEN DRAIN OUTPUT
V
CC
V
CC
R
A
V
B
+
R
A
V
B
+
OUT
-
R
B
V
REF
OUT
R
B
-
V
SS
R
C
V
REF
V
SS
R
C
FUNCTIONAL DESCRIPTION
The
KK75AXX
series is the set of voltage detectors equipped with a high stability voltage reference which is
connected to the negative input of a comparator - denoted as V
REF
in block diagram.
When the voltage drop to the positive input of the comparator (V
B
) is high than V
REF
, V
OUT
goes high.
If V
CC
is decreased so that V
B
falls to a value less than V
REF
, the comparator output inverts from high to low, V
OUT
goes low.
The device has hysteresis to prevent the circuit from oscillation when V
B
≈
V
REF
.
If V
CC
falls below the minimum operating voltage, the output becomes undefined.
The detectable voltage is defined as:
VDET
(
−
)
=
RA
+
RB
+
RC
×
VREF
RB
+
RC
The release voltage is defined as:
RA
+
RB
×
VREF
RB
VDET
+
( )
=
The hysteresis width is:
VHYS
=
V
DET
(
+
)
−
VDET (
−
)
2
KODENSHI [ KODENSHI KOREA CORP. ]
