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