TECHNICAL DATA
Voltage Detector
FUNCTIONS
•
Detecting against error operations at the power ON/OFF
•
Resetting function for low voltage microprocessor
•
Checking low battery
•
Active Low
•
CMOS or open drain output (mask option)
•
Tolerance
±
2%
KK75Axx
BT75X X
TO-92
V
SS
V
CC
OUT
FEATURES
•
Low Power Consumption
•
Low Temperature Coefficient
•
Built-in Voltage Reference
•
Comparator Hysteresis
•
TO-92, SOT-23 packages are available
1
V
CC
V
SS
3
SOT-23
2
OUT
GENERAL DESCRIPTION
The
KK75AXX
series are the voltage detectors, consist of a high-precision voltage reference, a comparator with
precise thresholds and built-in hysteresis and an output driver.
ABSOLUTE MAXIMUM RATINGS (T
A
= 25
o
C)
Characteristic
Symbol
Value
Unit
Supply Voltage
Operating Temperature
Storage Temperature
Output Current
V
CC
T
opr
T
stg
I
O
-0.3 ~ +8.0
-10 ~ +70
-40 ~ +125
30
V
o
o
C
C
mA
1
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
KK75Axx
ELECTRICAL CHARACTERISTICS
1. OUTPUT VOLTAGE vs. SUPPLY VOLTAGE
BT75A25
2. OUTPUT LOW CURRENT vs. SUPPLY VOLTAGE
BT75A25
3
Output
Current:
I
OUT
(mA)
Output Voltage: V
OUT
(V)
Ta=25 C
2
O
10
V
OUT
=0.5V
8
6
4
2
0
Ta=25 C
O
1
0
0
1
2
3
Supply Voltage: V
CC
(V)
0
0.5 1.0 1.5 2.0 2.5
Supply Voltage: V
CC
(V)
3.0
3. NORMALIZED V
OL
vs. TEMPERATURE
1.6
NORMALIZED V
OH
vs. TEMPERATURE
1.06
1.04
1.4
V
CC
=2.5V, I
OH
=1.5mA
Output
Voltage, V
OL
(
V)
1.2
Output Voltage, V
OH
(V)
1.02
1
0.98
0.96
0.94
-50
V
CC
=5V, I
OH
=3.5mA
1
0.8
0.6
-50
+50
0
Temperature, T
A
(
O
C)
+100
V
CC
=3.5V, I
OH
=2.5mA
0
+50
Temperature, T
A
(
O
C)
+100
4. V
OL
vs. OUTPUT CURRENT
500
V
CC
=1.6V
800
V
CC
- V
OH
vs. OUTPUT CURRENT
V
CC
=2.5V
V
CC
=5V
700
600
V
CC
-
V
OH
(V)
V
CC
=3.5V
400
V
CC
=5V
Output
Voltage, V
OL
(
V)
300
500
400
300
200
200
100
100
0
0
0
2
4
6
Output Current, I
OL
(mA)
8
0
2
4
6
Output Current, I
OH
(mA)
8
3
KK75Axx
5. V
OL
vs. SUPPLY VOLTAGE
500
500
V
CC
- V
OH
vs. SUPPLY VOLTAGE
400
V
CC
- V
OH
(V)
400
I
OH
=4mA
Output Voltage, V
OL
(V)
300
300
I
OH
=2mA
I
OH
=1mA
200
I
OL
=4mA
200
I
OL
=2mA
100
I
OL
=500
µ
A
0
1.5
2.5
3.5
Supply Voltage, V
CC
(V)
4.5
I
OL
=1mA
100
I
OH
=500
µ
A
0
1.5
2
3.5
4
2.5
3
Supply Voltage, V
CC
(V)
4.5
5
6. SUPPLY CURRENT vs. TEMPERATURE
1.02
30
NORMALIZED THRESHOLD vs. TEMPERATURE
1.015
1.010
Supply Current, I
CC
(
m
A)
1.005
20
V
CC
=5V
V
CC
=2.0V
10
1.000
{1}
Threshold
0.995
0.99
0.985
0.98
-50
0
-50
+50
0
Temperature, T
A
(
O
C)
+100
+50
0
Temperature, T
A
(
O
C)
+100
ORDERING INFORMATION
BT75A XX XX - XX
PF = Pb Free
22 -> 2.20V
24 -> 2.40V
25 -> 2.55V
.
.
42 -> 4.20V
47 -> 4.70V
50 -> 5.00V
S = SOT-23
LS = TO-92 Straight (Bulk)
LF = TO-92 Form (Taping)
4
KK75Axx
PACKAGE DIMENSIONS
SOT-23
b
A
C
A
A
1
b
Dimension
min
0.75
0.25
0.38
0.50
1.20
2.10
2.80
0.85
0.40
0.09
mm
max
0.95
1.10
0.46
0.65
1.40
2.50
3.00
1.05
0.60
0.15
D
D
1
C
D
D
1
E
e
E
e
L
Q
A
1
e
L
Q
5
嵌入式系统
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