TECHNICAL DATA
KK75Axx
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%
TO-92
BT75X X
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
V SS
3
SOT-23
1
V CC
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 (TA = 25oC)
Characteristic
Symbol
Value
Unit
Supply Voltage
VCC
-0.3 ~ +8.0
Operating Temperature
Topr
-10 ~ +70
o
V
C
Storage Temperature
Tstg
-40 ~ +125
o
C
Output Current
IO
30
mA
1
KK75Axx
ELECTRICAL CHARACTERISTICS
Characteristic
Symbol
Supply Voltage
(TA = 25oC, unless otherwise specified)
Test Conditions
Min
VCC
Detecting Voltage
Typ
Max
Unit
5.5
V
2.20
2.40
2.55
2.70
2.80
3.30
3.90
4.20
4.70
5.00
2.24
2.45
2.60
2.75
2.86
3.37
3.98
4.28
4.79
5.10
1.2
2.16
2.35
2.50
2.65
2.74
3.23
3.82
4.12
4.61
4.90
VDET
V
Supply Current
ICC
VCC = 5.0V, No Load
8
15
µA
Low Output Voltage
VOL
VCC = VDET–0.2V, IOL = 0.1mA
0.1
0.3
V
High Output Voltage
VOH
VCC = VDET+0.2V, IOH = 0.1mA
Hysteresis Voltage
VHYS
Detective Voltage Temperature
Coefficient
∆VDET
∆T × ∆VDET
VCC – 0.3V
-10oC < TA <70oC
V
2.0
%
± 0.02
%/oC
BLOCK DIAGRAM
CMOS OUTPUT
OPEN DRAIN OUTPUT
V CC
V CC
RA
VB
RA
VB
+
OUT
RB
OUT
+
-
RB
VREF
VREF
VSS
RC
VSS
RC
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:
VDET ( − ) =
RA + RB + RC
×VREF
RB + RC
The release voltage is defined as:
( )=
VDET +
RA + RB
× VREF
RB
The hysteresis width is:
VHYS = VDET ( + ) − VDET ( − )
2
KK75Axx
ELECTRICAL CHARACTERISTICS
1. OUTPUT VOLTAGE vs. SUPPLY VOLTAGE
BT75A25
2. OUTPUT LOW CURRENT vs. SUPPLY VOLTAGE
BT75A25
3
10
Output Current: IOUT (mA)
Output Voltage: VOUT (V)
Ta=25OC
2
1
VOUT=0.5V
8
6
O
Ta=25 C
4
2
0
0
0
1
3
2
0
Supply Voltage: VCC (V)
3. NORMALIZED VOL vs. TEMPERATURE
1.06
1.04
VCC=2.5V, IOH=1.5mA
Output Voltage, VOH (V)
1.4
Output Voltage, VOL ( V)
3.0
NORMALIZED VOH vs. TEMPERATURE
1.6
1.2
1
0.8
-50
+50
0
Temperature, TA (OC)
1.02
1
0.98
VCC=5V, IOH=3.5mA
0.96
VCC=3.5V, IOH=2.5mA
0.94
-50
0.6
+100
4. VOL vs. OUTPUT CURRENT
0
+50
Temperature, TA ( OC)
+100
V CC - VOH vs. OUTPUT CURRENT
500
800
VCC=1.6V
VCC=2.5V
VCC=5V
VCC=3.5V
700
400
VCC=5V
600
VCC - V OH (V)
Output Voltage, VOL ( V)
0.5 1.0 1.5 2.0 2.5
Supply Voltage: VCC (V)
300
200
500
400
300
200
100
100
0
0
0
2
4
6
Output Current, IOL (mA)
8
0
2
4
6
Output Current, IOH (mA)
8
3
KK75Axx
5. VOL vs. SUPPLY VOLTAGE
VCC - VOH vs. SUPPLY VOLTAGE
500
500
400
400
VCC - V OH (V)
Output Voltage, VOL (V)
IOH=4mA
300
IOL=4mA
200
IOL=2mA
100
300
IOH=2mA
IOH=1mA
200
100
IOL=1mA
IOH=500 µA
IOL=500µA
0
1.5
2.5
3.5
Supply Voltage, VCC (V)
0
1.5
4.5
6. SUPPLY CURRENT vs. TEMPERATURE
2
3.5
4
2.5
3
Supply Voltage, VCC (V)
5
4.5
NORMALIZED THRESHOLD vs. TEMPERATURE
1.02
1.015
30
1.005
20
VCC=5V
1.000
{1}
VCC=2.0V
Threshold
Supply Current, ICC (mA)
1.010
10
0
-50
+50
0
Temperature, T A (OC)
0.995
0.99
0.985
0.98
-50
+100
+50
0
Temperature, T A (OC)
+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
D
e
e
E
D1
L
Q
A1
mm
Dimension
A
min
0.75
max
0.95
A1
b
0.25
0.38
1.10
0.46
C
0.50
0.65
D
1.20
1.40
D1
E
2.10
2.80
2.50
3.00
e
0.85
1.05
L
0.40
0.60
Q
0.09
0.15
C
5
KK75Axx
TO-92
6