Fairchild Semiconductor KA75250Z, KA75450Z, KA75420Z, KA75390Z, KA75310Z Datasheet
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KA75XXX
Voltage Detector
www.fairchildsemi.com
Features
• Detecting Against Error Operations At The Power On/off.
• Resetting Function For The Low Voltage Microprocessor.
• Checking Low Battery
Internal Block Diagram
Description
The KA75250/KA75270/KA75290/KA75310/KA75330/
KA75360/KA75390/KA75420/KA75450 prevents the error
of system from supply vo ltage belo w no rma l vol tage l evel at
the time the power on and instantaneous power off in
systems.
TO-92
1
SOT-89
1
1. Input 2. GND 3. Output
INPUT
INPUT
1:TO-92
1:TO-92
3:SOT-89
3:SOT-89
GND
GND
2:TO-92
2:TO-92
2:SOT-89
2:SOT-89
©2002 Fairchild Semiconductor Corporation
1
2
3
OUT
OUT
3:TO-92
3:TO-92
1:SOT-89
1:SOT-89
V
V
REF
REF
Rev. 1.0.3
KA75XXX
Absolute Maximum Rating (T
=25°°°°C)
A
Characteristic Symbol Value Unit
Supply Voltage Vcc 0.3 ~ +15.0 V
Detecting Voltage V
Hysteresis Voltage V
Operating Temperature T
Storage Temperature T
DET
HYS
OPR
STG
2.5/2.7/2.9/3.1
3.3/3.6/3.9/4.2/4.5
50 mV
-25 ~ +85 °C
-50 ~ +150 °C
Power Dissipation
TO-92
SOT-89
Detecting Voltage Temperature Coefficient ∆V
Electrical Characteristics (T
=25°°°°C)
A
P
D
/∆TR
DET
L
200
mW
500
= 200Ω, +0.01 %/°C
Characteristic Symbol Test Conditions Min Typ Max Unit
2.65
2.85
3.05
3.25
3.45
3.75
4.05
4.35
4.65
Detecting Voltage V
Low Output Voltage V
Output Leakage Current I
Hysteresis Voltage V
Detecting Voltage Temperature
Coefficient
∆V
Circuit Current(At On Time) I
Circuit Current(At Off Time) I
Threshold Operating Voltage V
TH(OPR)
" L"± Transmission Delay Time T
" H"± Transmission Delay Time T
Output Current (At On Time) I
Output Current (At On Time) I
RL= 200Ω
V
≤ 0.4V
OL
KA75250
KA75270
KA75290
KA75310
DET
KA75330
KA75360
KA75390
KA75420
KA75450
OL
LKG
HYS
DET
CCL
CCH
RL = 200Ω --0.4V
V
= 15V - - 0.1 uA
CC
RL = 200Ω 30 50 100 mV
/∆TRL = 200Ω - ±0.01 - %/°C
V
= V
CC
DET(MIN)
V
= 5.25V - 30 50 uA
CC
-0.05V - 300 500 uA
2.35
2.55
2.75
2.95
3.15
3.45
3.75
4.05
4.35
2.5
2.7
2.9
3.1
3.3
3.6
3.9
4.2
4.5
RL = 200Ω, VOL ≤ 0.4V - 0.8 1.0 V
OL
OH
OLI
OLII
RL = 1.0kΩ, CL= 100pF 0.6 10 - us
RL = 1.0kΩ, CL = 100pF - 15 20 us
V
= V
CC
DET(MIN)
T
= 25°C
A
V
= V
CC
DET(MIN)
T
= -25 ~ +85°C
A
-0.05V,
- 0.05V
10 20 30 mA
81630mA
V
V
2
Test Circuit 1.
KA75XXX
Test Circuit 2.
INPUT PULSE
INPUT PULSE
A1
A1
KA75XXX
KA75XXX
0.1u
0.1u
50V
50V
INPUT
INPUT
GND
GND
KA75XXX
KA75XXX
OUTPUT
OUTPUT
INPUT
INPUT
OUTPUT
OUTPUT
GND
GND
M
M
+
++
10u
10u
10V
10V
A2
A2
R
R
V1
V1
L
L
+
++
10u
10u
50V
50V
5V
5V
Test Circuit 3.
INPUT
INPUT
R
R
L
L
LED
LED
V
V
CC
CC
KA75XXX
KA75XXX
GND
GND
OUTPUT
OUTPUT
3
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