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Fairchild |
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
Description
The KA75250/KA75270/KA75290/KA75310/KA75330/
KA75360/KA75390/KA75420/KA75450 prevents the error
of system from supply voltage below normal voltage level at
the time the power on and instantaneous power off in
systems.
TO-92
1
SOT-89
1
1. Input 2. GND 3. Output
Internal Block Diagram
INPUT 1
1:TO-92
3:SOT-89
GND 2
2:TO-92
2:SOT-89
VREF
©2002 Fairchild Semiconductor Corporation
3 OUT
3:TO-92
1:SOT-89
Rev. 1.0.3
KA75XXX
Absolute Maximum Rating (TA=25°C)
Characteristic
Supply Voltage
Symbol
Vcc
Detecting Voltage
VDET
Hysteresis Voltage
Operating Temperature
Storage Temperature
Power Dissipation
TO-92
SOT-89
Detecting Voltage Temperature Coefficient
VHYS
TOPR
TSTG
PD
∆VDET/∆T
Value
0.3 ~ +15.0
2.5/2.7/2.9/3.1
3.3/3.6/3.9/4.2/4.5
50
-25 ~ +85
-50 ~ +150
200
500
RL = 200Ω, +0.01
Unit
V
V
mV
°C
°C
mW
%/°C
Electrical Characteristics (TA=25°C)
Characteristic
Symbol
Test Conditions
Min Typ Max Unit
Detecting Voltage
VDET
RL= 200Ω
VOL ≤ 0.4V
KA75250
KA75270
KA75290
KA75310
KA75330
KA75360
KA75390
KA75420
KA75450
2.35
2.55
2.75
2.95
3.15
3.45
3.75
4.05
4.35
2.5 2.65
2.7 2.85
2.9 3.05
3.1 3.25
3.3 3.45 V
3.6 3.75
3.9 4.05
4.2 4.35
4.5 4.65
Low Output Voltage
VOL RL = 200Ω
- - 0.4 V
Output Leakage Current
ILKG
VCC = 15V
- - 0.1 uA
Hysteresis Voltage
VHYS
RL = 200Ω
30 50 100 mV
Detecting Voltage Temperature
Coefficient
∆VDET/∆T RL = 200Ω
-
±0.01
- %/°C
Circuit Current(At On Time)
ICCL
VCC = VDET(MIN) -0.05V
-
300 500 uA
Circuit Current(At Off Time)
ICCH
VCC = 5.25V
- 30 50 uA
Threshold Operating Voltage
VTH(OPR) RL = 200Ω, VOL ≤ 0.4V
- 0.8 1.0 V
" L"± Transmission Delay Time
TOL RL = 1.0kΩ, CL= 100pF 0.6 10
- us
" H"± Transmission Delay Time
TOH
RL = 1.0kΩ, CL = 100pF
-
15 20 us
Output Current (At On Time)
IOLI
VCC = VDET(MIN) -0.05V,
TA = 25°C
10
20 30 mA
Output Current (At On Time)
IOLII
VCC = VDET(MIN) - 0.05V
TA = -25 ~ +85°C
8
16 30 mA
2
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