VOLTAGE DETECTOR - Fairchild
Description
KA75XXX
VOLTAGE DETECTOR
VOLTAGE DETECTOR
The KA75250/270/290/310/33/36/39/42/45 prevents error of system from supply voltage below normal voltage level at the time the power on and instantaneous power off in systems.
TO-92
FEATURES
• • • Detecting against error operations at the power ON/OFF.
Resetting function for the low voltage microprocessor.
Checking low battery 1.
Input 2.
GND 3.
Output
BLOCK DIAGRAM
ORDERING INFORMATION
VCC
æ
1
Device KA75250
PKG
Operating Temp.
3
OUT
è
KA75270 KA75290 KA75310 KA7533 KA7536 KA7539 TO-92 -30~ + 75
Î
VREF
+ -
KA7542 KA7545
GND
ç
2
Rev.
B
©1999 Fairchild Semiconductor Corporation
KA75XXX
ABSOLUTE MAXIMUM RATING (T A = 25Î)
Characteristic Supply Voltage Detecting Voltage Hysteresis Voltage Operating Temperature Storage Temperature Power Dissipation Detecting Voltage Temperature Coefficient Symbol VCC VDET VHYS T OPR T STG
VOLTAGE DETECTOR
Value 0.
3 ~ +15.
0 2.
5/2.
7/2.
9/3.
1 3.
3/3.
6/3.
9/4.
2/4.
5 50 - 30 ~ + 75 - 50 ~ + 150 200 RL = 200
Unit V V
LV /LT
DET
PD
`, ä0.
01
Î Î Mw /Î
mV
ELECTRICAL CHARACTERISTICS (T A = 25Î)
Characteristic Detecting Voltage Symbol VDET Test RL = 200 VOL 0.
4V
`
Conditions KA75250 KA75270 KA75290 KA75310 KA7533 KA7536 KA7539 KA7542 KA7545
Min 2.
35 2.
55 2.
75 2.
95 3.
15 3.
45 3.
75 4.
05 4.
35
Typ 2.
5 2.
7 2.
9 3.
1 3.
3 3.
6 3.
9 4.
2 4.
5
Max 2.
65 2.
85 3.
05 3.
25 3.
45 3.
75 4.
05 4.
35 4.
65 0.
4 0.
1
Unit V
Low Output Voltage Output Leakage Current Hysteresis Voltage Detecting Voltage Temperature Coefficient Circuit Current (at on time) Circuit Current (at off time) Threshold Operating Voltage “L” Transmission Delay Time “H” Transmission Delay Time Output Current (at on time I) Output Current (at on time II)
VOL ILKG VHYS
DET
RL = 200 RL RL
VCC = 15V
LV /LT
ICCL ICCH VTH(OPR) tOL tOH IOLI IOLII
` = 200` = 200` `, V 0.
4V = 1.
0K`, C = 100pF = 1.
0K`, C = 100pF
OL L L
ï ï
ï ï
sA
/
V
30
ä0.
01
50
VCC = VDET(MIN) - 0.
05V VCC = 5.
25V RL = 200 RL RL
VCC = VDET(MIN) - 0.
05V, T...
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