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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 C = 25 VCC = VDET(MIN) - 0.05V, T C = -30 ~ + 75
Î
ï ï 0.6 ï ï
7 8
300 30 0.8 10 15 17 16
Î 500 sA 50 sA 1.0 V ï sS 20 sS
27 mA 30 mA
100 mV
Î
KA75XXX
TEST CIRCUIT 1.
VOLTAGE DETECTOR
A1 1 V1 KA75XX 2
A2 RL 3 10u 10V + M
TEST CIRCUIT 2.
1 0.3u/ 100V KA75XX
RL 3 M 5.0V 10u/ 100V +
INPUT PULSE
2
TEST CIRCUIT 3.
VCC 1 KA75XX 3 LED 2 RL
KA75XXX
VOLTAGE DETECTOR
APPLICATION CIRCUIT
VCC 1 RESET VCC CPU GND
KA75XX
3
2
TRADEMARKS
The following are registered and unregistered trademarks Fairchild Semiconductor owns or is authorized to use and is not intended to be an exhaustive list of all such trademarks.
ACExTM CoolFETTM CROSSVOLTTM E2CMOSTM FACTTM FACT Quiet SeriesTM FAST® FASTrTM GTOTM HiSeCTM
DISCLAIMER
ISOPLANARTM MICROWIRETM POPTM PowerTrenchTM QSTM Quiet SeriesTM SuperSOTTM-3 SuperSOTTM-6 SuperSOTTM-8 TinyLogicTM
UHCTM VCXTM
FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.
LIFE SUPPORT POLICY FAIRCHILD'S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or 2. A critical component is any component of a life support device or system whose failure to perform can systems which, (a) are intended for surgical implant into be reasonably expected to cause the failure of the life the body, or (b) support or sustain life, or (c) whose support device or system, or to affect its safety or failure to perform when properly used in accordance with instructions for use provided in the labeling, can be effectiveness. reasonably expected to result in significant injury to the user. PRODUCT STATUS DEFINITIONS Definition of Terms Datasheet Identification Advance Information Product Status Formative or In Design Definition This datasheet contains the design specifications for product development. Specifications may change in any manner without notice. This datasheet contains preliminary data, and supplementary data will be published at a later date. Fairchild Semiconductor reserves the right to make changes at any time without notice in order to improve design. This datasheet contains final specifications. Fairchild Semiconductor reserves the right to make changes at any time without notice in order to improve design.
Preliminary
First Production
No Identification Needed
Full Production
Obsolete
Not In Production
This datasheet contains specifications on a product that has been discontinued by Fairchild semiconductor. The datasheet is printed for reference information only.