TL7702A Datasheet, PDF (9/10 Pages) Texas Instruments – SUPPLY-VOLTAGE SUPERVISORS

Input
TL7702A, TL7705A, TL7709A, TL7712A, TL7715A
SUPPLY-VOLTAGE SUPERVISORS
APPLICATION INFORMATION
SLVS028E – APRIL 1983 – REVISED JULY 1999
µA7805
INPUT OUTPUT
COMMON
CI
CO
8
7
VCC
SENSE
RESET ⁵
TL7705A
RESET
6
3 _CT
1
REF
GND
CT ⁴
0.1 µF
4.7 kΩ
G
4.7 kΩ
5V
25 kΩ
System RESET
S
Q1
2N3994
D
Figure 8. Eliminating Undefined States Using a P-Channel JFET
VCC
SENSE Input
10 kΩ
8
7
VCC
SENSE RESET
5
TL77xxA
2
6
RESIN RESET
3 _CT
CT
1
REF
GND
4
0.1 µF
750 Ω
2.7 kΩ
10 kΩ
Q1
2N4036
System RESET
1 kΩ
Figure 9. Eliminating Undefined States Using a pnp Transistor
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