X51638
Power-Up and Power-Down Timing
V
V
TRIP
TRIP
VCC
t
PURST
0 Volts
t
t
PURST
F
t
RPD
t
R
RESET
RESET Output Timing
Symbol
Parameter
Min.
Typ.
Max.
Units
Reset Trip Point Voltage, X51638-4.5A
Reset Trip Point Voltage, X51638
Reset Trip Point Voltage, X51638-2.7A
Reset Trip Point Voltage, X51638-2.7
Reset Trip Point Voltage, X51638-1.8
4.5
4.25
2.85
2.55
1.7
4.62
4.38
2.92
2.62
1.75
4.75
4.5
3.0
2.7
1.8
V
V
TRIP
V
Hysteresis
TRIP
(5)
V
t
20
mV
TH
(HIGH to LOW vs. LOW to HIGH V
voltage)
TRIP
Power-up Reset Timeout
500
800
1400
500
ms
ns
ms
ms
V
PURST
(5)
V
V
V
Detect to Reset/Output
Fall Time
t
t
t
CC
CC
CC
RPD
(5)
F
100
100
1
(5)
R
Rise Time
V
Reset Valid V
CC
RVALID
Notes: (5) This parameter is periodically sampled and not 100% tested.
14
ETC [ ETC ]
