X4043-45 Datasheet, PDF (19/24 Pages) Intersil Corporation – 2.7V to 5.5V power supply operation

X4043, X4045
Power-Up and Power-Down Timing
V_CC
V_TRIP
0 Volts
t_PURST
t_PURST
t_F
t_R
t_RPD
RESET
(X4043)
RESET
(X4045)
RESET Output Timing
Symbol
Parameter
V_TRIP
t_PURST
t_RPD(8)
t_F(8)
t_R(8)
V_RVALID
t_WDO
t_RSP
t_RST
Reset trip point voltage, X4043/45-4.5A
Reset trip point voltage, X4043/45
Reset trip point voltage, X4043/45-2.7A
Reset trip point voltage, X4043/45-2.7
Power-up reset time out
V_CC detect to RESET/RESET
V_CC fall time
V_CC rise time
Reset valid V_CC
Watchdog time out period,
WD1 = 1, WD0 = 0
WD1 = 0, WD0 = 1
WD1 = 0, WD0 = 0
Watchdog Time Restart pulse width
Reset time out
Notes: (8) This parameter is periodically sampled and not 100% tested.
V_RVALID
V_RVALID
Min.
4.5
4.25
2.85
2.55
100
20
20
1
100
450
1
1
100
Typ.
4.62
4.38
2.92
2.62
200
10
200
600
1.4
200
Max.
4.75
4.5
3.0
2.7
400
20
300
800
2
400
Unit
V
ms
µs
mV/µs
mV/µs
V
ms
ms
sec
µs
ms
19
FN8118.3
December 9, 2015