X80000 Datasheet, PDF (26/37 Pages) Intersil Corporation – Smart Power Plug Penta-Power Sequence Controller with Hot Swap

X80000, X80001
FET
turns ON
EN2 In
(from PWRGD)
t_DELAY1
V1GDO
Power Supply
#1 OUTPUT
(3.3V)
EN2
t_DELAY2
V2GDO
Power Supply
#2 OUTPUT
(2.5V)
EN3
t_DELAY3
V3GDO
Power Supply
#3 OUTPUT
(1.8V)
EN4
t_DELAY4
V4GDO
Power Supply
#4 OUTPUT
(1.2V)
100ms
500ms
1sec
5sec
Programmable
Delay
Power Supply
#1 turns ON
Programmable
Delay
100ms
500ms
1sec
5sec
Power Supply
#2 turns ON
Programmable
Delay
Programmable
Delay
RESET
Select t_DELAYx and t_RESET
via the 2-wire interface.
100ms
500ms
1sec
5sec
Power Supply
#3 turns ON
100ms
500ms
1sec
5sec
t_RESET
Power Supply
#4 turns ON
100ms
500ms
1sec
5sec
Programmable
Delay
FIGURE 34. PARALLEL SEQUENCING OF DC-DC SUPPLIES (TIMING)
26
FN8148.0
March 18, 2005