Datasheet



SLUS471D − JUNE 2002 − REVISED JANUARY 2008
6
www.ti.com
TYPICAL CHARACTERISTICS
Figure 1
LIVE INSERTION EVENT
VIN = −48 V
Power Applied
C
IRAMP
= 3900 pF
C
FLT
= 0.1 µF
C
LOAD
= 50 µF
EN (20 V/div.)
V
DRAIN
(20 V/div.)
I
LOAD
(500 mA/div.)
t − TIme − 1 ms/div
Figure 2
LIVE INSERTION EVENT
VIN = −80 V
I
LOAD
(500 mA/div.)
V
DRAIN
(50 V/div.)
EN (20 V/div.)
Power Applied
C
LOAD
= 100 µF
t − TIme − 1 ms/div
Figure 3
START-UP FROM ENABLE ASSERTION
I
LOAD
(1 A/div.)
V
DRAIN
50 V/div.
EN (5 V/div.)
I
RAMP
(5 V/div.)
C
LOAD
= 100 µF
EN driven from logic-
level signal, ref to −VIN
t − TIme − 1 ms/div
Figure 4
LOAD CURRENT RAMP PROFILES
C
FLT
= 0.33 µF
C
LOAD
= 600 µF
IRAMP (2 V/div.)
C
IRAMP
=
3900 pF
C
IRAMP
= .047 µF
I
LOAD
(500 mA/div.)
C
IRAMP
= .022 µF
t − TIme − 10 ms/div