Datasheet

LTC4355
4
4355ff
For more information www.linear.com/LTC4355
typical perForMance characteristics
I
OUT
vs V
OUT
I
IN
vs V
IN
I
GATE
vs DV
SD
DV
GATE
vs I
GATE
Fault Output Low
vs Load Current
Fault Output Low
vs Temperature
FET Turn-Off Time
vs GATE Capacitance
FET Turn-Off Time
vs Initial Overdrive
FET Turn-Off Time
vs Final Overdrive
V
OUT
(V)
0
I
OUT
(mA)
1.0
1.5
80
0.5
0
20
40
60
2.0
4355 G01
V
OUT
= V
IN
V
IN
(V)
0
I
IN
(mA)
0.5
0.75
80
0.25
0
20
40
60
1.0
4355 G02
V
IN
= V
OUT
I
FLT
(mA)
0
V
FLT
(V)
0.1
0.2
15
0
5
10
0.3
4355 G05
C
GATE
(nF)
0
t
OFF
(ns)
300
400
500
40
4355 G07
200
100
0
10
20
20
50
V
GATE
< V
IN
+ 1V
∆V
SD
= 50mV –1V
V
INITIAL
(V)
0
t
PD
(ns)
300
400
500
0.8
4355 G08
200
100
0
0.2
0.4
0.6
1.0
V
IN
= 48V
∆V
SD
= V
INITIAL
–1V
V
FINAL
(V)
–1.0
t
PD
(ns)
1000
1500
2000
–0.2
4355 G09
500
0
–0.8
–0.6
–0.4
0
V
IN
= 48V
∆V
SD
= 50mV V
FINAL
V
SD
(mV)
–50
I
GATE
(µA)
20
0
150
40
60
0
50
100
–20
4355 G03
V
GATE
= 2.5V
I
GATE
(µA)
0
0
∆V
GATE
(V)
5
10
15
–5 –10 –15 –20
–25
4355 G04
V
IN
> 18V
V
IN
= 12V
V
IN
= 9V
TEMPERATURE (°C)
–50
V
FLT
(mV)
100
125
100
50
0
50
150
75
4355 G06
I
FLT
= 5mA