LTC4263
6
4263fe
TYPICAL PERFORMANCE CHARACTERISTICS
R
ON
 vs Temperature
Legacy Pin Current vs Voltage
Current Limit and Foldback
LED Pin Pulldown
vs Load Current
Classi cation Current Compliance
I
DD48
 DC Supply Current vs Supply
Voltage with Internal V
DD5
I
DD48
 DC Supply Current vs
Supply Voltage with V
DD5
 = 5.0V
I
DD5
 DC Supply Current
vs Supply Voltage
V
DD48
  V
OUT
0
0
50
150
200
250
30  35  40  45
450
4263 G03
100
5   10  15  20  25
50
300
350
400
I
LED
 LOAD CURRENT (mA)
0
0
1
3
4
4263 G04
2
10
20
30
40
50
T
A
 = 25癈
INTERNAL V
DD5
V
DD48
  V
OUT
 (V)
0
4
0
10
30
70
80
4263 G05
20
40
60
50
8
12
16
20
V
DD48
  V
SS
 = 48V
T
A
 = 25癈
V
DD48
 (V)
0
0
0.5
1.5
2.0
2.5
4263 G07
1.0
10
20
30
40
50
60
25k LOAD WITH
AC ENABLED
NO LOAD
T
A
 = 25癈
V
DD48
 (V)
0
0
0.2
0.6
0.8
1.0
1.2
4263 G08
0.4
10
20
30
40
50
60
25k LOAD WITH
AC ENABLED
NO LOAD
T
A
 = 25癈
V
DD5
4.0
3
2
0
1
2
4263 G09
1
4.5
5.0
5.5
6.0
25k LOAD WITH
AC ENABLED
NO LOAD
V
DD48
 = 48V
TEMPERATURE (癈)
40  20
1.0
1.4
2.0
0
40    60
4263 G16
1.2
1.8
1.6
20
80
100
V
LEGACY
 (V)
0
0
20
4
4263 G17
20
40
1
2
3
5
40
LEGACY MODE
FORCE POWER ON MODE
COMPLIANT MODE
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