lt3590 Linear Technology Corporation, lt3590 Datasheet - Page 5

• Manufacturer Part Number: lt3590
• Description: 48v Buck Mode Led Driver In Sc70 And 2mm X 2mm Dfn
• Manufacturer: Linear Technology Corporation

TYPICAL PERFORMANCE CHARACTERISTICS
3.40
3.35
3.30
3.25
3.20
0.25
0.20
0.15
0.10
0.05
206
204
202
200
198
196
194
0
0
0
0
Sense Voltage (V
vs V
Sense Voltage (V
vs V
Internal Regulator
Line Regulation
I
10 WHITE LEDs
T
V
I
T
T
LED
LED
A
A
IN
A
= 25°C
= 25°C
= 25°C
= 48V
CTRL
IN
= 50mA
= 50mA
10
10
0.5
20
20
V
I
V
I
LOAD
LOAD
CTRL
CTRL
V
V
V
CTRL
IN
IN
30
30
1
= 0V
= 1mA
IN
IN
= 0V
= 3.3V
(V)
(V)
(V)
– V
– V
40
40
LED
LED
1.5
)
)
50
50
3590 G09
3590 G12
3590 G15
60
60
2
3.40
3.35
3.30
3.25
3.20
150
140
130
120
110
100
206
204
202
200
198
196
194
90
80
–50
0
0
Switching Current Limit
vs Duty Cycle
Sense Voltage (V
vs Temperature
Internal Regulator
Load Regulation
T
T
A
A
= 25°C
= 25°C
–25
0.2
20
0
TEMPERATURE (°C)
DUTY CYCLE (%)
0.4
40
V
I
V
I
I
LED
LED
LOAD
CTRL
CTRL
25
= 50mA
= 0V
IN
(mA)
= 0V
= 3.3V
50
0.6
60
– V
LED
75
)
0.8
80
100
3590 G10
3590 G16
3590 G13
100
125
1
1000
3.40
3.35
3.30
3.25
3.20
150
140
130
120
110
100
950
900
850
800
750
700
90
80
–50
–50
–50
Switching Current Limit
vs Temperature
Switching Frequency over
Temperature
Internal Regulator
V
V
REG
V
I
IN
LOAD
CTRL
–25
–25
–25
= 48V
vs Temperature
= 1mA
= 3.3V
0
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
25
25
25
50
50
50
LT3590
75
75
75
100
100
100
3590 G11
3590 G14
3590 G17
5
3590f
125
125
125