lt3595a Linear Technology Corporation, lt3595a Datasheet - Page 5

• Manufacturer Part Number: lt3595a
• Description: 16 Channel Buck Mode Led Driver
• Manufacturer: Linear Technology Corporation

TYPICAL PERFORMANCE CHARACTERISTICS
150
130
140
120
110
100
90
–50
Current Limit vs Temperature
–25
0
TEMPERATURE (°C)
50mA/DIV
20mA/DIV
50V/DIV
5V/DIV
V
25
SHDN
V
700
600
500
400
300
200
100
I
I
LED
SW
SW
0
0
50
Switch Saturation Voltage
(V
Transient Response
V
10 LEDS AT 20mA
IN
CESAT
= 45V
T = –40°C
75
20
)
T = 125°C
SWITCH CURRENT (mA)
100
3595A G09
40
100μs/DIV
125
T = 25°C
60
2.4
2.1
2.0
1.6
2.3
2.2
1.9
1.8
1.7
–50
80
Switching Frequency
vs Temperature
3595A G12
3595A G14
–25
100
0
TEMPERATURE (°C)
25
20mA/DIV
20mA/DIV
OPENLED
50
50V/DIV
5V/DIV
CH 1
CH 1
CH 2
100
V
I
I
LED
LED
80
40
20
60
SW
75
0
0
Schottky Forward Voltage Drop
OPENLED Waveforms
V
10 LEDS AT 20mA
IN
100
= 45V
T
3595A G10
A
SCHOTTKY FORWARD DROP (V)
0.2
= 25°C, unless otherwise noted.
125
T = 25°C
0.4
20μs/DIV
T = 125°C
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
–50
0.6
Schottky Leakage Current
vs Temperature
–25
T = –40°C
0.8
3595A G13
3595A G15
0
TEMPERATURE (°C)
1
25
LT3595A
50
V
V
IN
IN
= 24V
= 4.5V
75
V
IN
= 45V
100
3595A G11
3595af
5
125