Datasheet

LTM8042/LTM8042-1
6
80421fa
TYPICAL PERFORMANCE CHARACTERISTICS
LED Current vs CTL Voltage
Quiescent Current
vs Input Voltage, Open LED
Junction Temperature Rise
vs Load, Boost Operation,
8.3V at 1A LED String
Maximum LED Current
vs V
IN
, Buck Mode
Maximum LED Current vs Input
Voltage, Buck-Boost Mode
Junction Temperature Rise
vs Load, Boost Operation,
18.1V at 1A LED String
Junction Temperature Rise
vs Load, Boost Operation,
13.6V at 1A LED String
Junction Temperature Rise
vs Load, Boost Operation,
10.9V at 1A LED String
V
IN
(N)
0
0
LED CURRENT (mA)
2015
1000
80421 G18
1052530
900
200
100
800
400
600
300
500
700
3.8V AT 1A
7.4V AT 1A
10.9V AT 1A
14.5V AT 1A
18.1V AT 1A
21.4V AT 1A
24.8V AT 1A
INPUT VOLTAGE (V)
0
0
MAXIMUM LED CURRENT (mA)
20
1200
80421 G19
10 30 40
1000
200
800
400
600
7.4V AT 1A
10.9V AT 1A
14.5V AT 1A
18.1V AT 1A
21.4V AT 1A
24.8V AT 1A
28.2V AT 1A
ADJUST VOLTAGE (mV)
0
0
LED CURRENT SCALING (%)
800600
100
80421 G20
400200 1000 1200
20
80
40
60
INPUT VOLTAGE (V)
0
0
QUIESCENT CURRENT (mA)
2015
40
80421 G21
1052530
5
30
10
20
35
15
25
LED CURRENT (mA)
0
0
TEMPERATURE (°C)
600400
25
80421 G22
200 800 1000
20
15
5
10
5V
IN
LED CURRENT (mA)
0
0
TEMPERATURE (°C)
600400
20
80421 G23
200 800 1000
14
12
18
16
8
6
4
2
10
7V
IN
LED CURRENT (mA)
0
0
TEMPERATURE (°C)
600400
25
80421 G24
200 800 1000
20
15
5
10
8V
IN
LED CURRENT (mA)
0
0
TEMPERATURE (°C)
600400
35
80421 G25
200 800 1000
20
15
30
25
5
10
9V
IN
T
A
= 25°C, unless otherwise noted.
LTM8042