Datasheet

LTM8042/LTM8042-1
8
80421fa
TYPICAL PERFORMANCE CHARACTERISTICS
RUN Pin Current vs Voltage
Efficiency vs V
IN
, Boost Operation,
6.7V at 350mA LED String
Junction Temperature Rise
vs Load, Buck-Boost Mode,
10.9V at 1A LED String
Junction Temperature Rise
vs Load, Buck-Boost Mode,
13.6V at 1A LED String
Junction Temperature Rise
vs Load, Buck-Boost Mode,
15.5V at 350mA LED String
LTM8042-1
LED CURRENT (mA)
0
0
TEMPERATURE (°C)
600400
50
25
80421 G35
200 800 1000
10
5
20
35
30
45
40
15
12V
IN
LED CURRENT (mA)
0
0
TEMPERATURE (°C)
600400
60
80421 G36
200 800 1000
10
20
30
50
40
16V
IN
12V
IN
LED CURRENT (mA)
0
0
TEMPERATURE (°C)
200100 250150
25
80421 G37
50 300 350
5
10
20
15
12V
IN
RUN VOLTAGE (V)
0
0
RUN CURRENT (µA)
2010
160
80421 G38
30 40
20
60
40
80
140
120
100
LTM8042/LTM8042-1
T
A
= 25°C, unless otherwise noted.
LTM8042
Efficiency vs V
IN
, Boost Operation,
9.7V at 350mA LED String
Efficiency vs V
IN
, Boost Operation,
12.6V at 350mA LED String
V
IN
(V)
2
65
EFFICIENCY (%)
34
95
80421 G39
56
70
80
75
85
90
V
IN
(V)
2.5
65
EFFICIENCY (%)
4.5
95
80421 G40
6.5 8.5
70
80
75
85
90
V
IN
(V)
3
65
EFFICIENCY (%)
57
95
80421 G41
911
70
80
75
85
90