Datasheet

LTM8042/LTM8042-1
5
80421fa
TYPICAL PERFORMANCE CHARACTERISTICS
Efficiency vs V
IN
, Buck-Boost
Mode, 3.6V at 1A LED String
Efficiency vs V
IN
, Buck-Boost
Mode, 6.8V at 1A LED String
Efficiency vs V
IN
, Buck-Boost
Mode, 10.1V at 1A LED String
Efficiency vs V
IN
, Buck Mode,
10.1V at 1A LED String
Efficiency vs V
IN
, Buck Mode,
13.4V at 1A LED String
Efficiency vs V
IN
, Buck Mode,
16.7V at 1A LED String
T
A
= 25°C, unless otherwise noted.
Maximum LED Current
vs Input Voltage, Boost Operation
LTM8042
Efficiency vs V
IN
, Buck-Boost
Mode, 13.4V at 1A LED String
V
IN
(V)
12
85
EFFICIENCY (%)
1816
93
95
94
80421 G10
14 20 262422 30 3228 34
86
88
90
87
89
92
91
V
IN
(V)
15
87
EFFICIENCY (%)
19
95
97
96
80421 G11
17 21 272523 3129 33
88
90
92
89
91
94
93
V
IN
(V)
19
87
EFFICIENCY (%)
95
97
96
80421 G12
21 272523 3129 33
88
90
92
89
91
94
93
V
IN
(V)
4
55
EFFICIENCY (%)
2624
85
80421 G13
20 22 28 301086 12141618
75
70
80
60
65
V
IN
(V)
8
70
EFFICIENCY (%)
262422
90
80421 G14
2010 12 14 16 18
85
75
80
V
IN
(V)
12
80
EFFICIENCY (%)
242322
87
80421 G15
2013 14 15 16 17 18 2119
85
86
81
82
83
84
V
IN
(V)
15
80
EFFICIENCY (%)
20
90
80421 G16
16 17 18 19
85
86
81
82
83
84
88
89
87
INPUT VOLTAGE (V)
0
0
MAXIMUM LED CURRENT (mA)
2015
1200
80421 G17
1052530
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