LTM8042IV#PBF Linear Technology, LTM8042IV#PBF Datasheet - Page 5

• Manufacturer Part Number: LTM8042IV#PBF
• Description: IC, LED DRVR, LGA56
• Manufacturer: Linear Technology

Specifications of LTM8042IV#PBF

• Led Driver Application: Display Backlighting, Automotive And Avionic Lighting
• No. Of Outputs: 1
• Output Current: 1A
• Input Voltage: 3V To 30V
• Dimming Control Type: PWM / Analog
• Topology: Boost (Step Up)

TYPICAL PERFORMANCE CHARACTERISTICS
LTM8042
95
94
93
92
91
90
89
88
87
86
85
85
80
75
70
65
60
55
12
4
Efficiency vs V
10.1V at 1A LED String
Efficiency vs V
Mode, 3.6V at 1A LED String
14
6
8
16
10
18
12 14 16 18
20
90
89
88
87
86
85
84
83
82
81
80
15
V
V
IN
IN
22
Efficiency vs V
Mode, 13.4V at 1A LED String
IN
IN
, Buck Mode,
, Buck-Boost
(V)
(V)
24
20 22
26
16
28
24
30 32
17
26
80421 G10
80421 G13
V
IN
IN
28 30
, Buck-Boost
(V)
34
18
19
97
96
95
94
93
92
91
90
89
88
87
90
85
80
75
70
80421 G16
15
8
Efficiency vs V
13.4V at 1A LED String
Efficiency vs V
Mode, 6.8V at 1A LED String
17
10 12 14 16 18
20
19
21
23
V
V
IN
IN
IN
IN
, Buck Mode,
, Buck-Boost
25
(V)
(V)
1200
1000
27
20
800
600
400
200
0
29
22
0
Maximum LED Current
vs Input Voltage, Boost Operation
31
24
80421 G11
80421 G14
T
5
A
33
26
= 25°C, unless otherwise noted.
LTM8042/LTM8042-1
INPUT VOLTAGE (V)
10
15
97
96
95
94
93
92
91
90
89
88
87
87
86
85
84
83
82
81
80
19
12
Efficiency vs V
16.7V at 1A LED String
Efficiency vs V
Mode, 10.1V at 1A LED String
20
13 14 15 16 17 18
21
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
25
23
80421 G17
30
25
V
IN
IN
V
IN
IN
, Buck Mode,
, Buck-Boost
(V)
27
(V)
19
29
20
21
31
22
80421 G12
80421 G15
80421fa
23
33
5
24