LTM4605 Просмотр технического описания (PDF) - Linear Technology
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LTM4605 Datasheet PDF : 24 Pages
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TYPICAL PERFORMANCE CHARACTERISTICS (Refer to Figure 16)
LTM4605
Efficiency vs Load Current
6VIN to 12VOUT
100
90
80
70
60
50
40
30
20
10
0
0.01
0.1
1
LOAD CURRENT (A)
CCM
DCM
BURST
10
4605 G01
Efficiency vs Load Current
3.3μH Inductor (CCM)
100
95
90
85
80
75
70
65
60
0
18VIN TO 5VOUT
12VIN TO 5VOUT
5VIN TO 5VOUT
3
6
9
12
LOAD CURRENT (A)
4605 G04
Transient Response from
6VIN to 12VOUT
IOUT
2A/DIV
Efficiency vs Load Current
12VIN to 12VOUT
100
90
80
70
60
50
40
30
20
10
0
0.01
0.1
1
LOAD CURRENT (A)
CCM
DCM
BURST
10
4605 G02
Efficiency vs Load Current
1.5μH Inductor (CCM)
100
95
90
85
80
75
70
65
60
55
50
0
18VIN TO 3.3VOUT
12VIN TO 3.3VOUT
5VIN TO 3.3VOUT
3
6
9
12
LOAD CURRENT (A)
4605 G05
Transient Response from
12VIN to 12VOUT
IOUT
2A/DIV
Efficiency vs Load Current
18VIN to 12VOUT
95
85
75
65
55
45
35
25
15
0.01
CCM
DCM
SKIP CYCLE
0.1
1
10
LOAD CURRENT (A)
100
4605 G03
Efficiency vs Load Current
1.5μH Inductor (CCM)
100
95
90
85
80
75
70
65
60
55
50
0
18VIN TO 2.5VOUT
12VIN TO 2.5VOUT
5VIN TO 2.5VOUT
3
6
9
12
LOAD CURRENT (A)
4605 G06
Transient Response from
18VIN to 12VOUT
IOUT
2A/DIV
VOUT
200mV/DIV
VOUT
200mV/DIV
VOUT
100mV/DIV
200μs/DIV
4605 G07
LOAD STEP: 0A TO 3A AT CCM
OUTPUT CAPS: 4x 22μF CERAMIC CAPS AND
2x 180μF ELECTROLYTIC CAPS
2x 15mΩ SENSING RESISTORS
200μs/DIV
4605 G08
LOAD STEP: 0A TO 3A AT CCM
OUTPUT CAPS: 4x 22μF CERAMIC CAPS AND
2x 180μF ELECTROLYTIC CAPS
2x 15mΩ SENSING RESISTORS
200μs/DIV
4605 G09
LOAD STEP: 0A TO 4A AT CCM
OUTPUT CAPS: 4x 22μF CERAMIC CAPS AND
2x 180μF ELECTROLYTIC CAPS
2x 15mΩ SENSING RESISTORS
4605fa
5
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