DC1472A Linear Technology, DC1472A Datasheet - Page 17

• Manufacturer Part Number: DC1472A
• Description: BOARD DEMO LTM4618
• Manufacturer: Linear Technology
• Series: µModuler

Specifications of DC1472A

• Design Resources: LTM4618 Spice Model LTM4618 Gerber Files DC1472A Design Files DC1472A Schematic
• Main Purpose: DC/DC, Step Down
• Outputs And Type: 1, Non-Isolated
• Power - Output: -
• Voltage - Output: 4.5 ~ 26.5 V
• Current - Output: 6A
• Voltage - Input: 4.5 ~ 26.5 V
• Regulator Topology: Buck
• Frequency - Switching: 500kHz
• Board Type: Fully Populated
• Utilized Ic / Part: LTM4618
• Lead Free Status / Rohs Status: Not applicable / Not applicable
• Other names: DC1472; DC1472

APPLICATIONS INFORMATION
Table 2. 1.5V Output
DERATING CURVE
Figures 9, 11
Figures 9, 11
Figures 9, 11
Figures 10, 12
Figures 10, 12
Figures 10, 12
Table 3. 3.3V Output
DERATING CURVE
Figures 13, 15
Figures 13, 15
Figures 13, 15
Figures 14, 16
Figures 14, 16
Figures 14, 16
Heat Sink Used: 15 × 9 Version of Aavid #375424B000346
Table 4. Output Voltage Response vs Component Matrix (Refer to Figure 21) 0A to 3A Load Step
V
OUT
1.2
1.2
1.2
1.5
1.5
1.5
1.8
1.8
1.8
2.5
2.5
2.5
3.3
3.3
1
1
1
5
(V)
(CERAMIC)
22μF × 2
22μF × 2
22μF × 2
22μF × 2
22μF × 2
22μF × 2
22μF × 2
22μF × 2
22μF × 2
22μF × 2
22μF × 2
22μF × 2
22μF × 2
22μF × 2
22μF × 2
22μF × 2
22μF × 2
22μF × 2
C
IN
(BULK)
68μF
68μF
68μF
68μF
68μF
68μF
68μF
68μF
68μF
68μF
68μF
68μF
68μF
68μF
68μF
68μF
68μF
68μF
C
IN
V
12, 24
12, 24
12, 24
12, 24
12, 24
12, 24
V
5, 12
5, 12
5, 12
5, 12
5, 12
5, 12
IN
IN
(CERAMIC)
100μF × 4
100μF × 2
100μF × 4
100μF × 2
100μF × 3
100μF × 3
100μF × 4
100μF × 3
100μF × 4
100μF × 2
100μF × 2
(V)
(V)
100μF
100μF
100μF
100μF
100μF
100μF
100μF
C
OUT1
(BULK)
220μF
470μF
220μF
470μF
220μF
470μF
220μF
220μF
C
None
None
None
None
None
None
None
None
None
None
OUT2
POWER LOSS CURVE
Figure 7
Figure 7
Figure 7
Figure 7
Figure 7
Figure 7
POWER LOSS CURVE
Figure 8
Figure 8
Figure 8
Figure 8
Figure 8
Figure 8
COMP
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
(pF)
100
C2
47
47
47
47
47
22
47
47
FREQ
(kHz)
400
400
400
400
400
400
500
500
500
500
500
500
500
600
600
600
600
600
AIRFLOW (LFM)
0
200
400
0
200
400
AIRFLOW (LFM)
0
200
400
0
200
400
DROOP
(mV)
150
38
35
30
40
37
27
48
40
30
52
45
50
65
75
60
90
80
P-P DEVIATION
(mV)
104
100
130
150
120
180
160
300
76
70
60
80
74
54
96
80
60
90
HEAT SINK
None
None
None
BGA Heat Sink
BGA Heat Sink
BGA Heat Sink
HEAT SINK
None
None
None
BGA Heat Sink
BGA Heat Sink
BGA Heat Sink
RECOVERY
TIME (μs)
35
35
35
30
35
35
36
36
40
36
35
35
38
35
45
36
40
40
LTM4618
LOAD STEP
Θ
16
12.2
11.2
15.2
11.6
10.7
Θ
15
11.2
10.2
14.2
10.6
9.7
JA
JA
(A/μs)
(°C/W)
(°C/W)
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
17
(kΩ)
68.1
68.1
68.1
48.7
48.7
48.7
19.1
19.1
11.5
R
242
242
242
121
121
121
28
28
28
4618fa
FB