ltm4611 Linear Technology Corporation, ltm4611 Datasheet - Page 21

• Manufacturer Part Number: ltm4611
• Description: Ltm4611 Ultralow Vin, 15a Dc/dc ?module Regulator Features
• Manufacturer: Linear Technology Corporation

applicaTions inForMaTion
Table 5. Output Voltage Response Versus Component Matrix, 0A to 7.5A Load Step
TYPICAL MEASURED VALUES
C
AVX
Taiyo Yuden
TDK
AVX
Taiyo Yuden
TDK
75°C ambient temperature is subtracted from the 115°C
junction temperature, then the difference of 40°C divided
by 2.82W yields a thermal resistance, θ
good agreement with Table 2. Tables 2, 3 and 4 provide
equivalent thermal resistances for 1.2V, 2.5V and 3.3V
outputs with and without air flow and heat sinking. The
derived thermal resistances in Tables 2, 3 and 4 for the
V
OUT1
(V)
0.9 1.5
0.9 1.5
0.9 1.8
0.9 1.8
0.9 1.8
0.9 2.5
0.9 2.5
0.9 3.3
0.9 3.3
0.9
0.9
1.2 1.5
1.2 1.5
1.2 1.8
1.2 1.8
1.2 1.8
1.2 2.5
1.2 2.5
OUT
1
1
1
1
1
1
1
1
1
1
1
VENDORS
V
(V)
1.5
1.5
1.8
1.8
1.8
2.5
2.5
3.3
3.3
5
5
5
5
IN
(CERAMIC)
2 × 47µF
2 × 47µF
2 × 47µF
2 × 47µF
2 × 47µF
2 × 47µF
2 × 47µF
2 × 47µF
2 × 47µF
2 × 47µF
2 × 47µF
2 × 47µF
2 × 47µF
2 × 47µF
2 × 47µF
2 × 47µF
2 × 47µF
2 × 47µF
2 × 47µF
2 × 47µF
2 × 47µF
2 × 47µF
2 × 47µF 1000µF 6 × 100µF
2 × 47µF 1000µF 2 × 22µF
2 × 47µF
2 × 47µF
2 × 47µF
2 × 47µF
2 × 47µF
C
IN
*
PART NUMBER
12106D107MAT2A (100µF, 6.3V, 1210 Case Size)
JMK325BJ107MM-T (100µF, 6.3V, 1210 Case Size)
C3225X5R0J107MT (100µF, 6.3V, 1210 Case Size)
1206D226MAT (22µF, 6.3V, 1206 Case Size)
JMK316BJ226ML-T (22µF, 6.3V, 1206 Case Size)
C3216X5R0J226MT (22µF, 6.3V, 1206 Case Size)
(BULK)
470µF 5 × 100µF
470µF
220µF 4 × 100µF
220µF
220µF
150µF
150µF
150µF
150µF
150µF
150µF
680µF 5 × 100µF
680µF
330µF 4 × 100µF
330µF
330µF
150µF
150µF
150µF
150µF
150µF
150µF
470µF 4 × 100µF
470µF
470µF
220µF 4 × 100µF
220µF
C
IN
*
(CERAMIC)
5 × 100µF
4 × 100µF
4 × 100µF
4 × 100µF
4 × 100µF
4 × 100µF
3 × 22µF
3 × 22µF
4 × 22µF
7 × 22µF
7 × 22µF
6 × 22µF
3 × 22µF
3 × 22µF
4 × 22µF
7 × 22µF
7 × 22µF
6 × 22µF
3 × 22µF
4 × 22µF
5 × 22µF
C
OUT2
(BULK)
470µF
470µF
330µF
330µF
330µF
330µF
470µF
470µF
330µF
330µF
330µF
330µF
470µF
470µF
330µF
330µF
C
None
None
None
None
None
None
None
None
None
None
None
None
None
JA
OUT1
, of 14.2°C/W—in
220pF None
220pF None
220pF None
220pF None
220pF None
220pF None
100pF None
22pF
22pF
33pF
None
33pF
33pF
22pF
47pF
47pF
10pF
47pF
10pF
47pF
10pF
47pF
10pF
47pF
10pF
47pF
22pF
22pF
10pF
C
FF
None
None
None
None
None
None
None
None
None
None
None
None
None
None
10pF
22pF
10pF
10pF
10pF
10pF
10pF
10pF
C
P
USING
DIFF
AMP FIGURE
C
Sanyo POSCAP
Sanyo POSCAP
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
OUT2
various conditions can be multiplied by the calculated
power loss as a function of ambient temperature to derive
temperature rise above ambient, thus maximum junction
temperature. Room temperature power loss can be derived
from the efficiency curves in the Typical Performance
Characteristics section and adjusted with the above ambi-
ent temperature multiplicative factors.
VENDORS
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
21
TRANSIENT
LOAD STEP
0A TO 7.5A
DROOP,
(mV)
65
63
65
60
64
54
65
50
55
47
61
70
62
68
60
66
61
63
52
57
53
62
82
70
75
64
72
58
65
PART NUMBER
6TPF330M9L (330µF, 6.3V, 9mΩ ESR, D3L Case Size)
2R5TPE470M9 (470µF, 2.5V, 9mΩ ESR, D2E Case Size)
0A TO 7.5A TO 0A
PEAK-TO-PEAK,
TRANSIENT
(mV
118
122
119
113
119
108
123
104
109
102
116
128
121
123
115
123
115
115
106
108
119
145
133
136
126
137
114
122
111
P-P
)
RECOVERY
TIME (µs)
LTM4611
15
25
20
25
30
20
20
25
20
20
20
20
25
20
30
30
25
25
30
20
25
25
20
30
25
30
30
30
25
SLEW
(A/µs)
LOAD
STEP
RATE
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5

R
(kΩ)
481
481
481
481
481
481
481
481
481
481
481
243
243
243
243
243
243
243
243
243
243
243
121
121
121
121
121
121
121
4611f
SET