LTM4611EV#PBF Linear Technology, LTM4611EV#PBF Datasheet - Page 20

• Manufacturer Part Number: LTM4611EV#PBF
• Description: IC UMODULE DC/DC LV 15A 133-LGA
• Manufacturer: Linear Technology
• Series: µModuler
• Type: Point of Load (POL) Non-Isolatedr

Specifications of LTM4611EV#PBF

• Output: 0.8 ~ 5 V
• Number Of Outputs: 1
• Power (watts): 75W
• Mounting Type: Surface Mount
• Voltage - Input: 1.5 ~ 5.5 V
• Package / Case: 133-LGA
• 1st Output: 0.8 ~ 5 VDC @ 15A
• Size / Dimension: 0.59" L x 0.59" W x 0.17" H (15mm x 15mm x 4.32mm)
• Power (watts) - Rated: 75W
• Operating Temperature: -40°C ~ 125°C
• Efficiency: 94%
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• 3rd Output: -
• 2nd Output: -

LTM4611
applicaTions inForMaTion
0
Figure 16. 5V
16
14
12
10
8
6
4
2
0
55
65
Table 2. 1.2V Output
Table 3. 2.5V Output
Table 4. 3.3V Output
AMBIENT TEMPERATURE (°C)
400LFM
200LFM
0LFM
Figures 10, 12
Figures 10, 12
Figures 10, 12
Figures 9, 11
Figures 9, 11
Figures 9, 11
DERATING
DERATING
DERATING
75
Figures 13
Figures 13
Figures 13
Figures 14
Figures 14
Figures 14
Figures 15
Figures 15
Figures 15
Figures 16
Figures 16
Figures 16
IN
CURVE
CURVE
CURVE
to 3.3V
85
95
OUT
105
with Heat Sink
5V, 3.3V
5V, 3.3V
5V, 3.3V
5V, 3.3V
5V, 3.3V
5V, 3.3V
3.3V
3.3V
3.3V
3.3V
3.3V
3.3V
V
V
V
115
5V
5V
5V
5V
5V
5V
IN
IN
IN
4611 F16
125
POWER LOSS
POWER LOSS
POWER LOSS
Figure 7
Figure 7
Figure 7
Figure 7
Figure 7
Figure 7
Figure 8
Figure 8
Figure 8
Figure 8
Figure 8
Figure 8
Figure 8
Figure 8
Figure 8
Figure 8
Figure 8
Figure 8
CURVE
CURVE
CURVE
ambient temperature change is factored into the derating
curves. The junctions are maintained at 115°C maximum
while lowering output current or power while increasing
ambient temperature. The decreased output current will
decrease the internal module loss as ambient temperature
is increased. The monitored junction temperature of 115°C
minus the ambient operating temperature specifies how
much module temperature rise can be allowed. As an
example in Figure 11, the load current is derated to ~12A
at ~75°C with no air or heat sink and the power loss for
the 3.3V to 1.2V at 12A output is a 2.82W loss. The 2.82W
loss is calculated with the ~2.4W room temperature loss
from the 3.3V to 1.2V power loss curve at 12A (Figure 7),
and the 1.175 multiplying factor at 75°C ambient. If the
AIR FLOW
AIR FLOW
AIR FLOW
(LFM)
(LFM)
(LFM)
200
400
200
400
200
400
200
400
200
400
200
400
0
0
0
0
0
0
BGA Heat Sink
BGA Heat Sink
BGA Heat Sink
BGA Heat Sink
BGA Heat Sink
BGA Heat Sink
BGA Heat Sink
BGA Heat Sink
BGA Heat Sink
HEAT SINK
HEAT SINK
HEAT SINK
None
None
None
None
None
None
None
None
None
θ
θ
θ
JA
JA
JA
15.5
12.7
12.1
12.6
10.6
11.5
10.2
10.1
11.5
10.6
11.5
(°C/W)
8.9
(°C/W)
9.3
(°C/W)
8.4
7.5
14
12
14
4611f