LTM4600IV#2DHPBF Linear Technology, LTM4600IV#2DHPBF Datasheet - Page 14

• Manufacturer Part Number: LTM4600IV#2DHPBF
• Description: IC DC/DC UMODULE 10A 104-LGA
• Manufacturer: Linear Technology
• Series: µModuler
• Type: Point of Load (POL) Non-Isolatedr

Specifications of LTM4600IV#2DHPBF

• Output: 0.6 ~ 5 V
• Number Of Outputs: 1
• Power (watts): 50W
• Mounting Type: Surface Mount
• Voltage - Input: 4.5 ~ 20V
• Package / Case: 104-LGA
• 1st Output: 0.6 ~ 5 VDC @ 10A
• Size / Dimension: 0.59" L x 0.59" W x 0.11" H (15mm x 15mm x 2.8mm)
• Power (watts) - Rated: 50W
• Operating Temperature: -40°C ~ 85°C
• Efficiency: 92%
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• 3rd Output: -
• 2nd Output: -

APPLICATIONS INFORMATION
LTM4600
Thermal Considerations and Output Current Derating
The power loss curves in Figures 8 and 13 can be used
in coordination with the load current derating curves in
Figures 9 to 12, and Figures 14 to 15 for calculating an
approximate θ
ing methods. Thermal models are derived from several
Table 3. 1.5V Output
Table 4. 3.3V Output
14
DERATING CURVE
DERATING CURVE
Figures 10, 12
Figures 10, 12
Figures 10, 12
Figures 9, 11
Figures 9, 11
Figures 9, 11
Figure 7. Parallel Two μModules with Load Sharing
Figure 14
Figure 14
Figure 14
Figure 15
Figure 15
Figure 15
V
IN
JA
for the module with various heatsink-
V
PGND
V
PGND
IN
IN
COMP V
COMP V
LTM4600
LTM4600
V
V
5, 12
5, 12
5, 12
5, 12
5, 12
5, 12
IN
IN
OSET
OSET
12
12
12
12
12
12
(V)
(V)
R
SET
SGND
SGND
V
V
OUT
OUT
4600 F07
POWER LOSS CURVE
POWER LOSS CURVE
V
(20A
OUT
Figure 13
Figure 13
Figure 13
Figure 13
Figure 13
Figure 13
Figure 8
Figure 8
Figure 8
Figure 8
Figure 8
Figure 8
MAX
)
temperature measurements at the bench, and thermal
modeling analysis. Application Note 103 provides a detailed
explanation of the analysis for the thermal models, and the
derating curves. Tables 3 and 4 provide a summary of the
equivalent θ
θ
improve with air-fl ow. The case temperature is maintained
at 100°C or below for the derating curves. This allows for
4W maximum power dissipation in the total module with
top and bottom heatsinking, and 2W power dissipation
through the top of the module with an approximate θ
between 6°C/W to 9°C/W. This equates to a total of 124°C
at the junction of the device.
Safety Considerations
The LTM4600 modules do not provide isolation from V
V
with a rating twice the maximum input current should be
provided to protect each unit from catastrophic failure.
AIR FLOW (LFM)
JA
AIR FLOW (LFM)
OUT
parameters are correlated to the measured values, and
. There is no internal fuse. If required, a slow blow fuse
200
400
200
400
200
400
200
400
0
0
0
0
JA
for the noted conditions. These equivalent
BGA Heatsink
BGA Heatsink
BGA Heatsink
BGA Heatsink
BGA Heatsink
BGA Heatsink
HEATSINK
HEATSINK
None
None
None
None
None
None
θ
θ
JA
JA
10.25
15.2
13.9
11.3
15.2
14.6
13.4
13.9
11.1
10.5
(°C/W)
14
12
(°C/W)
IN
4600fc
JC
to