108979675 Lineage Power, 108979675 Datasheet - Page 15

• Manufacturer Part Number: 108979675
• Description: Module DC-DC 1-OUT 0.75V to 3.63V 5A 5-Pin SIP
• Manufacturer: Lineage Power
• Type: Non-Inverting|Inverting|Step Up|Step Downr

Specifications of 108979675

• Package: 5SIP
• Output Current: 5 A
• Output Voltage: 0.75 to 3.63 V
• Input Voltage: 3 to 5.5 V
• Number Of Outputs: 1
• Switching Regulator: Yes

Data Sheet
July 2, 2010
Power modules operate in a variety of thermal
environments; however, sufficient cooling should be
provided to help ensure reliable operation.
Considerations include ambient temperature, airflow,
module power dissipation, and the need for increased
reliability. A reduction in the operating temperature of the
module will result in an increase in reliability. The thermal
data presented here is based on physical measurements
taken in a wind tunnel. The test set-up is shown in Figure
33. Note that the airflow is parallel to the long axis of the
module as shown in figure 32. The derating data applies
to airflow in either direction of the module’s long axis.
Figure 32. T ref Temperature measurement location.
The thermal reference point, T
specifications of thermal derating curves is shown in
Figure 32. For reliable operation this temperature should
not exceed 125
should not exceed the rated power of the module (Vo,set
x Io,max).
Please refer to the Application Note “Thermal
Characterization Process For Open-Frame Board-
Mounted Power Modules” for a detailed discussion of
thermal aspects including maximum device temperatures.
LINEAGE
Thermal Considerations
Top View
POWER
o
Bottom View
C. The output power of the module
Air Flow
T
ref1
ref 1
used in the
(inductor winding)
3 – 5.5Vdc input; 0.75Vdc to 3.63Vdc Output; 5A output current
T
ref2
Austin MicroLynx
Figure 33. Thermal Test Set-up.
Heat Transfer via Convection
Increased airflow over the module enhances the heat
transfer via convection. Thermal derating curves showing
the maximum output current that can be delivered by
various module versus local ambient temperature (T
natural convection and up to 1m/s (200 ft./min) are shown
in the Characteristics Curves section.
Layout Considerations
Copper paths must not be routed beneath the power
module. For additional layout guide-lines, refer to
FLTR100V10 application note.
Wind Tunnel
PWBs
TM
SIP Non-isolated Power Modules:
flow
Air
(0.285)
x
7.24_
(3.0)
76.2_
25.4_
(1.0)
Probe Location
for measuring
airflow and
ambient
temperature
Power Module
15
A
) for