108988358 Lineage Power, 108988358 Datasheet - Page 15

• Manufacturer Part Number: 108988358
• Description: Module DC-DC 1-OUT 0.75V to 3.63V 6A 6-Pin SMT T/R
• Manufacturer: Lineage Power
• Type: Non-Inverting|Inverting|Step Up|Step Downr

Specifications of 108988358

• Package: 6SMT
• Output Current: 6 A
• Output Voltage: 0.75 to 3.63 V
• Input Voltage: 2.4 to 5.5 V
• Number Of Outputs: 1
• Switching Regulator: Yes

Data Sheet
October 2, 2009
Thermal Considerations
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.
The thermal reference point, T
specifications of thermal derating curves is shown in
Figure 32. For reliable operation this temperature should
not exceed 125
The output power of the module should not exceed the
rated power of the module (Vo,set x Io,max).
LINEAGE
Figure 32. T ref Temperature measurement location.
Bottom View
POWER
Top View
o
C.
Air Flow
ref 1
2.4 – 5.5Vdc input; 0.75Vdc to 3.63Vdc Output; 6A output current
used in the
T
ref1
(inductor winding)
T
Austin MicroLynx
ref2
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.
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
(200 ft./min) are shown in the Characteristics Curves
section.
Wind Tunnel
TM
PWBs
II SMT Non-isolated Power Modules:
A
) for natural convection and up to 1m/s
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