AXH005A0X-SR Lineage Power, AXH005A0X-SR Datasheet - Page 16

• Manufacturer Part Number: AXH005A0X-SR
• Description: CONVER DC/DC 0.75 3.63V @ 5A SMD
• Manufacturer: Lineage Power
• Series: Austin MicroLynx™r
• Type: Point of Load (POL) Non-Isolated with Remote On/Offr

Specifications of AXH005A0X-SR

• Rohs Status: RoHS non-compliant
• Output: 0.75 ~ 3.63V
• Number Of Outputs: 1
• Power (watts): 18W
• Mounting Type: Surface Mount
• Voltage - Input: 3 ~ 5.5V
• Package / Case: 5-SMD Module
• 1st Output: 0.75 ~ 3.63 VDC @ 5A
• Size / Dimension: 0.80" L x 0.45" W x 0.25" H (20.3mm x 11.4mm x 6.2mm)
• Power (watts) - Rated: 18W
• Operating Temperature: -40°C ~ 85°C
• Efficiency: 94%
• Approvals: CSA, EN, UL, VDE
• Product: Non-Isolated / POL
• 3rd Output: -
• 2nd Output: -
• Lead Free Status / Rohs Status: No RoHS Version Available
• Other names: 555-1010-2

Data Sheet
October 2, 2009
Thermal Considerations
Power modules operate in a variety of thermal
environments; however, sufficient cooling should always
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. Note that the airflow is parallel to
the long axis of the module as shown in figure 34. The
test set-up is shown in figure 35. The derating data
applies to airflow in either direction of the module’s long
axis.
Figure 34. T ref Temperature measurement location.
The thermal reference point, T
specifications is shown in Figure 34. For reliable
operation this temperature should not exceed 115
The output power of the module 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
POWER
Bottom View
Top View
ref
used in the
Air Flow
3.0 – 5.8Vdc input; 0.75Vdc to 4.0Vdc Output; 5A output current
T
ref
Austin MicroLynx
o
C.
Wind T unnel
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 at
different local ambient temperatures (T
conditions ranging from natural convection and up to
1m/s (200 ft./min) are shown in the Characteristics
Curves section.
Figure 35. Thermal Test Set-up.
PWBs
TM
SMT Non-isolated Power Modules:
flow
Air
(0.235)
x
5.97_
(3.0)
76.2_
25.4_
(1.0)
A
) for airflow
Probe Location
for measuring
airflow and
ambient
temperature
Power Module
16