Datasheet
P
D(MAX)
+
T
J(MAX)
* T
A
R
qJA
+
125°C * 85°C
84 °CńW
+ 476 mW
TPS63036
SLVSB76 –AUGUST 2012
www.ti.com
LAYOUT CONSIDERATIONS
For all switching power supplies, the layout is an important step in the design, especially at high peak currents
and high switching frequencies. If the layout is not carefully done, the regulator could show stability problems as
well as EMI problems. Therefore, use wide and short traces for the main current path and for the ground tracks.
The input capacitor, output capacitor, and the inductor should be placed as close as possible to the IC.
The feedback divider should be placed as close as possible to the ground pin of the IC.
THERMAL INFORMATION
Implementation of integrated circuits in low-profile and fine-pitch surface-mount packages typically requires
special attention to power dissipation. Many system-dependent issues such as thermal coupling, airflow, added
heat sinks and convection surfaces, and the presence of other heat-generating components affect the power-
dissipation limits of a given component.
Three basic approaches for enhancing thermal performance are listed below.
1. Improving the power dissipation capability of the PCB design
2. Improving the thermal coupling of the component to the PCB by soldering all pins to traces as wide as
possible.
3. Introducing airflow in the system
The maximum recommended junction temperature (T
J
) of the TPS63036 device is 125°C. The thermal
resistance of this 8-pin chip-scale package (YFG) is R
θJA
= 84°C/W, if all pins are soldered. Specified regulator
operation is assured to a maximum ambient temperature T
A
of 85°C. Therefore, the maximum power dissipation
is about 476 mW, as calculated in Equation 9. More power can be dissipated if the maximum ambient
temperature of the application is lower.
(9)
PACKAGE INFORMATION
Package Dimensions
The package dimensions for this YFG package are shown in the table below. See the package drawing at the
end of this data sheet for more details.
Table 4. YFG Package Dimensions
Packaged Devices D E
TPS63036YFG 1.854 ± 0.03mm 1.076±0.03mm
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