Programming
Thermal Design Guide
The 6-PAK™ is programmed through the Control SIP. All
connected Power Boosters follow the Control SIP
programming. To program the 6-PAK™ for Vout<3.3,
connect a resistor across the TRIM and Vo pins. For
Vout>3.3, resistor is connected across TRIM and GND.
Locate your operating current, read the junction temp rise
from the graph and add to your maximum ambient. 135°C
is the maximum allowable operating junction temperature.
Test conditions: Device soldered into 4” X 4: PCB, 2-sided
with power and ground planes for heat conduction. Due to
the difficulty in predicting the thermal effects of airflow
velocity and direction, and thermal conduction through
ground planes, it is important that the 6-PAK™ be evaluated
thermally in each application.For high ambient temperature/
high current application, please request our Application
Note, “Accurate Measurements of 6-PAK™ Junction
Temperature.”
Table 2
Vout
Resistor Value
Vout
Resistor Value
1.8
1.9
2.0
2.1
2.2
2.3
2.4
2.5
2.6
2.7
0Ω
15.6Ω
34Ω
55.6Ω
80.6Ω
110Ω
147Ω
196Ω
255Ω
332Ω
2.8
2.9
3.0
3.1
3.2
3.3
3.4
3.5
3.6
442Ω
604Ω
866Ω
1.37k
2.80k
Open
2.32k
1.00k
649Ω
T
j
Rise vs. I
o
(JunctionTemp Rise vs. Output Current)
Transient Response
Operating conditions are as follows: Vin=5V, Vo=3.3V, Load
change from Io=0% to Io=100%, TA=25°C, Cin=0F, Co=µF.
Output Current - Amps
Efficiency
Operating conditions are as follows: Vin=5V, Vo=3.3V, Load
change from Io=100% to Io=0%, TA=25°C, Cin=0F, Co=µF.
Output Current - Amps
Ordering Information
Typical examples:
6P
6P
25
-
C
P
6A Control SIP
25 -
6A Power Booster SIP
6-PAK 11/99 REV D
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