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dc1855af
DEMO MANUAL DC1855A
Quick start proceDure
It is easy to set up demonstration circuit DC1855A to
evaluate the performance of the LT3030. Refer to Figure 1
for the proper measurement equipment setup and follow
the procedure below:
1. With the input supplies and loads off and turned down,
make all connections according to Figure 1. Set the
output voltages for channels 1 and 2 with the VOUT
SELECT jumpers. Make sure the VOUTEN jumpers are
in the ON positions.
2. Turn on the input supplies and increase them to the
desired input voltages.
NOTE WHEN SETTING THE INPUT VOLTAGE: An input
voltage that is too close to the programmed output volt-
age (too low) may cause dropout operation and a loss
of output voltage regulation. An input voltage that is too
high above the output may increase power dissipation to
an unacceptable level. Finally, a protection feature within
the LT3030 reduces output current capability at higher
input voltages.
3. Increase the loads to the desire output current. Verify
that the output voltages are as programmed by the
VOUT SELECT jumpers.
NOTE: If an output voltage is low, temporarily disconnect
the load to make sure that it is not set too high.
4. Once the proper output voltages are established, adjust
the input voltage and load within the operating ranges
and observe the output voltage regulation, low quiescent
current, shutdown and PWRGD operation and other
parameters.
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