2
dc2120af
DEMO MANUAL DC2120A
Quick start proceDure
Demonstration circuit 2120A is easy to set up to evalu-
ate the performance of the LT3048. Refer to Figure 2 for
proper measurement equipment setup and follow the
procedure below:
NOTE. When measuring the output voltage ripple, connect
a X1 oscilloscope probe as shown in Figure 3.
1. Place jumper in the following positions: JP1 Run
2. With power off, connect the input power supply to V
IN
and GND.
3. Turn on the power at the input.
NOTE. Make sure that the input voltage does not
exceed 4.8V.
4. Connect a 20mA load from V
OUT
to GND and check for
the proper output voltage. V
OUT
= 14.625V to 15.375V
If there is no output, temporarily disconnect the load
to make sure that the load is not set too high.
5. Once the proper output voltages are established, adjust
the input voltage and load within the operating range
and observe the output voltage regulation, ripple volt-
age, efficiency and other parameters.
Figure 2. Proper Measurement Equipment Setup
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