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DEMO MANUAL DC1868A

Rev. 0

QUICK START PROCEDURE

Figure 1. Proper Measurement Equipment Setup

Demonstration circuit 1868A is easy to set up to evaluate

the performance of the LTM8024. Refer to Figure 1 for

the proper measurement equipment setup and follow the

procedure below:

1. With power off, connect the input power supply to VIN1

(7V – 40V) and GND (input return).

2. Connect the 5V output load between VOUT1 and GND

(Initial load: no load); and connect the 3.3V output load

between VOUT2 and GND (Initial load: no load).

3. Connect the DVMs to the input and outputs.

4. Turn on the input power supply and check for the

proper output voltages. VOUT1 should be 5V ± 3%;

VOUT2 should be 3.3V ± 3%.

5. Once the proper output voltages are established, adjust

the loads within the operating range and observe

the output voltage regulation, efficiency and other

parameters.

NOTE: When measuring the output or input voltage

ripple, do not use the long ground lead on the oscil-

loscope probe. See Figure 2 for the proper scope probe

technique. Short, stiff leads need to be soldered to

the (+) and (–) terminals of an output capacitor. The

probe’s ground ring needs to touch the (–) lead and

the probe tip needs to touch the (+) lead.