2

dc2318af

DEMO MANUAL DC2318A

QUICK START PROCEDURE

Demonstration circuit 2318A is easy to set up to evalu-

ate the performance of the LT3089. Refer to Figure 1 for

proper measurement equipment setup and follow the

procedure below:

NOTE: When measuring the input or output voltage ripple,

care must be taken to avoid a long ground lead on the

oscilloscope probe. Measure the input or output voltage

ripplebytouchingtheprobetipdirectlyacrosstheterminals

of the input or output capacitors. See Figure 2 for proper

scope probe technique

1. Use JP1 to set the desired output voltage

and GND.

4. Check for the proper output voltages:

NOTE:Ifthereisnooutput,temporarilydisconnecttheload

to make sure that the load is not set too high or is shorted.

5. Once the proper output voltages are established, adjust

theloadswithintheoperatingrangeandobservetheout-

putvoltageregulation,efficiencyandotherparameters.

NOTE: Make sure that the power dissipation is limited

below the thermal limit.

Figure 1. Test Procedure Setup Drawing for DC2276A

Figure 2. Measuring Input or Output Ripple

–

+

–

+

POWER

SUPPLY

–

+

–

+

LOAD

–

+

DC2318A F01

GND