UG-054

Evaluation Board User Guide

Rev. 0 | Page 4 of 8

OUTPUT VOLTAGE MEASUREMENTS

VOLTMETER

VOLTAGE SOURCE

LOAD

Figure 5. Output Voltage Measurement Setup, TSOT

VOLTAGE SOURCE

VOLTMETER

LOAD

Figure 6. Output Voltage Measurement Setup, WLCSP

Figure 5 and Figure 6 show how the evaluation board can be

connected to a voltage source and a voltage meter for basic out-

put voltage accuracy measurements. A resistor can be used as

the load for the regulator. Ensure that the resistor has a power

rating that is adequate to handle the power that is expected to

be dissipated across it. An electronic load can also be used as

an alternative. Ensure that the voltage source can supply enough

current for the expected load levels.

Follow these steps to connect to a voltage source and voltage meter:

1.

Connect the negative terminal (−) of the voltage source to

one of the GND pads on the evaluation board.

2.

Connect the positive terminal (+) of the voltage source to

the VIN pad of the evaluation board.

3.

Connect a load between the VOUT pad and one of the

GND pads.

4.

Connect the negative terminal (−) of the voltage meter to

one of the GND pads.

5.

Connect the positive terminal (+) of the voltage meter to

the VOUT pad.

When these steps are completed, the voltage source can be

turned on. If J1 is inserted (connecting EN to VIN for auto-

matic startup), the regulator powers up.

If the load current is large, the user must connect the voltage

meter as close as possible to the output capacitor to reduce the

effects of IR drops.