Datasheet

UG-117 Evaluation Board User Guide
Rev. A | Page 4 of 8
OUTPUT VOLTAGE MEASUREMENTS
+
–
VOLTAGE SOURCE
+
–
VOLTMETER
LOAD
1.99711
08935-005
Figure 5. Output Voltage Measurement Setup, TSOT
08935-006
+
–
VOLTMETER
+
–
VOLTAGE SOURCE
LOAD
1.99711
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 voltmeter for basic output
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 voltmeter:
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 voltmeter to one
of the GND pads.
5. Connect the positive terminal (+) of the voltmeter 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 voltmeter
as close as possible to the output capacitor to reduce the effects
of IR drops.