Datasheet

EVAL-ADP170/ADP171
Rev. 0 | Page 6 of 8
GROUND CURRENT MEASUREMENTS
Figure 8 shows how the evaluation board can be connected to a
voltage source and an ammeter to measure ground currents. A
resistor can be used as the load for the regulator. Ensure that the
resistor has an adequate power rating for handling the power
expected to be dissipated across it. An electronic load can be
used as an alternative. Ensure that the voltage source used can
supply enough current for the expected load levels.
Use the following steps to connect to a voltage source and
ammeter:
1. Connect the positive terminal (+) of the voltage source to
the VIN pad on the evaluation board.
2. Connect the positive terminal (+) of the ammeter to one of
the GND pads of the evaluation board.
3. Connect the negative terminal (−) of the ammeter to the
negative (−) terminal of the voltage source.
4. Connect a load between the negative (−) terminal of the
voltage source and the pad closest to the VOUT pin of the
evaluation board.
The voltage source can then be turned on. If J1 is inserted
(which connects EN to VIN for automatic startup), the
regulator powers up. For ADP170, Jumper J2 need not be
inserted as shown in Figure 8.
+
–
VOLTAGE SOURCE
V
IN
AMMETER
GROUND CURRENT
+–
0.035
07723-008
Figure 8. Configuration for Ground Current Measurements