Evaluation Board User Guide

UG-054

Rev. 0 | Page 7 of 8

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.

GROUND CURRENT CONSUMPTION

Ground current measurements can determine how much current

the internal circuits of the regulator consume while the circuits

perform the regulation function. To be efficient, the regulator

must consume as little current as possible. Typically, the regulator

uses the maximum current when supplying its largest load level

(150 mA). Figure 12 shows the typical ground current consump-

When the device is disabled (EN = GND), ground current

drops to less than 1 μA.

250

200

150

100

50

0

3.5

5.5

5.3

5.1

4.9

4.7

4.5

4.3

4.1

3.9

3.7