Datasheet

Evaluation Board User Guide UG-117
Rev. A | Page 7 of 8
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-
tion for various load levels at V
OUT
= 3.3 V and T
A
= 25°C.
When the device is disabled (EN = GND), ground current
drops to less than 50 nA.
100
0.1
3.7 5.5
GROUND CURRENT (µA)
V
IN
(V)
08935-012
1
10
3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3
NO LOAD
LOAD = 1µA
LOAD = 100µA
LOAD = 1mA
LOAD = 10mA
LOAD = 100mA
LOAD = 150mA
Figure 12. Ground Current vs. Input Voltage (V
IN
), V
OUT
= 3.3 V, T
A
= 25°C