Datasheet

Evaluation Board User Guide UG-186
Rev. 0 | Page 7 of 12
When the device is disabled (EN1, EN2, and EN3 = GND),
ground current drops to less than 1 μA.
0
50
100
150
200
250
300
1.7 2.1 2.5 2.9 3.3 3.7 4.1 4.5 4.9 5.3
V
IN
(V)
GROUND CURRENT (µA)
LOAD = 1mA
LOAD = 5mA
LOAD = 10mA
LOAD = 50mA
LOAD = 100mA
LOAD = 200mA
0
9299-017
Figure 8. Ground Current vs. Input Voltage,
All Outputs Loaded Equally, ADP322
BIAS CURRENT MEASUREMENT
Bias current measurements can determine how much current
the regulator’s internal bias circuits consume while the circuits
perform the regulation function. The bias current typically does
not vary much with the load current or input voltage. Figure 8
shows the typical bias current consumption for various load
levels at a bias voltage of 4 V for all three outputs loaded equally.
0
10
20
30
40
50
60
70
80
90
100
1 10 100 1000
I
LOAD
(mA)
BIAS CURRENT (µA)
0
9299-019
Figure 9. Bias Current vs. Load Current, All Outputs Loaded Equally, ADP322