EVAL-ADP7158 Datasheet, PDF (7/8 Pages) Analog Devices – Evaluating the ADP7158 Ultralow Noise

EVAL-ADP7158 User Guide
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. For efficiency, the regulator
must consume as little current as possible. Typically, the regulator
uses the maximum current when supplying its largest load level
(2 A). The typical ground current consumption for various load
current levels at VOUT = 3.3 V and TA = 25°C is shown in Figure 8.
When the device is disabled (EN = GND), the ground current
typically drops to 0.2 µA.
UG-794
14
13
I_LOAD = 0mA
I_LOAD = 10mA
12
I_LOAD = 100mA
11
I_LOAD = 600mA
10
I_LOAD = 1200mA
I_LOAD = 2000mA
9
8
7
6
5
4
3
2
1
0
3.8 4.0 4.2 4.4 4.6 4.8 5.0 5.2 5.4 5.6
V_IN (V)
Figure 8. Ground Current (IGND) vs. Input Voltage (VIN), VOUT = 3.3 V, TA = 25°C,
CIN = COUT = 10 µF
Rev. 0 | Page 7 of 8