EVAL-ADP7159 Datasheet, PDF (8/9 Pages) Analog Devices – Power supply rejection ratio

UG-811
GROUND CURRENT CONSUMPTION
Ground current measurementscan determine how much current
the internal circuits of the regulator consume while the circuits
perform the regulation function.For efficiency, the regulatormust
consume aslittle current as possible. Typically, the regulator uses
the maximum current when supplying the largest load level (2 A).
The typical groundcurrentconsumption for various load current
levels atVOUT = 3.3 V and TA = 25°C is shownin Figure 12.
When the device is disabled (EN = GND), the ground current
typically drops to 0.2 µA.
EVAL-ADP7159 User Guide
14
13
12
11 _{ILOAD = 2000mA}
10
9 I_LOAD = 1200mA
8
I_LOAD = 600mA
7
6 I_LOAD = 100mA
5
4
I_LOAD = 10mA
I_LOAD = 0mA
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 12. Ground Current (IGND) vs. Input Voltage (VIN), VOUT = 3.3 V, TA = 25°C,
CIN = COUT = 10 µF
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