CALIFORNIA MICRO DEVICES
CMPWR300
Fig 1.4. Ground Current
2.0
1.5
1.0
0.5
0.0
Fig 1.4.
Ground Current is shown across the entire range of load
conditions. The ground current has minimal variation
across the range of load conditions and shows only a
slight increase at maximum load due to the current limit
protection circuitry.
0
100
200
300
400
500
Load Current [mA]
Fig 1.5. Vcc Supply Current (No Load)
10000
Fig 1.5.
VCC Supply Current of the device is shown across the
entire VCC range for both VAUX present (3.3V) and absent
(0V).
Vaux = 0V
1000
100
10
In the absence of VAUX, the supply current remains fixed
at approximately 1mA when VCC reaches the voltage level
of about 2.5V. At this point the regulator is enabled and
a supply current of 1.0mA is conducted.
Vaux= 3.3V
When VAUX is present, the VCC supply current is less than
10uA until VCC exceeds VAUX, at which point VCC then
powers the controller (0.15mA). When VCC reaches VSELECT
,
1
2
3
4
5
the regulator is enabled.
Vcc [V]
© 2000 Calirornia Micro Devices Corp. All rights reserved.
12/5/2000
215 Topaz Street, Milpitas, California 95035
Tel: (408) 263-3214
Fax: (408) 263-7846
www.calmicro.com
5
CALMIRCO [ CALIFORNIA MICRO DEVICES CORP ]
