CMPWR300SA datasheet(5/11 Pages) CALMIRCO

5 / 11 page

12/5/2000

215 Topaz Street, Milpitas, California 95035

Tel: (408) 263-3214

Fax: (408) 263-7846

www.calmicro.com

CALIFORNIA MICRO DEVICES

CMPWR300

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.

Fig 1.5.

CC Supply Current of the device is shown across the

entire V

CC range for both VAUX present (3.3V) and absent

(0V).

In the absence of V

AUX, the supply current remains fixed

at approximately 1mA when V

CC reaches the voltage level

of about 2.5V. At this point the regulator is enabled and

a supply current of 1.0mA is conducted.

When V

AUX is present, the VCC supply current is less than

10uA until V

CC exceeds VAUX, at which point VCC then

powers the controller (0.15mA). When V

CC reaches VSELECT,

the regulator is enabled.

Fig 1.4. Ground Current

0.0

0.5

1.0

1.5

2.0

100

200

300

400

500

Load Current [mA]

Fig 1.5. Vcc Supply Current (No Load)

100

1000

10000

Vcc [V]

Vaux = 0V

Vaux = 3.3V

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