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CMPWR280

6

The transient characterization test setup shown below includes

the effective source impedance of the V

was measured to be approximately 0.1Ω. It is recommended

that this effective source impedance be no greater than 0.15Ω

to ensure precise switching is maintained during V

and deselection.

Both the rise and fall times during V

sequencing were controlled to be around 10 milliseconds

duration. This is considered to represent worst case conditions

for most application circuits.

During a selection or deselection transition the DC load current

is switching from V

V

be an in-rush current for charging/discharging the load

capacitor.

The total current pulse being applied to either V

equal to the sum of the dc load and the corresponding in-

rush current. Transient currents in excess of one amp can

readily occur for brief intervals when either supply

commences to power the load.

V

from 15mA to 1500mA. An overshoot of approximately

300mV is observed, before settling within 3us.

Typical Transient Characteristics

V

V

5mA to 375mA. An overshoot of approximately 100mV is

observed, before settling within 1us.

V