I'm looking for a load switch capable to switch loads up to 1.25A continuous and 2.5A pulsed for 0.5 seconds.
The device is also used as inrush current limiter.
Recently, I ordered an evaluation board for the ADP197 load switch (6-Ball WLCSP package).
According to the datasheet, this device should be able to switch loads up to 3A continuous.
However, when I switch a load of 1.5A (3.3 Ohm at 5V supply), the device already breaks down immediately after the first time a short pulse (60ms) is given on the enable pin.
The device is connected according to fig. 6 in UG-228 with a load of 3.3 Ohm, the enable pin is connected to a function generator that creates a single pulse of 60ms.
Measurement result:
Yellow: Enable
Blue: Vin
Red: Vout
Is it possible to explain why the ADP197 breaks down?
Is there an alternative part that is better suitable for this purpose?