The MAX4914B/MAX4915A/B/MAX4917A/B family of
switches feature internal current limiting to prevent
damage to host devices due to faulty load conditions.
These analog switches have a low 0.2 on-resistance and operate from a 2.3V to 5.5V input voltage range.
They are available with guaranteed 100mA, 200mA,
and 300mA current limits, making them ideal for SDIO
and other load switching applications.
When the switch is on and a load is connected to the
port, a guaranteed blanking time of 14ms ensures that
the transient voltages settle down. If after this blanking
time the load current is greater than the current limit,
the MAX4914B/MAX4915B/MAX4917B latchoff versions
enter a latchoff state where the switch is turned off and
active-low flag is issued to the microprocessor. The switch can
be turned on again by cycling the power or the ON pin.
The MAX4915A/MAX4917A have an autoretry feature
where the switch turns off after the blanking time and
then continuously checks to see if the overload condition
is present. The switch turns on and remains on
after the overload condition disappears and active-low FLAG
deasserts.
The MAX4914B is available in the tiny 6-pin µDFN
(2mm x 2mm) package, while the MAX4915A/B
and MAX4917A/B are available in both 6-pin µDFN
(2mm x 2mm) and space-saving 5-pin SOT23 packages.
These devices operate over the -40°C to +85°C
extended temperature range.
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