MIC94040/1/2/3
28mΩ RDSON 3A High Side Load Switch
in 1.2mm x 1.2mm MLFВ® package General Description Features The MIC94040/1/2/3 is a family of high-side load switches
designed to operate from 1.7V to 5.5V input voltage. The load
switch pass element is an internal 28mΩ RDSON P-channel
MOSFET which enables the device to support up to 3A of
continuous current. Additionally, the load switch supports 1.5V
logic level control and shutdown features in a tiny 1.2mm x
В®
1.2mm 4 pin MLF package.
The MIC94040 and MIC94041 feature rapid turn on, while the
MIC94042 and MIC94043 provide a slew rate controlled softstart turn-on of 100Вµs. The soft-start feature is provided to
prevent an in-rush current event from pulling down the input
supply voltage.
The MIC94041 and MIC94043 feature an active load
discharge circuit which switches in a 200Ω load when the
switch is disabled to automatically discharge a capacitive load.
An active pull-down on the enable input keeps the
MIC94040/1/2/3 in a default OFF state until the enable pin is
pulled above 1.2V. Internal level shift circuitry allows low
voltage logic signals to switch higher supply voltages. The
enable voltage can be as high as 5.5V and is not limited by
the input voltage. …
