®
RT9728B
120mΩ, 1.
8A Power Switch with Adjustable Current Limit
General Description
The RT9728B is a cost effective, low
voltage, single P-
MOSFET power switch IC for USB application with a adjustable current limit feature.
Low switch-on resistance (typ.
120mΩ) and low supply current (typ.
120μA) are realized in this IC.
The RT9728B offers a adjustable current limit threshold between 75mA and 1.
8A (typ.
) via an external resistor.
The ±10% current limit accuracy can be realized for all current limit settings.
In addition, a flag output is available to indicate fault conditions to the local USB controller.
Furthermore, the chip also integrates an embedded delay function to prevent mis-operat...