The LQ05021QCS4 from Littelfuse is a Load Switch that is ideal for mobile devices, low-power sub-systems, data storage, SSD, IoT devices, and wearable applications. It requires an input voltage of 1.1-5.5 V, an input current of 1 nA, and provides an output current of up to 2 A. This load switch is based on cutting-edge technology that offers low quiescent and shutdown currents. This low-current feature empowers designers to curtail parasitic leakage current, enhance system efficiency, and extend battery lifetime. This switch IC incorporates a slew rate control mechanism that mitigates voltage swings on the bus during switching events, limits inrush current levels, minimizes voltage drooping, and fixes potential bus reset issues.
This load switch also includes a pull-down resistor that pulls the primary switch to the OFF state when no Enable signal from an external controller is applied. It can be designed with wider trace widths at the voltage pins to minimize parasitic inductance and enhance thermal efficiency under high load current conditions. This RoHS-compliant load switch IC is available in a wafer-level package that measures 0.77 x 0.77 x 0.46 mm.
