Load switches with controlled slew rate simplify portable electronics designs

Fairchild Semiconductor has introduced the FPF1007-1009 series of advanced load switches with multiple slew-rate options that protect circuits from undesirable voltage and current transients. Targeting portable electronics designs, the FPF1007-9 series has been specifically designed to protect applications with capacitive loads. During turn-on, these loads typically cause transient current spikes and voltage sags, which may cause problems in the end application.

The FPF1007-9 family features slew times of 10 μs, 80 μs and 1 ms to allow designers to choose the slew rate that best fits their application. Longer slew rates ensure a slower turn-on time, which limits the in-rush current into the application's capacitive circuit elements.

As with all IntelliMAX switches, these slew-rate controlled load switches provide a protection interface between the application circuitry, battery and other accessories, and with their high level of integration they simplify designs, reduce component count and minimize board space, according to Fairchild.

The FPF1007, FPF1008 and FPF1009 use lead-free (Pb-free) terminals and have been characterized for moisture sensitivity in accordance with the Pb-free reflow requirements of the joint IPC/JEDEC standard J-STD-020. The devices are RoHS compliant.