AiT Semiconductor Inc.
www.
ait-ic.
com
A4772
POWER SWITCHES WITH FLAG 80mΩ, 0.
5A/0.
8A/1A/1.
5A HIGH-SIDE
DESCRIPTION
The A4772 is a low
voltage, single N-
MOSFET high-side power switch, optimized for self-powered and bus-powered Universal Serial Bus (USB) applications.
The A4772 equipped with a charge pump circuitry to drive the internal
MOSFET switch; the switch's low RDS(ON), 80mΩ, meets USB
voltage drop requirements and a flag output is available to indicate fault conditions to the local USB controller.
Additional features include soft-start to limit inrush current during plug-in, thermal shutdown to prevent catastrophic switch failure from high-current loads, under-
voltage lockout (UVLO) ...