The FA7623A is a low RDS(ON), up to 3A low loss power distribution switch with a fixed current limit to protect the power source from over current or short circuit conditions. The power switch is controlled by an on/off input (EN/ENb), which is capable of interfacing directly with low-voltage control signals. A 90Ω on-chip load resistor is added for output discharge when the switch is turned off.
The FLAGb pin is an open drain output that asserts (active low) when over-current or over-temperature event occurs. The FLAGb signal remains asserted until the fault condition is removed and the device resumes normal operation. The FA7623A is designed to eliminate false fault reporting by using an internal deglitch circuit.