Microchip Technology, Inc. Power Distribution Switches, Load Drivers MIC2549A-2BN

The MIC2549A-2BN is an integrated high-side power switch designed for low-loss DC power switching and power management applications. It operates with an input voltage range of 2.7V to 5.5V and features an adjustable current limit of up to 3A. The device includes reverse current flow blocking, a typical on-state supply current of 90¬µA, and an off-state supply current of 1¬µA. The maximum on-resistance is specified at 50m,Ѷ. This switch incorporates a thermal shutdown feature with an output latch, which turns off the output during thermal shutdown conditions, enhancing fault protection. It also includes a soft-start function that minimizes inrush current during activation, with a turn-on time of 2ms and fast turn-off capabilities. The enable signal is compatible with both 3V and 5V logic levels, and the device is available in active-low configurations. The MIC2549A-2BN is suitable for various applications, including USB power distribution, PCI bus power switching, notebook PCs, ACPI power distribution, and PC card hot swap applications. It is offered in an 8-pin DIP package and operates over a temperature range of -40¬8C to +85¬8C.