RT9712

® RT9712 90mΩ, 1A/1.5A High-Side Dual Power Switches with Flag General Description The RT9712 power-distribution switches are designed to fulfill the applications in heavy capacitive loads and shortcircuit situations. The device incorporates two 90mΩ NMOSFET power switches to fit power distribution systems requiring multiple power switches in a single package. During switching process, an internal charge pump is designed to provide the gate drive for the purpose of powerswitch rise times and fall times controlling to minimize the current surges. The charge pump can operate in supply voltage as low as 2.7V and needs no external components. If the output load exceeds the current-limit threshold or a short-circuit occurs.The RT9712 series pull the overcurrent (FLGx) logic output low by switching into the constantcurrent mode to maintain the output current in a safe level, A thermal protection circuit turns off the switch to prevent the device from damage when power dissipation is increased by continuous heavy overloads and short-circuits in the switch and finally cause the rise of the junction temperature. The device automatically recovers when it has sufficiently cooled down. The RT9712A/B are designed for the current limit at typically 2A and RT9712C/D are designed for the current limit at typically 1.5A. Internal circuitry controls the switch to remain off until valid input voltage is presented. Pin Configurations (TOP VIEW) GND VIN EN1 EN2 2 3 4 8 FLG1 7 VOUT1 6 VOUT2 ...