GENERAL DESCRIPTION
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. 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...
Richtek Technology
