The IR3623 IC is a high performance Synchronous Buck PWM Controller that can be configured for two independent outputs or as a current sharing single output. Since the IC does not contain integrated MOSFET drivers it is ideal for controlling iPOWIRTM integrated power stage modules such as the iP2005 series of products. IR3623 enables output tracking and sequencing of multiple rails in either ratiometric or simultaneous fashion. The IR3623 features 180o out of phase operation which reduces the required input/output capacitance. The switching frequency is programmable from 200kHz to 1200kHz per phase by use of an external resistor or the switching frequency can be synchronized to an external clock signal. Other key features offered by the IR3623 include; two independent programmable soft starts, two independent power good outputs, precision enable input and under voltage lockout. The current limit is provided by sensing the low side MOSFET's on-resistance for optimum cost and performance. The output voltages are monitored through dedicated pins to protect against open circuit and to improve response time to an overvoltage event.