IR3623MPBF Datasheet | International Rectifier

Data Sheet No.PD94717 rev C .. IR3623MPb F HIGH FREQUENCY 2-PHASE, SINGLE OR DUAL OUTPUT SYNCHRONOUS STEP DOWN CONTROLLER WITH OUTPUT TRACKING AND SEQUENCING Description Features - - - - - - - - - - - - - - - - - - - - - - - 12V Dual Synchronous Controller with 180o Out of Phase Operation Configurable to 2-Independent Outputs or Current Share Single Output Output Voltage Tracking Power up /down Sequencing Current Sharing Using Inductor’s DCR +/-1% Accurate Reference Voltage Programmable Switching Frequency up 1200k Hz Programmable Over Current Protection Hiccup Current Limit Using MOSFET RDS(on) sensing Latched Overvoltage Protection Dual Programmable Soft-Starts Enable Pre-Bias Start-up Dual Power Good Outputs On Board Regulator External Frequency Synchronization Thermal Protection 32-Lead MLPQ Package Embedded Tele Systems Distributed Point of Load Power Architectures puting Peripheral Voltage Regulator Graphics Card General DC/DC Converters The IR3623 IC integrates a dual synchronous Buck controller, along with IP2003A it is providing a high performance and flexible solution. The IR3623 can be configured as 2-independent outputs or as current share single output. The current share configuration is ideal for high current applications. 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 and results to few number of capacitor quantity. The switching frequency is programmable from 200k Hz to 1200k Hz per phase using one external resistor, in addition IR3623 also allows the switching frequency to be synchronized to an external clock signal. Other key Features offered by this device include two independent programmable soft starts, two independent power good outputs, precision enable input and under voltage lockout function. The current limit is provided by sensing the lower MOSFET's...