IR3629MPBF - International Rectifier

IR3629MPBF HIGH FREQUENCY SYNCHRONOUS PWM BUCK CONTROLLER

The IR3629/IR3629A is a PWM controller designed for high performance synchronous Buck DC/DC applications. The IR3629/IR3629A drives a pair of external N-MOSFETs using a fixed 600kHz (300kHz “A version”) switching frequency allowing the use of small external components. The output voltage can be precisely regulated using the internal 0.6V reference voltage fo.

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• Internal 600kHz Oscillator (300kHz “A version”) Operates with Single 5V or 12V Supply Programmable Over Current Protection Hiccup Current Limit Using MOSFET RDS(on) sensing Precision Reference Voltage (0.6V) Programmable Soft-Start Programmable PGood output Pre-Bias Start-up Thermal Protection 12-Lead MLP Package Distributed Point-of-Loads Embedded Systems Storage Systems DDR Applications Graphics Cards Computing Peripheral Voltage Regulators General DC-DC Converters Applications Fig. 1: Typical application Circuit ORDERING INFORMATION PKG DESIG M M PACKAGE.