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DESCRIPTION

The IR3551 integrated PowIRstage? is a synchronous buck gate driver co-packed with a control MOSFET and a synchronous MOSFET with integrated Schottky diode. It is optimized internally for PCB layout, heat transfer and driver/MOSFET timing. Custom designed gate driver and MOSFET combination enables higher efficiency at lower output voltages required by cutting edge CPU, GPU and DDR memory designs.

FEATURES

? Peak efficiency up to 94.5 at 1.2V

? Integrated driver, control MOSFET, synchronous MOSFET and Schottky diode

? Input voltage (VIN) operating range up to 15V

? Output voltage range from 0.25V up to 3.3V

? Output current capability of 50A DC

? Operation up to 1.0MHz

? Integrated current sense amplifier

? VCC under voltage lockout

? Thermal flag

? Body-Braking? load transient support

? Diode-emulation high efficiency mode

? Compatible with 3.3V PWM logic and VCC tolerant

? Compliant with Intel DrMOS V4.0

? PCB footprint compatible with IR3550 and IR3553

? Efficient dual sided cooling

? Small 5mm x 6mm x 0.9mm PQFN package

? Lead free RoHS compliant package

APPLICATIONS

? Voltage Regulators for CPUs, GPUs, and DDR memory arrays

? High current, low profile DC-DC converters