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