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