Maxim Integrated MAX8550AETI

Description
The MAX8550A is an integrated power-supply solution for DDR memory applications in desktops, notebooks, and graphic cards. It includes a synchronous-buck PWM controller, a sourcing and sinking LDO linear regulator, and a 10mA reference output buffer. The buck controller drives two external n-channel MOSFETs to generate output voltages down to 0.7V from a 2V to 28V input with output currents up to 15A. The LDO can sink or source up to 1.5A continuous and 3A peak current. Both the LDO output and the 10mA reference buffer output can be made to track the REFIN voltage.

Features
Quick-PWM with 100ns Load-Step Response
Up to 95% Efficiency
2V to 28V Input Voltage Range
1.8V/2.5V Fixed or 0.7V to 5.5V Adjustable Output
Up to 600kHz Selectable Switching Frequency
Programmable Current Limit with Foldback Capability
1.7ms Digital Soft-Start
Independent Shutdown and Standby Controls
Overvoltage/Undervoltage-Protection Option
Power-Good Window Comparator
Fully Integrated VTT and VTTR Capability
VTT Has ±3A Sourcing/Sinking Capability
VTT and VTTR Outputs Track VREFIN/2
All-Ceramic Output-Capacitor Designs
1.0V to 2.8V Input Voltage Range
Power-Good Window Comparator

Applications
DDRI and DDR II Memory Power Supplies
Desktop Computers
Notebooks and Desknotes
Graphic Cards
Game Consoles
RAID
Networking