Description
The FAN5078 DDR memory regulator combines a highefficiency Pulse-Width Modulated (PWM) controller to generate the memory supply voltage, VDDQ, and a linear regulator to generate termination voltage (VTT).

FEATUREs
■ PWM regulator for VDDQ (2.5V or 1.8)
■ Linear LDO regulator generates VTT = VDDQ/2, 1.5A Peak sink/source capability
■ AMT / M-state support
■ Control to generate 5V USB
■ ACPI drive and control for 5V DUAL generation
■ 3.3V internal LDO for 3V-ALW generation
■ 300 kHz fixed frequency switching
■ RDS(ON) current sensing or optional current sense resistor for precision over-current detect
■ Internal synchronous boot diode
■ Common Power Good signal for all voltages
■ Input under-voltage lockout (UVLO)
■ Thermal shutdown
■ Latched multi-fault protection
■ Precision reference output for ULDO controllers
■ 24-pin 5 x 5 MLP package

APPLICATIONs
■ DDR VDDQ and VTT voltage generation with ACPI support
■ Desktop PCs
■ Servers