Controllers | NCP5209

The NCP5209 4-In-1 PWM Buck and Tri-Linear Power Controller is a complete ACPI compliant power solution for MCH and DDR memory. This IC combines the high efficiency of a PWM controller for the VDDQ supply with the simplicity of linear regulator for the VTT termination voltage as well as the MCH core supply voltage. This IC contains a synchronous PWM buck controller for driving two external N-Ch FET's to form the DDR memory supply voltage (VDDQ). The DDR memory termination regulator (VTT) is designed to track at the half of reference voltage while sourcing and sinking current. The two linear regulator controllers driving two external N-Ch FET's are cascaded to produce the MCH core voltage (VMCH).