Controllers | NCP5220
概览
The NCP5220, 3-In-1 PWM a Dual Buck and Linear Power Controller, is a complete power solution for MCH and DDR memory. This IC combines the efficiency of PWM controllers for the VDDQ supply and the MCH core supply voltage with the simplicity of linear regulator for the VTT termination voltage.
- DDR Memory Power for Motherboards
- Incorporates Synchronous PWM Buck Controllers for VDDQ and VMCH
- Integrated Power FETs with VTT Regulator Source/Sink up to 2.0A
- All External Power MOSFETs are N-channel
- Adjustable VDDQ and VMCH by External Dividers
- VTT Tracks at Half the Reference Voltage
- Fixed Switching Frequency of 250 kHz for VDDQ and VMCH
- Doubled Switching Frequency (500 kHz) for VDDQ Controller in Standby Mode to Optimize Inductor Current Ripple and Efficiency
- Soft-start Protection for DDQ and VTT Regulators
- Under-Voltage Monitor of Supply Voltages
- Over-Current Protections for DDQ and VTT Regulators
- Fully Complies with ACPI Power Sequencing Specifications
- Short Circuit Protection Prevents Damage to Power Supply Due to Reverse DIMM Insertion
- Thermal Shutdown
- 5x6 QFN-20 Package
- Pb-Free Package is Available*
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