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Controllers | NCP5210
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The NCP5210, 3-In-1 PWM Dual Buck and Linear DDR 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. This IC contains two synchronous PWM buck controller for driving four external N-Ch FET's to form the DDR memory supply voltage (VDDQ) and the MCH regulator. The DDR memory termination regulator (VTT) is designed to track at the half of the reference voltage with sourcing and sinking current.
- DDR I and DDR II Memmory and MCH Power Supply
- Incorporates Synchronous PWM Buck Controllers for VDDQ and VMCH
- Integrated Power FET's with VTT Regulator Source/Sink up to 2.0A
- All External Power MOSFET's 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 all Controllers
- 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 Packages are Available*
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