Controllers | NCP5203

2-in-1 DDR Power Controller

Obsolete

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The NCP5203 2-in-1 DDR Power Controller is a complete power solution for an ACPI compliant high current DDR memory system. This IC combines the efficiency of a PWM controller for the VDDQ supply with the simplicity of linear regulator for the VTT termination voltage. The NCP5203 contains a synchronous PWM buck controller for driving two external NFETs to form the DDR memory supply voltage (VDDQ). The +/- 2.0A user adjustable VTT terminator regulator has short circuit protection. An internal power good function monitors both the VDDQ and VTT outputs and signals if a fault occurs. Protective features include soft-start, under-voltage monitoring of 5VDUAL, over current protection (OCP), and thermal shutdown. The IC is packaged in 18-lead QFN.

  • Desktop DDR Memory
  • Graphics Card DDR Memory

  • Incorporates VDDQ, VTT Regulators
  • Operates from Single 5.0V Supply
  • All External Power MOSFETs are N-Channel
  • Adjustable VDDQ
  • Adjustable VTT
  • Fixed Switching Frequency of 300 kHz for VDDQ in S0
  • Fixed Switching Frequency of 600 kHz for VDDQ in S3
  • Soft-Start Protection for VDDQ
  • Undervoltage Monitor of 5VDUAL
  • Short-Circuit Protection VDDQ and VTT
  • Thermal Shutdown
  • Housed in QFN-18
  • VTT Regulator includes Integrated Power FETs Sourcing/Sinking up to 2.0A
  • Pb-Free Package is Available*

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NCP5203MNR2

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Obsolete

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CAD Model

Pb

A

H

P

DFN-18

505

2

235

REEL

2500

N

-

1

Voltage Mode

4.5

5.5

300

Price N/A

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NCP5203MNR2G

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Obsolete

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CAD Model

Pb

A

H

P

DFN-18

505

1

260

REEL

2500

N

-

1

Voltage Mode

4.5

5.5

300

Price N/A

More Details

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