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NCP5201

Part Number	NCP5201
Manufacturer	ON Semiconductor
Description	Dual Output DDR Power Controller
Published	Apr 25, 2007
Detailed Description	NCP5201 Dual Output DDR Power Controller The NCP5201 Dual DDR Power Controller is specifically designed as a total power...
Datasheet	NCP5201 PDF File

Overview

NCP5201 Dual Output DDR Power Controller The NCP5201 Dual DDR Power Controller is specifically designed as a total power solution for a high current DDR memory system.
This IC combines the efficiency of a PWM controller for the VDDQ supply with the simplicity of a linear regulator for the VTT memory termination voltage.
The secondary regulator (VTT) is designed to automatically track at half the primary regulator voltage (VDDQ).
An internal power good voltage monitor tracks both VDDQ and VTT outputs and notifies the user in the event of a fault on either output.
Protective features include soft−start circuitry and undervoltage monitoring of VCC and VSTBY.
The IC is packaged in a 5 × 6 QFN−18.
Features http://onsemi.
com MARKING DIAGRAM 1 1 NCP5201 AWLYYWW G G • • • • • • • • • • • • Incorporates VDDQ, VTT Regulators Internal Switching Standby Regulator for VDDQ All External Power MOSFETs Are N−Channel Adjustable VDDQ VTT Tracks VDDQ/2 Fixed Switching Frequency of 250 kHz for VDDQ in Normal Mode Doubled Switching Frequency (500 kHz) for Standby Mode www.
DataSheet4U.
com Soft−Start Protection for VDDQ Undervoltage Monitor Short−Circuit Protection for Both VDDQ and VTT Outputs Housed in a space saving 5 × 6 QFN−18 Pb−Free Packages are Available* 18−LEAD QFN, 5 x 6 mm MN SUFFIX CASE 505 A = Assembly Location WL = Wafer Lot YY = Year WW = Work Week G = Pb−Free Package (Note: Microdot may be in either location) PIN CONNECTIONS Typical Applications • DDR Termination Voltage • Active Termination Busses (SSTL−2, SSTL−3) FBDDQ FBVTT PGND VSTBY VTT VTT OCDDQ VDDQ NC 1 2 3 4 5 6 7 8 9 18 17 16 15 14 13 12 11 10 SS COMP VCC TGDDQ BGDDQ SDDQ AGND S3_EN PWRGD NOTE: Pin 19 is the thermal pad on the bottom of the device.
ORDERING INFORMATION Device NCP5201MN NCP5201MNG NCP5201MNR2 NCP5201MNR2G Package 18−Lead QFN 18−Lead QFN (Pb−Free) Shipping† 61 Units / Rail 61 Units / Rail 18−Lead QFN 2500/T ape & Reel 18−Lead QFN 2500/T ape & Reel (Pb−Free) *For additional informat...

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