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DDR Termination Regulator

RT2568

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The RT2568 is a sink/source tracking termination regulator. It is specifically designed for low-cost and low-external component count systems. The RT2568 possesses a high speed operating amplifier that provides fast load transient response and only requires a minimum 10μF x 3 ceramic output capacitor. The RT2568 supports remote sensing functions and all features required to power the DDRIII and Low Power DDRIII / DDRIV VTT bus termination according to the JEDEC specification. In addition, the RT2568 provides an open-drain PGOOD signal to monitor the output regulation and an EN signal that can be used to discharge VTT during S3 (suspend to RAM) for DDR applications.

The RT2568 is available in the thermal efficient package, WDFN-10L 3x3.

Applications

  • Notebook/Desktop/Server
  • Telecom/Datacom, GSM Base Station, LCD-TV/PDP-TV, Copier/Printer, Set-Top Box
Key Spec.
RT2568
Status Active
Memory Supported DDRI;DDRII;DDRIII;DDRIV
Vin (min) (V) 1.1
Vin (max) (V) 3.5
VTT Output Tolerance (max) (+/- mV) 25
Isource/Isink (max) (A) 3
Standby Current (typ) (mA) 0.7
Current Limit (typ) (A) 4.5
Features Enable Input;OCP;Power Good
Package Type WDFN3x3-10
Features
  • VIN Input Voltage Range : 1.1V to 3.5V
  • VCNTL Input Voltage Range : 2.9V to 5.5V
  • Support Ceramic Capacitors
  • Power Good Indicator
  • 10mA Source/Sink Reference Output
  • Meet DDRI, DDRII JEDEC Spec
  • Support DDRI, DDRII, DDRIII and Low Power DDRIII/DDRIV VTT Applications
  • Soft-Start Function
  • UVLO and OCP Protection
  • Thermal Shutdown
Datasheet
TitleLast UpdateShareDownload
DDR Termination Regulator2015/01/27
Technical Documents
TitleLast UpdateShareDownload
Richtek Selection Guide [Oct., 2020]2020/12/30
Evaluation Boards
TitleLast UpdateShareDownload
DDR Termination Regulator2021/01/21
Part NumberPackage TypePackage Qty.Free SampleBuy From Authorized Distributor
RT2568GQWWDFN3x3-101500 Not available Buy from Distributor
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