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Texas Instruments TPS51200 Sink/Source DDR Termination Regulator

Texas Instruments TPS51200 Sink/Source DDR Termination Regulator is specifically designed for low-input voltage, low-cost, low-noise systems where space is a crucial consideration. The TPS51200 maintains a fast transient response and only requires a minimum output capacitance of 20µF. The TPS51200 supports a remote sensing function. This device also supports all power requirements for DDR, DDR2, DDR3, Low-Power DDR3, and DDR4 VTT bus termination. The Texas Instruments TPS51200 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.

Features

  • Input voltage supports 2.5V rail and 3.3V rail
  • 1.1V to 3.5V VLDOIN voltage range 
  • Sink and source termination regulator includes droop compensation
  • Requires minimum output capacitance of 20µF (typically three × 10µF MLCCs) for memory termination applications (DDR)
  • PGOOD to monitor output regulation
  • EN input
  • REFIN input allows for flexible input tracking either directly or through a resistor divider
  • Remote sensing (VOSNS)
  • ±10mA buffered reference (REFOUT)
  • Built-in soft-start, UVLO, and OCL
  • Thermal shutdown
  • Supports DDR, DDR2, DDR3, DDR3L, low-power DDR3, and DDR4 VTT applications
  • 10-pin VSON package with thermal pad

Applications

  • Memory termination regulator for DDR, DDR2, DDR3, DDR3L, low-power DDR3 and DDR4
  • Notebooks, desktops, and servers
  • Telecom and datacom
  • Base stations
  • LCD-TVs and PDP-TVs
  • Copiers and printers
  • Set-top boxes

Datasheets

Functional Block Diagram

Block Diagram - Texas Instruments TPS51200 Sink/Source DDR Termination Regulator
Inilathala: 2017-03-10 | Na-update: 2025-08-01