TPS51200A-Q1 Sink and Source DDR Termination Regulator |

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Sink and Source DDR Termination Regulator



The TPS51200A-Q1 device is a sink and source double-data-rate (DDR) termination regulator specifically designed for low input voltage, low-cost, low-noise systems where space is a key consideration.

The device maintains a fast transient response and only requires a minimum output capacitance of 20 µF. The device supports a remote sensing function and all power requirements for DDR, DDR2, DDR3, and Low Power DDR3 and DDR4 VTT bus termination.

In addition, the device 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 device is available in the thermally-efficient VSON-10 package, and is rated both green and Pb-free. The device is specified from –40°C to 125°C.


  • AEC-Q100 Qualified for Automotive Applications:
    • Device Temperature Grade 1:
      –40°C ≤ TA ≤ 125°C
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C4B
  • Extended Reliability Testing
  • Input Voltage: Supports 2.5-V Rail and 3.3-V Rail
  • VLDOIN Voltage Range: 1.1 V to 3.5 V
  • Sink and Source Termination Regulator Includes Droop Compensation
  • Requires Minimum Output Capacitance of 20-µF (typically 3 × 10-µF MLCCs) for Memory Termination Applications (DDR)
  • PGOOD to Monitor Output Regulation
  • EN Input
  • REFIN Input Allows for Flexible Input Tracking Either Directly or Through Resistor Divider
  • Remote Sensing (VOSNS)
  • ±10-mA Buffered Reference (REFOUT)
  • Built-in Soft-Start, UVLO and OCL
  • Thermal Shutdown
  • Meets DDR, DDR2 JEDEC Specifications; Supports DDR3 and Low-Power DDR3 and DDR4 VTT Applications
  • VSON-10 Package With Exposed Thermal Pad

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Part number Order DDR memory type Control mode Iout VTT (Max) (A) Iq (Typ) (mA) Output Vin (Min) (V) Vin (Max) (V) Features Rating Operating temperature range (C) Package Group Package size: mm2:W x L (PKG)
TPS51200A-Q1 Order now DDR
3     0.5     VREF
1.1     3.5     S3/S5 Support     Automotive     -40 to 125     VSON | 10     10VSON: 9 mm2: 3 x 3 (VSON | 10)