6 A, 12-V Input Non-Isolated DDR/QDR Memory Bus Termination Module

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TPSM84624 ACTIVE 4.5V to 17V Input, 0.6V-10V Output, 6A Power Module in Compact 7.5x7.5mm Footprint This product offers a smaller-size QFN module and additional features such as light-load efficiency, power Good and remote sense.

Product details


Vin (Min) (V) 10.8 Vin (Max) (V) 13.2 Vout (Min) (V) 0.55 Vout (Max) (V) 1.8 Features Shutdown Pin for S3 Operating temperature range (C) -40 to 85 Iq (Typ) (uA) 10000 open-in-new Find other Buck modules (integrated inductor)

Package | Pins | Size

Surface Mount Module (EUV) 6 314 mm² 23.12 x 13.59 Through-Hole Module (EUU) 6 314 mm² 23.12 x 13.59 open-in-new Find other Buck modules (integrated inductor)


  • VTT Bus Termination Output (Output Tracks the System VREF)
  • 6 A Output Current (8 A Peak)
  • 3.3-V, 5-V or 12-V Input Voltage
  • DDR and QDR Compatible
  • On/Off Inhibit (for VTT Standby)
  • Under-Voltage Lockout
  • Operating Temp: –40 to +85°C
  • Efficiencies up to 88 %
  • Output Overcurrent Protection (Non-Latching, Auto-Reset)
  • 50 W/in³ Power Density
  • Safety Agency Approvals: UL/cUL60950, EN60950, VDE
  • Point-of-Load Alliance (POLA™) Compatible

POLA is a trademark of Texas Instruments.

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The PTHxx050Y are a series of ready-to-use switching regulator modules from Texas Instruments designed specifically for bus termination in DDR and QDR memory applications. Operating from either a 3.3-V, 5-V or 12-V input, the modules generate a VTT output that will source or sink up to 6 A of current (8 A transient) to accurately track their VREF input. VTT is the required bus termination supply voltage, and VREF is the reference voltage for the memory and chipset bus receiver comparators. VREF is usually set to half the VDDQ power supply voltage.

Both the PTHxx050Y series employs an actively switched synchronous rectifier output to provide state-of-the-art step-down switching conversion. The products are small in size (0.87 in × 0.5 in), and are an ideal choice where space, performance, and high efficiency are desired, along with the convenience of a ready-to-use module.

Operating features include an on/off inhibit and output over-current protection (source mode only). The on/off inhibit feature allows the VTT bus to be turned off to save power in a standby mode of operation.

Package options include both through-hole and surface mount configurations.

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Technical documentation

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Type Title Date
* Datasheet 6-A Non-Isolated DDR/QDR Bus Termination Modules datasheet (Rev. A) Apr. 28, 2005
Selection guide Power Management Guide 2018 (Rev. R) Jun. 25, 2018
Application note High-Temperatures Soldering Requirements for Plug-in Power, Surface-Mount Pdts (Rev. A) Aug. 13, 2009
Application note Input and Output Capacitor Selection Sep. 19, 2005
Application note New power modules improve surface-mount manufacturability Jul. 14, 2005

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Surface Mount Module (EUV) 6 View options
Through-Hole Module (EUU) 6 View options

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