Part Number: TPS51206DSQR

Manufacturer: Texas Instruments

Description: IC REG CONV DDR 1 OUT 10SON

Shipped from: Shenzhen/HK Warehouse

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Technical Specifications of TPS51206DSQR

Datasheet  TPS51206DSQR datasheet
Category Integrated Circuits (ICs)
Family PMIC – Voltage Regulators – Special Purpose
Manufacturer Texas Instruments
Packaging Tape & Reel (TR)
Part Status Active
Applications Converter, DDR
Voltage – Input 3.1 V ~ 6.5 V
Number of Outputs 1
Voltage – Output 0.5 V ~ 0.9 V
Operating Temperature -40°C ~ 85°C
Mounting Type Surface Mount
Package / Case 10-WFDFN Exposed Pad
Supplier Device Package 10-SON (2×2)

TPS51206DSQR Description

The TPS51206 is a dual-purpose (sink or source) double data rate termination regulator with a buffered reference output called VTTREF. It was created for small, space-constrained devices that just need a low input voltage and minimal external components. The ceramic output capacitance required to maintain the device’s rapid transient responsiveness is only 1 x 10-F.

The device offers a remote sensing feature and meets all power requirements for DDR2, DDR3, DDR3L, and DDR4 on the VTT bus. A VTT can carry up to 2 A of current in total. The device is compatible with all five DDR power modes, making it feasible to discharge VTT and VTTREF in S4 or S5 and put VTT to High-Z in the S3 state (suspend to RAM) (suspend to disk). The TPS51206 has a -40°C to 105°C working temperature range and is packaged in a 10-Pin, 2 mm by 2 mm SON (DSQ) PowerPADTM packaging.

TPS51206DSQR Features

  • Both 3.3V, and 5V power sources are supported.
  • The input voltage range for the VLDOIN is from VTT+0.4 V to 3.5 V.
  • accepts input from S3 and S5, enabling High-Z in S3 and Soft-Stop in S4 and S5, respectively.
  • Avoid getting too hot.
  • Packing for ten-pin SON (DSQ), 2 mm x 2 mm.

TPS51206DSQR Applications

  • There is a memory power supply for DDR2, DDR3, DDR3L, and DDR4 technologies.
  • SSTL 18, SSTL 15, SSTL 135, and HSTL are all finished.
  • A GSM base station, photocopiers, flat-panel and projection televisions, telephone and data networks, and television set-top boxes are a few examples of today’s technology.

TPS51206DSQR Detailed Description

The TPS51206 is a double data rate termination regulator that offers a VTTREF buffered reference output and can be used as a drain or a source.

Detailed Features

● Sink and Source Regulator for VTT

The TPS51206, a sink or source tracking termination regulator optimized for low input voltage, low cost, and low external component count applications, was created in response to space limitations. In all circumstances, a high-performance, low-dropout linear regulator (VTT) with an ultimate swift reaction to track 1.2 VDDQSNS within 40 mV and a current capability of 2 A in both the sink and source directions is incorporated into the device. A 10 F (or more) ceramic capacitor should be attached close to the VTT terminal to guarantee consistent performance. It is advisable to grade at or above an X5R.

The remote sensing terminal should be linked to the output capacitor’s positive terminal of the output capacitor(s) via a trace distinct from the high current path from the VTT pin to guarantee tight regulation with the least trace resistance. The VTT power supply is assigned one of the device’s pins, VLDOIN, which lessens the burden on the LDO and helps conserve energy. The minimum 1/2 VDDQSNS must be at least 0.4 V greater than VLDOIN.


The VTTREF pin follows VDDQSNS to within 1% and can supply or sink 10 mA of current. Keep the VTTREF pin connected at all times. A 0.22 uF ceramic capacitor, ideally of the X5R grade, must be attached close to the VTTREF terminal for reliable operation.

● Protections Against VDD Diminishes required voltage

The input voltage (VDD) of the TPS51206 includes undervoltage protection (UVLO). When the voltage on the VDD pin falls below the UVLO threshold value, both VTT and VTTREF are deactivated. These safety measures don’t rely on a latching mechanism.

● Limit for VTT Current

The TPS51206 is a component that can restrict the current passing via a VTT source or sink. The VTT voltage will be uncontrolled if the VTT current exceeds 2 A. The VTT voltage is within specifications when it is under 2 A. These safety measures don’t rely on a latching mechanism.

● Defense Against Overheating

The device’s internal temperature can be checked. In the event that the temperature exceeds a specific level, VTT and VTTREF are disabled. As there is no latch system, using it is secure.

Functional Modes for Devices

● Power Status Management

Two control input pins—S3 and S5—included in the TPS51206 permit simple manipulation of the device’s power state. Table 1 lists the VTTREF and VTT outputs connected to the logic states of the S3 and S5 terminals. By putting it in its high impedance (High-Z) mode, S3 disables VTT. The VTT output is floating and not acting as a source or sink of current in this situation. When S5 and S3 are LOW, the power status is S4 and 5. In S4 and S5, all outputs are turned off and drained to GND.

● Common Applications

Charger for a battery A ceramic capacitor of 0.1 F (or more) and X5R grade (or better) should be installed close to the VDD terminal to avoid the bias supply voltage from being hampered by parasitic impedance from the power supply rail.

● Capacitor VLDOIN

VLDOIN bulk power supplies might be problematic if the trace impedance between the supply and the device is too high; most of the charge during a transient rise of source current is supplied by the VLDOIN input capacitor. A ceramic capacitor with a capacitance of 10 F and an X5R grade or higher is your best option if you need to supply a sudden surge of electricity.


A 0.22 F ceramic capacitor of X5R grade (or better) should be attached close to the VTTREF terminal to guarantee reliable operation.

● Capacitor VTT

For dependable operation, attaching one or more ceramic capacitors with a value of 10 F and an X5R grade or above is advised. To reduce the quantity of equivalent series resistance (ESR) and equivalent series inductance (ESL) in the ground trace, it is advised that this capacitor be used in series between the PGND terminal and the VTT capacitor (s).

● VTTSNS Relationship

Connecting the remote sensing VTTSNS pin to the positive terminal of the output capacitor of the VTT pin will result in tight regulation with no impact on trace resistance (s). A low-pass R-C filter may need to be connected to the VTTSNS pin if the equivalent series resistance (ESR) of the VTT output capacitor is more than 2 m. The time constants for the ESR and VTT output capacitance should be similar to or slightly less than those of the R-C filter.


Finally, the TPS51206 device is a great option for low-input-voltage, space-constrained systems that need extremely efficient and low-cost DDR termination regulation. This device is both reliable and flexible due to its many functions, such as remote sensing, power state management, overtemperature protection, VDD undervoltage lockout protection, and VTT current restriction, all of which make it well-suited for a wide range of uses.

If you’re interested in taking advantage of this unique tool, you can do so by placing an order with ICRFQ, a dependable provider of premium electrical components. ICRFQ has excellent products and outstanding customer service, ensuring you receive the best possible experience. Don’t hesitate any longer to enhance your project’s performance; order the TPS51206 now!

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