TPS51206DSQR-P Texas Instruments Integrated Circuit (Small Outline No-lead) In Stock
The TPS51206DSQR-P is a DDR termination regulator and reference voltage controller from Texas Instruments, designed to supply VDDQ and VTT rails for DDR2, DDR3, and LPDDR3 memory interfaces. It integrates a tracking linear regulator and a sink/source capable termination output, delivering up to 1.5 A continuous current in a compact 10-pin 2 mm × 2 mm SON PowerPAD package. Ideal for notebook, tablet, and embedded computing platforms requiring low-latency DDR power management.
- Manufacturer
- Texas Instruments
- Package
- Small Outline No-lead
- Pin Count
- 11
- Lifecycle
- ACTIVE
- Datasheet
- TPS51206DSQR-P Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- DDR2/DDR3/LPDDR3 compatible VTT termination regulator with 1.5 A sink/source capability
- Integrated VREF output at VDDQ/2 for DDR reference voltage generation
- Automatic tracking: VTT follows VDDQ/2 for all DDR voltages
- Supports suspend-to-RAM (STR) low-power state with VDDQ hold
- Compact 10-pin 2 mm × 2 mm SON PowerPAD package minimizes board area
- Wide input voltage range compatible with 3.3 V and 5 V system rails
Applications
The TPS51206DSQR-P is primarily used in laptop and ultra-thin notebook computers to power the DDR3 or LPDDR3 memory termination rail, where accurate VTT tracking and fast transient response are critical for memory signal integrity. It is also employed in embedded computing modules, single-board computers, and industrial fanless systems requiring a reliable, space-saving DDR power solution. The device's suspend-to-RAM support makes it well suited for energy-efficient platforms that frequently enter low-power sleep states.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for TPS51206DSQR-P:
Dual Switching Controller, Voltage-mode, 1.5A, 500kHz Switching Freq-Max, BICMOS, PDSO30
Frequently Asked Questions
Which DDR memory standards are compatible with TPS51206DSQR-P?
TPS51206DSQR-P is compatible with DDR2, DDR3, and LPDDR3 memory standards. It generates the VTT termination voltage by accurately tracking half of the VDDQ rail, which can range from 1.2 V for LPDDR3 to 1.8 V for DDR2. The integrated VREF output automatically follows at VDDQ/2, meeting JEDEC requirements for all three standards.
How much continuous termination current can TPS51206DSQR-P source and sink?
TPS51206DSQR-P can both source and sink up to 1.5 A of continuous current at the VTT output. This bidirectional capability is essential for DDR termination, where the termination resistors draw or return current depending on the instantaneous signal state, and ensures stable VTT voltage under dynamic memory bus loading conditions.
How does the PowerPAD in the 10-pin SON package benefit thermal performance on a motherboard?
The exposed PowerPAD on the underside of the 2 mm × 2 mm SON package provides a low-resistance thermal path directly to the PCB ground plane, reducing junction-to-board thermal resistance significantly. At a 1.5 A load with a 200 mV input-to-output differential, the device dissipates approximately 300 mW, and the PowerPAD keeps junction temperature well below the 125°C rated maximum even without a heatsink.
Does TPS51206DSQR-P support suspend-to-RAM operation for notebook power management?
Yes, TPS51206DSQR-P supports suspend-to-RAM (STR) operation. During STR, the VDDQ rail is held at its active level while the VTT output is placed into a high-impedance tri-state, reducing current consumption to microampere levels. This behavior complies with DDR3 and LPDDR3 power sequencing requirements and extends battery life in notebooks and tablets during sleep states.
For a DDR3 design at 1.5 V VDDQ, what reference voltage does TPS51206DSQR-P generate?
At 1.5 V VDDQ, TPS51206DSQR-P generates a VREF output of 0.75 V, which is exactly VDDQ/2 as required by the DDR3 JEDEC specification. The VTT termination output also tracks at 0.75 V, ensuring proper signal termination for high-speed DDR3 data rates up to 1600 MT/s on the memory bus.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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