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Enhanced Product Complete DDR2, DDR3 and DDR3L Memory Power Solution Synchronous Buck Controller


Package | PIN: RUK | 20
Temp: M (-55 to 125)
Carrier: Cut Tape
Qty Price
1-9 $10.95
10-24 $9.85
25-99 $9.20
100-249 $8.25
250-499 $7.70
500-749 $6.70
750-999 $5.80
1000+ $5.68


  • Synchronous Buck Controller (VDDQ)
    • Conversion Voltage Range: 3 to 28 V
    • Output Voltage Range: 0.7 to 1.8 V
    • 0.8% VREF Accuracy
    • D-CAP Mode for Fast Transient Response
    • Selectable 300-kHz/400-kHz Switching Frequencies
    • Optimized Efficiency at Light and Heavy Loads With Auto-Skip Function
    • Supports Soft-Off in S4/S5 States
    • OCL/OVP/UVP/UVLO Protections
    • Powergood Output
  • 2-A LDO (VTT), Buffered Reference (VTTREF)
    • 2-A (Peak) Sink and Source Current
    • Requires Only 10-µF of Ceramic Output Capacitance
    • Buffered, Low Noise, 10-mA VTTREF Output
    • 0.8% VTTREF, 20-mV VTT Accuracy
    • Support High-Z in S3 and Soft-Off in S4/S5
  • Thermal Shutdown
  • 20-Pin, 3 mm × 3 mm, WQFN Package
  • Supports Defense, Aerospace, and Medical Applications
    • Controlled Baseline
    • One Assembly/Test Site
    • One Fabrication Site
    • Available in Military (-55°C to 125°C) Temperature Range(1)
    • Extended Product Life Cycle
    • Extended Product-Change Notification
    • Product Traceability

Texas Instruments  TPS51216MRUKREP

The TPS51216-EP provides a complete power supply for DDR2, DDR3 and DDR3L memory systems in the lowest total cost and minimum space. It integrates a synchronous buck regulator controller (VDDQ) with a 2-A sink/source tracking LDO (VTT) and buffered low noise reference (VTTREF). The TPS51216-EP employs D-CAP mode coupled with 300 kHz/400 kHz frequencies for ease-of-use and fast transient response. The VTTREF tracks VDDQ/2 within excellent 0.8% accuracy. The VTT, which provides 2-A sink/source peak current capabilities, requires only 10-µF of ceramic capacitance. In addition, a dedicated LDO supply input is available.

The TPS51216-EP provides rich useful functions as well as excellent power supply performance. It supports flexible power state control, placing VTT at high-Z in S3 and discharging VDDQ, VTT, and VTTREF (soft-off) in S4/S5 state.

Programmable OCL with low-side MOSFET RDS(on) sensing, OVP/UVP/UVLO and thermal shutdown protections are also available.

The TPS51216-EP is available in a 20-pin, 3 mm × 3 mm, WQFN package and is specified for junction temperature from -55°C to 125°C.