Features and Benefits

  • High Per-Phase Current Capability
  • Footprint < 1600mm2 for a 150A VR
  • Precise Temperature Monitoring and Reporting through a Master Controller IC SMBus
  • Accurate Per-Phase Current Reporting Using a Master Controller IC
  • Top-side Cooling Allows Improved Heat Transfer to Ambient
  • Supplies UVLO/OVLO, Bootstrap Voltage UVLO, VX Short Protection
  • Overcurrent Protection
  • Overtemperature Protection—Fast Shutdown
  • Switching Frequency 300KHz—1.3MHz
  • Compatible With Coupled Inductor

Product Details

The VT1697SB is a feature-rich smart slave IC designed to work with Maxim’s seventh-generation masters to implement a high-density multiphase voltage regulator. Up to six smart slave ICs, plus a master IC, provide a compact synchronous buck converter that includes accurate individual phase-current and temperature reporting via SMBus/PMBus. This smart slave device includes protection circuits for overtemperature, VS short, all power supplies UVLO faults and main power supply OVLO fault. If a fault is detected, the slave IC will immediately shut down and send a fault signal to the master IC.

Monolithic integration and advanced packaging technologies allow practical per-phase, high switching frequencies with significantly lower losses than alternative implementations. Smart slave devices are designed to support phase-shedding and DCM modes for efficiency optimization over a wide range of load currents. High per-phase current-capability designs with low COUT enable a design with fewer phases and a smaller footprint.

The VT1697SB is packaged in a QFN package with exposed top-side thermal pads. Top-side cooling allows improved heat transfer to ambient and reduces PC board and component temperatures.


  • High-Current Voltage Regulators
  • Microprocessor: 32-Bit and 64-Bit I/A RISC Architectures
  • Memory
  • Networking ASICs
  • Graphic Processors

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (1)

Product Recommendations

VT1697SB Companion Parts

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Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

PCN-PDN Information

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