1. Products
  2. Power Monitor, Control, and Protection
  3. Digital Power System Management
  4. Buck Regulators with Digital Power System Management
  5. MAX20796


Features and Benefits

  • Peak Efficiency 92%; Full-Load Efficiency 90% at VIN = 12V, VOUT = 1V
  • Operating Input Voltage Range 4.5V to 16V
  • Output Voltage Range is 0.5V to 5.5V
  • Output Boot Voltage Pin-Strapped Range 0.5V to 5.0V with Direct Feedback
  • Integrated Loop Compensation
  • Supports Coupled and Discrete Inductors
  • PMBus Revision 1.3 Compliant Interface
  • Supports External Power Stage to Increase Power Capacity
  • Internal Linear Regulators Allow Operation from One Supply Voltage
  • Optional External LDO FET for Enhanced Thermal Performance
  • Pin-Strapped Configurable Operating Parameters:
    • 32 PMBus Addresses
    • Output Voltage
    • Switching Frequency
    • Overcurrent Protection (OCP) Threshold
    • Soft-Start Time
    • Loop Compensation
  • Supports Nonvolatile PMBus Command Storage (Five Writes Available)
  • Continuous Conduction Mode Operation Only
  • Integrated Accurate Current and Temperature Sensing
  • Monotonic Startup and Shutdown, Supports Prebias Startup (Two Phase)
  • Fast Peak and Average Overcurrent Protection
  • Active-Low RESTORE Input Pin Resets Output Voltage
  • Operating Junction Temperature Range: -40°C to +125°C
  • Package: 35-pin, 4mm ×10.5mm, 0.5mm pitch, FC2QFN

Product Details

The MAX20796 offers a fully integrated, highly efficient, two-phase switching regulator for applications operating from 4.5V to 16V and requiring up to 60A maximum load or 90A with an optional third-phase external power stage. The output voltage range can be configured from 0.5V to 5.5V with some restrictions on duty cycle. The switching regulator uses a fixed-frequency control scheme providing an extremely compact, fast, and accurate power delivery solution for server and telecom applications. Integrated linear regulators allow single-supply operation. To further improve system efficiency and thermal performance, an external 3.3V supply or FET can be used to generate the core supply.

Key system parameters are configured by external resistors, including the selection of soft-start timing, output voltage, switching frequency, PMBus™ address, overcurrent trip point, and loop control parameters. The device operates with either coupled or discrete inductors. Coupled inductor technology offers high performance with a minimum number of input and output capacitors for best-in-class solution cost.

The MAX20796 includes fault protection and reporting capabilities. Inherent positive and negative overcurrent and overtemperature protection ensure a rugged design. Input undervoltage lockout shuts down the device when the input voltage is out of specification. Regulation is halted if the output voltage is outside of a programmable range. A PGOOD pin provides an output signal to show that the output voltage is within range and the system is regulating.

The MAX20796 is offered in a 35-pin, 4mm × 10.5mm FC2QFN package, ideal for use in networking and communication end equipment.

The device is also available as MAX20796A, which is preconfigured for a 1V, 800kHz application with LEAD_LAG enabled.


  • Communication, Networking, Servers and Storage Equipment
  • I/O and Auxiliary Power
  • Memory VDDQ
  • Microprocessor Chipsets
  • Point-of-Load Voltage Regulators

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 (3)

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.View our quality and reliability program and certifications for more information.

Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
MAX20796AGFB+ Material Declaration Reliability Data Flip-Chip Quad Flatpack, No Leads
MAX20796AGFB+T Material Declaration Reliability Data Flip-Chip Quad Flatpack, No Leads
MAX20796GFB+ Material Declaration Reliability Data Flip-Chip Quad Flatpack, No Leads
MAX20796GFB+T Material Declaration Reliability Data Flip-Chip Quad Flatpack, No Leads
Wafer Fabrication Data MAX20796 Reliability Data

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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.