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Features and Benefits

  • Wide input voltage range: 2.75 V to 18 V
  • Bias input voltage range: 4.5 V to 18 V
  • Operation up to 150°C junction temperature
  • −0.62% to +0.69% feedback voltage accuracy (−40°C to +125°C junction temperature)
  • Channel 1 and Channel 2: 7 A synchronous buck regulator (9.4 A minimum valley current limit)
  • Channel 1 and Channel 2: 14 A output in parallel operation
  • Channel 3: 3 A synchronous buck regulator (4.2 A minimum valley current limit)
  • 250 kHz to 2500 kHz adjustable switching frequency
  • External compensation for fast load transient response
  • Precision enable pin with 0.615 V accurate reference voltage
  • Programmable power-up and power-down sequence
  • Selective FPWM/PSM mode selection
  • Frequency synchronization input or output
  • Power-good flag for three channels
  • Active output discharge switch
  • UVLO, overcurrent protection, and TSD protection
  • 43-terminal, 5 mm × 5.5 mm LGA package

Product Details

The ADP5056 combines three high performance buck regulators in a 43-terminal land grid array (LGA) package that meets the demanding performance and board space requirements. The device enables direct connection to high input voltages up to 18 V with no preregulators.

All channels integrate both high-side and low-side power metaloxide semiconductor field effect transistors (MOSFETs) to achieve an efficiency optimized solution. Channel 1 and Channel 2 deliver a programmable output current of 3.5 A or 7 A, or provide a single output with up to 14 A of current in parallel operation. Channel 3 delivers a programmable output current of 1.5 A or 3 A.

The switching frequency of the ADP5056 can be programmed or synchronized to an external clock. The ADP5056 contains an enable pin (ENx) on each channel for easy power-up sequencing or adjustable undervoltage lockout (UVLO) threshold.

The ADP5056 integrates start-up/shutdown sequence control, forced pulse-width modulation/power saving mode (FPWM/PSM) selection, an output discharge switch, and a power-good signal.

The ADP5056 is rated at −40°C to +150°C junction temperature.

Note that throughout this data sheet, multifunction pins, such as SYNC/MODE, are referred to either by the entire pin name or by a single function of the pin, for example, SYNC, when only that function is relevant.

  • Small cell base stations
  • Field programmable gate array (FPGA) and processor applications
  • Security and surveillance
  • Medical applications

Product Lifecycle icon-recommended Pre-Release

This product is new and engineering validation may still be underway. Quantities may be limited and design specifications may change while we ready the product for release to production.

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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.

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