1. Products
  2. Power Management
  3. Switching Regulators
  4. Step-Down (Buck) Regulators
  5. Multiple Output Buck Regulators
  6. ADP5056


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 Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

Evaluation Kits (2)

Tools & Simulations


LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.


Models for the following parts are available in LTspice:


Reference Designs (1)

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
ADP5056ACCZ-R7 Material Declaration Reliability Data 43-Terminal LGA (5mm x 5mm x 0.868mm)
Wafer Fabrication Data

Sample & Buy

Ordering FAQs

See our Ordering FAQs for answers to questions about online orders, payment options and more.


Buy Now Pricing

(**) Displayed Buy Now Price and Price Range is based on small quantity orders.


List Pricing

(*)The 1Ku list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


Lead Times

Please see the latest communication from our CCO regarding lead times.



A Sample link will be shown above, next to the part, only for parts that are included in our sample program. Selecting the Sample button will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.

Price Table Help


Evaluation Boards

Pricing displayed is based on 1-piece.

Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.

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.