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ADP2116:  Configurable, Dual 3 A/Single 6 A, Synchronous, Step-Down DC-to-DC Regulator

Product Details

Product Status:Recommended for New Designs

The ADP2116 is a versatile, synchronous, step-down switching regulator that satisfies a wide range of customer point-of-load requirements. The two PWM channels can be configured to deliver independent outputs at 3 A and 3 A (or at 3 A and 2 A) or can be configured as a single interleaved output capable of delivering 6 A. The two PWM channels are 180° phase shifted to reduce input ripple current and input capacitance. The ADP2116 provides high efficiency and can operate at switching frequencies of up to 2 MHz. At light loads, the ADP2116 can be set to operate in pulse skip mode for higher efficiency or in forced PWM mode for noise sensitive applications.

The ADP2116 is designed with an optimized slew rate to reduce EMI emissions, allowing the device to power sensitive, high perfor-mance signal chain circuits. The switching frequency can be set to 300 kHz, 600 kHz, or 1.2 MHz, or it can be synchronized to an external clock that minimizes the system noise. The bidirectional synchronization pin is also configurable as a 90° out-of-phase output clock, providing the possibility for a stackable multiphase power solution.

The ADP2116 input voltage range is from 2.75 V to 5.5 V and can convert to a fixed output of 0.8 V, 1.2 V, 1.5 V, 1.8 V, 2.5 V, or 3.3 V that can be set independently for each channel using external resistors. If a resistor divider is used, the output voltage can be set as low as 0.6 V. The ADP2116 operates over the −40°C to +125°C junction temperature range.

  • Point-of-load regulation
  • Telecommunications and networking systems
  • Consumer electronics
  • Industrial and instrumentation
  • Medical


  • Configurable 3 A/3 A or 3 A/2 A dual-output load combinations or 6 A combined single-output load
  • High efficiency: up to 95%
  • Input voltage, VIN: 2.75 V to 5.5 V
  • Selectable fixed output voltage of 0.8 V, 1.2 V, 1.5 V, 1.8 V, 2.5 V, or 3.3 V, or adjustable output voltage to 0.6 V minimum
  • ±1.5% accurate reference voltage
  • Selectable switching frequency of 300 kHz, 600 kHz, 1.2 MHz, or synchronized from 200 kHz to 2 MHz'/
  • Optimized gate slew rate for reduced EMI
  • External synchronization input or internal clock output
  • Dual-phase, 180° phase-shifted PWM channels
  • Current mode for fast transient response
  • Pulse skip mode with light loads or forced PWM operation
  • See data sheet for additional features

Functional Block Diagram for ADP2116


Title Content Type File Type
ADP2116: Configurable, Dual 3 A/Single 6 A, Synchronous, Step-Down DC-to-DC Regulator (Rev A, 06/2012) (pdf, 3021 kB) Data Sheets PDF
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Design Tools,Models,Drivers & Software

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ADP2114/16 Dual Buck Regulator Design Tool  (zip, 0)
Microsoft Excel download tool from ADIsimPower to generate a power supply design complete with a schematic, bill of materials, and performance specifications.
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The individual Excel-based voltage regulator design tools used in ADIsimPower™.
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ADIsimPower™ Voltage Regulator Design Tool
This expert design tool produces custom DC-DC converter designs in about a minute. The user enters 5 inputs and chooses to optimize for efficiency, PCB space, cost, or part count. Output is a complete schematic, BOM, efficiency plot, and performance summary. A PDF summary and a blank PCB is offered for each design to facilitate fast prototyping to verify the design.
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The USA 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. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

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