Features and Benefits

  • Dual 4A Outputs
  • Configurable as Single Output, 2-Phase 8A Buck
  • High Efficiency: 12mΩ High-Side and 8mΩ Low-Side
  • ±1% Maximum Total DC Output Error
  • Wide Bandwidth, Fast Transient Response
  • VIN Range: 2.25V to 5.5V
  • VOUT Range: 0.5V to VIN
  • Programmable Frequency to 3MHz
  • Low Ripple Burst Mode® Operation with Low IQ
  • Shutdown Current: 1.4μA
  • 35ns Minimum On-Time
  • Internal Compensation
  • Precision Enable, Power Good for Power Sequencing
  • Tiny 30-Lead, 2.2mm × 2.7mm WLCSP Package

Product Details

The LTC3314A features dual monolithic synchronous 4A step-down converters in a 2.2mm × 2.7mm package for space saving applications with demanding performance requirements. Using a constant frequency, peak current mode architecture at switching frequencies up to 3MHz, both bucks achieve high efficiency and fast transient response with small external components. The LTC3314A can also be configured as a single output, 2-phase 8A step-down converter.

The LTC3314A operates in forced continuous or pulse-skipping mode for low noise, or in Burst Mode operation for high efficiency at light loads. The common switching frequency is set to a default 2MHz, programmed with an external resistor, or synchronized to an external oscillator via the MODE/SYNC pin. To reduce input ripple current, the dual converters switch 180 degrees out of phase.

With an input range of 2.25V to 5.5V the LTC3314A regulates to outputs as low as 500mV. Other features include precision enable thresholds, PGOOD signals, output overvoltage protection, thermal shutdown, and output short-circuit protection. The device is available in a 30-lead, 2.2mm × 2.7mm WLCSP package.


  • Servers, Telecom Power Supplies, Optical Networking
  • Distributed DC Power Systems (POL)
  • FPGA, ASIC, μP Core Supplies
  • Industrial/Automotive/Communications

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.

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.


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LTpowerCAD® is a power supply design program which selects power stage components, provides detailed power efficiency, shows quick loop Bode plot stability and load transient analysis, and can export to LTspice for simulation.


Design tools for the following parts are available in LTpowerCAD:


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.

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