LTC3613
Info : RECOMMENDED FOR NEW DESIGNS
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LTC3613

24V, 15A Monolithic Step Down Regulator with Differential Output Sensing

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 4
1ku List Price Starting From $11.55
Features
  • Wide VIN Range: 4.5V to 24V; VOUT Range: 0.6V to 5.5V at up to 15A
  • 0.67% Output Voltage Accuracy
  • Controlled On-Time Valley Current Mode Architecture, Excellent Current Sharing Capability
  • Frequency Programmable from 200kHz to 1MHz and Synchronizable to External Clock
  • RSENSE or Inductor DCR Current Sensing With Accurate Current Limit
  • Fast Transient Response
  • Differential Output Voltage Sensing Allowing 500mV Common Mode Remote Ground
  • tON(MIN) = 65ns; tOFF(MIN) = 105ns
  • Overvoltage Protection and Current Limit Foldback
  • Power Good Output Voltage Monitor
  • Voltage Tracking Start-Up
  • External VCC Input for Bypassing Internal LDO
  • Micropower Shutdown: IQ = 15μA
  • 7mm × 9mm 56-pin QFN Package
Additional Details
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The LTC3613 is a monolithic synchronous step-down switching regulator capable of regulating outputs from 0.6V to 5.5V with up to 15A output current. The controlled on-time constant frequency valley current mode architecture allows for both fast transient response and constant frequency switching in steady-state operation, independent of VIN, VOUT and load. This also provides excellent current sharing capability.

Differential output voltage sensing along with a precision internal reference combine to offer ±0.67% output regulation, even if the output ground reference deviates from local ground by 500mV. The switching frequency can be programmed from 200kHz to 1MHz with an external resistor. The switching frequency is also phase synchronizable to an external clock in applications where switching noise/EMI reduction is crucial.

Very low tON and tOFF times allow for near 0% and near 100% duty cycles, respectively. Voltage tracking soft start-up is provided for tracking and sequencing applications. Safety features include output overvoltage protection, programmable current limit with foldback, and power good monitoring.

Applications

  • Distributed Power System
  • Point-of-Load Converters
  • Servers
Part Models 4
1ku List Price Starting From $11.55

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LTC3613EWKH#PBF
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LTC3613EWKH#TRPBF
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LTC3613IWKH#PBF
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LTC3613IWKH#TRPBF
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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

reference details image

DC1700A

LTC3613EWKH Demo Board | VIN = 4.5V to 24V, VOUT = 1.5V @ 15A

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DC1700A

LTC3613EWKH Demo Board | VIN = 4.5V to 24V, VOUT = 1.5V @ 15A

LTC3613EWKH Demo Board | VIN = 4.5V to 24V, VOUT = 1.5V @ 15A

Product Detail

Demonstration circuit 1700A is a fast, high efficiency synchronous buck DC/DC converter with 4.5V to 24V input range. It can supply 15A maximum load current at 1.5V output. The demo board features the LTC3613EWKH regulator. No external MOSFETs are required.


The controlled on-time constant frequency valley current mode architecture allows for both fast transient response and constant frequency switching in steady-state operation.

Tools & Simulations

Tools & Simulations 2

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.

To launch ready-to-run LTspice demonstration circuits for this part:

Step 1: Download and install LTspice on your computer.

Step 2: Click on the link in the section below to download a demonstration circuit.

Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.

Reference Designs

Reference Designs 2

DK-DEV-5CGTD9N Dev Kit

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altera-cyclone-v-gt-fpga-development-kit

altera-cyclone-v-gt-fpga-development-kit

Circuits from the lab

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Features and Benefits

  • Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
  • Our reference designs are supported by an intuitive design tool set and IP
  • Our team can provide designs for quick prototypes that can speed time to market in the most complex applications
View Detailed Reference Design external link
DC934A Demo Board for DK-DEV-5CSXC6N

zoomopens a dialog

altera-cyclone-v-soc-development-kit-and-soc-embedded-design-suite

altera-cyclone-v-soc-development-kit-and-soc-embedded-design-suite

Circuits from the lab

tooltip Info:Circuits from the lab

Features and Benefits

  • Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
  • Our reference designs are supported by an intuitive design tool set and IP
  • Our team can provide designs for quick prototypes that can speed time to market in the most complex applications
View Detailed Reference Design external link

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