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LTM4649 - 10A Step-Down DC/DC μModule (Power Module) Regulator

LTM4600 - 10A High Efficiency DC/DC µModule (Power Module)

Features

  • Complete Switch Mode Power Supply
  • Wide Input Voltage Range: 4.5V to 20V
  • 10A DC, 14A Peak Output Current
  • Parallel Two μModule® DC/DC Converters for 20A Output Current
  • 0.6V to 5V Output Voltage
  • 1.5% Output Voltage Regulation
  • Ultrafast Transient Response
  • Current Mode Control
  • RoHS Compliant Package
  • Up to 92% Efficiency
  • Programmable Soft-Start
  • Output Overvoltage Protection
  • Optional Short-Circuit Shutdown Timer
  • Small Footprint, Low Profile (15mm × 15mm × 2.82mm) Surface Mount LGA Package

Typical Application

LTM4600 Typical Application
LTM4600 Typical Application

Description

The LTM®4600 is a complete 10A, DC/DC step down power supply. Included in the package are the switching controller, power FETs, inductor, and all support components. Operating over an input voltage range of 4.5V to 20V, the LTM4600 supports an output voltage range of 0.6V to 5V, set by a single resistor. This high efficiency design delivers 10A continuous current (14A peak), needing no heat sinks or airflow to meet power specifications. Only bulk input and output capacitors are needed to finish the design.

The low profile package (2.82mm) enables utilization of unused space on the bottom of PC boards for high density point of load regulation. High switching frequency and an adaptive on-time current mode architecture enables a very fast transient response to line and load changes without sacrificing stability. Fault protection features include integrated overvoltage and short circuit protection with a defeatable shutdown timer. A built-in soft-start timer is adjustable with a small capacitor.

The LTM4600 is packaged in a compact (15mm × 15mm) and low profile (2.82mm) over-molded Land Grid Array (LGA) package suitable for automated assembly by standard surface mount equipment. The LTM4600 is RoHS compliant.

Packaging

CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.

For complete and up to date package information and drawings, please refer to our packaging page

Part Number Package Code Temp Package
Drawing		 RoHS
LTM4600EV#PBF 15mm × 15mm x 2.82mm LGA LGA E 05-08-1800 Yes
LTM4600IV#PBF 15mm × 15mm x 2.82mm LGA LGA I 05-08-1800 Yes


LTM4600 Package Drawing

Order Info

  • Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
  • Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
  • Please refer to our general ordering information or the product datasheet for more details

Package Variations and Pricing

Part Number Package Temp Price
(1-99)		 Price
(1k)*		 RoHS
LTM4600EV#PBF 15mm × 15mm x 2.82mm LGA E $22.32 $14.70 Yes
LTM4600IV#PBF 15mm × 15mm x 2.82mm LGA I $24.59 $16.20 Yes
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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 Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Part Number Description Price Documentation
DC823B-A LTM4600 Demo Board | 4.5V ≤ VIN ≤ 20V, Vout = 0.6V to 5V @ 10A $65.00
Buy Now
Click here to view our complete list of demo boards

Applications

  • Telecom and Networking Equipment
  • Servers
  • Industrial Equipment
  • Point of Load Regulation

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Design Tools

LTspice

LTspice® software is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice

To launch a ready to run LTspice demonstration circuit for this part:

  • Step 1: If you have not installed LTspice on this computer, download and install LTspice
  • Step 2: Once LTspice is installed, click on the link(s) below to launch the simulation
  • Step 3: If LTspice does not automatically open after clicking the link above, 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

To explore other ready to run LTspice demonstration circuits, please visit our Demo Circuits Collection.

Models for the following parts are available in LTspice:
LTM4600
LTM4600HV

LTpowerCAD

The LTpowerCAD design tool is a complete power supply design tool program that can significantly ease the tasks of power supply design. It guides users to a solution, selects power stage components, provides detailed power efficiency, shows quick loop bode plot stability and load transient analysis, and can export a final design to LTspice for simulation. Click here to download LTpowerCAD

Design tools for the following parts are available in LTpowerCAD:
LTM4600
LTM4600HV

Technical Support