LTM4644
LTM4644-1

RECOMMENDED FOR NEW DESIGNS

Quad DC/DC μModule (Power Module) Regulator with Configurable 4A Output Array

Data Sheet (Rev. G) Product Selection Table
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Overview

  • Quad Output Step-Down µModule® Regulator with 4A per Output
  • Wide Input Voltage Range: 4V to 14V
    • 2.375V to 14V with External Bias
  • 0.6V to 5.5V Output Voltage
  • 4A DC, 5A Peak Output Current Each Channel
  • Up to 5.5W Power Dissipation (TA = 60°C, 200 LFM, No Heat Sink)
  • ±1.5% Total Output Voltage Regulation
  • Current Mode Control, Fast Transient Response
  • Parallelable for Higher Output Current
  • Output Voltage Tracking
  • Internal Temperature Sensing Diode Output
  • External Frequency Synchronization
  • Overvoltage, Current and Temperature Protection
  • 9mm × 15mm × 5.01mm BGA Package
LTM4644
LTM4644-1
Quad DC/DC μModule (Power Module) Regulator with Configurable 4A Output Array
4V to 14V Input, Quad 0.9V, 1V, 1.2V and 1.5V Output DC/DC μModule Regulator* 1.5V Output Efficiency and Power Loss (Each Channel) Product Package 1
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Documentation

Data Sheet 1

User Guide 2

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Software Resources

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Hardware Ecosystem

Parts Product Life Cycle Description
Power System Management (PSM) & Sequencers 1
LTC2977
RECOMMENDED FOR NEW DESIGNS 8-Channel PMBus Power System Manager Featuring Accurate Output Voltage Measurement
Switching Regulators & Controllers 4
LTM4624
RECOMMENDED FOR NEW DESIGNS 14VIN, 4A Step-Down DC/DC μModule (Power Module) Regulator
LTM4619
RECOMMENDED FOR NEW DESIGNS Dual, 26VIN, 4A DC/DC μModule (Power Module) Regulator
LTM4628
PRODUCTION Dual 8A or Single 16A DC/DC μModule (Power Module) Regulator
LTM8001
RECOMMENDED FOR NEW DESIGNS 36VIN, 5A μModule Regulator with 5-Output Configurable LDO Array
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Tools & Simulations

LTspice 1

Models for the following parts are available in LTspice:

  • LTM4644
  • LTM4644-1

LTpowerCAD 3

Design tools for the following parts are available in LTpowerCAD:

  • LTM4644
  • LTM4644-1
LTspice

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.

LTpowerCAD

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.

Evaluation Kits

eval board
schematic 1
schematic 2
schematic 3
schematic 4
schematic 5
DC1900A

LTM4644 Demo Board | Quad Buck µModule Regulator, 4V ≤ VIN ≤ 14V, VOUT1 - VOUT4 = 3.3V/2.5V/1.5V/1.2V @ 4A Each

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Product Details

Demonstration circuit 1900A features the LTM4644EY μModule® regulator, a high-performance high-efficiency quad output step-down regulator. The LTM4644EY has an operating input voltage range of 4V to 14V and is able to provide up to 4A of output current from each of its phases. Each output’s voltage is programmable from 0.6V to 5.5V. The LTM4644EY is a DC/DC point of load regulator in a 9mm × 15mm × 5.01mm BGA package requiring only a few input and output capacitors.

eval board
schematic 6
schematic 7
schematic 8
schematic 9
DC2428A

LTC2975 Demo Board Set | LTM4644-1 Quad 4A Power Supply Management (includes DC2382A + DC2363A) [requires DC1613]

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Product Details

The DC2428A is a two-board demonstration system for the LTC2975 Power System Manager and LTM4644-1 quad 4A μModule regulator. The DC2382A contains all the circuitry needed to use the LTC2975 in a power system and control four power supplies. The DC2363A contains four power supplies (LTM4644-1) that the LTC2975 configures and controls. The DC2363A and DC2382A demo boards together provide a sophisticated 4-channel digitally programmable power supply system.
DC1900A
LTM4644 Demo Board | Quad Buck µModule Regulator, 4V ≤ VIN ≤ 14V, VOUT1 - VOUT4 = 3.3V/2.5V/1.5V/1.2V @ 4A Each
DC1900A Demo Board DC1900A Demo Board DC1900A Demo Board DC1900A Demo Board DC1900A - Schematic
DC2428A
LTC2975 Demo Board Set | LTM4644-1 Quad 4A Power Supply Management (includes DC2382A + DC2363A) [requires DC1613]
DC2428A Evaluation Board DC2428A Evaluation Board - Top View DC2428A Evaluation Board - Bottom View DC2428A - Demo Board Image

Reference Designs

Zynq UltraScale Board 922
Zynq UltraScale Board 922
ZYNQ UltraScale+ MPSOC
HTG-Z922 Xilinx ZYNQ® UltraScale+™ Actual Power Tree
HTG-Z922: Xilinx ZYNQ® UltraScale+™ MPSoC PCI Express Development Platform Circuits from the lab

View Detailed Reference Design

Features and Benefits

The HTG-Z922 provides access to large FPGA gate densities, wide range of I/O and expandable DDR4 memory for variety of different programmable applications. It is populated with the Xilinx Zynq Ultrascale+ ZU17-2 or ZU19-2 FPGA. Analog Devices power solution on this platform is fully validated to meet the requirements of Xilinx Zynq Ultrascale+ FPGAs to ensure a robust power delivery solution.

DC/DC μModule regulators are used on the HTG-Z922 to power Xilinx FPGA and/or SoC rails as well as other system rails. These regulators are highly integrated solutions with built in controller, power FETs, inductors, and capacitors that simplify layout and provide robust power delivery performance.

We provide supporting documentation including power schematics, layout, LTpowerPlanner and applicable LTpowerPlay configuration files to enable you to validate the power solution for your application seamlessly.

Ultrascale+ 910
Ultrascale+ 910
HTG-910 BD Block Diagram
HTG-910 Power Tree Picture
HTG-910: Xilinx Virtex UltraScale+™ Low-Profile PCI Express Development Platform Circuits from the lab

View Detailed Reference Design

Features and Benefits

The HTG-910 is low profile network card that provides access to eight lanes of PCI Express. It is populated with the Xilinx Zynq Virtex Ultrascale VU5P, VU9P, VU13P or Ultrascale VU190 FPGA. Analog Devices power solution on this platform is fully validated to meet the requirements of Xilinx Zynq Virtex Ultrascale FPGAs to ensure a robust power delivery solution.

DC/DC μModule regulators are used on the HTG-910 to power Xilinx FPGA and/or SoC rails as well as other system rails. These regulators are highly integrated solutions with built in controller, power FETs, inductors, and capacitors that simplify layout and provide robust power delivery performance.

We provide supporting documentation including power schematics, layout, LTpowerPlanner and applicable LTpowerPlay configuration files to enable you to validate the power solution for your application seamlessly.

LaywerScape Q or IQ - LS1043RDB
LaywerScape Q or IQ - LS1043RDB
QorIQ LS1043A Power Tree
NXP (Freescale) QorIQ LS1043A-RDB Circuits from the lab

View Detailed Reference Design

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
HTG-K816 Dev Kit
HTG-K816 Dev Kit
HTG-K816 Power Tree
Xilinx Kintex UltraScale Half-Size PCI Express Platform (HTG-K816) Circuits from the lab

View Detailed Reference Design

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
HTG-9100 900 Gb Optical Networking Platform
HTG-9100 900 Gb Optical Networking Platform
HTG-9100 Block Diagram
HTG-9100 Power Tree
Xilinx Virtex UltraScale Multi 100 Gig Optical Networking Platform Circuits from the lab

View Detailed Reference Design

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
Kintex UltraScale Board
Kintex UltraScale Board
UltraScale Board Block Diagram
HTG-K800 Power Tree
Xilinx Kintex UltraScale PCI Express Platform Circuits from the lab

View Detailed Reference Design

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
Xilinx Zynq Networking Platform
Xilinx Zynq Networking Platform
HTG-Z7-PCIE Block Diagram
HTG-Z7-PCIE Power Tree
Xilinx Zynq Networking Platform Circuits from the lab

View Detailed Reference Design

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
Virtex UltraScale Development Platform
Virtex UltraScale Development Platform
HTG-830 Power Tree
Xilinx Virtex UltraScale Development Platform Circuits from the lab

View Detailed Reference Design

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
HTG-Z922: Xilinx ZYNQ® UltraScale+™ MPSoC PCI Express Development Platform
Zynq UltraScale Board 922
ZYNQ UltraScale+ MPSOC
HTG-Z922 Xilinx ZYNQ® UltraScale+™ Actual Power Tree
HTG-910: Xilinx Virtex UltraScale+™ Low-Profile PCI Express Development Platform
Ultrascale+ 910
HTG-910 BD Block Diagram
HTG-910 Power Tree Picture
NXP (Freescale) QorIQ LS1043A-RDB
LaywerScape Q or IQ - LS1043RDB
QorIQ LS1043A Power Tree
Xilinx Kintex UltraScale Half-Size PCI Express Platform (HTG-K816)
HTG-K816 Dev Kit
HTG-K816 Power Tree
Xilinx Virtex UltraScale Multi 100 Gig Optical Networking Platform
HTG-9100 900 Gb Optical Networking Platform
HTG-9100 Block Diagram
HTG-9100 Power Tree
Xilinx Kintex UltraScale PCI Express Platform
Kintex UltraScale Board
UltraScale Board Block Diagram
HTG-K800 Power Tree
Xilinx Zynq Networking Platform
Xilinx Zynq Networking Platform
HTG-Z7-PCIE Block Diagram
HTG-Z7-PCIE Power Tree
Xilinx Virtex UltraScale Development Platform
Virtex UltraScale Development Platform
HTG-830 Power Tree

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