LTM4632
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LTM4632

Ultrathin, Triple Output, Step-Down μModule Regulator for DDR-QDR4 Memory

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 5
1ku List Price Starting From $8.66
Features
  • Complete DDR-QDR4 SRAM Power Solution Including VDDQ, VTT, VTTR (or VREF)
  • Solution in 0.5cm2 (Dual-Sided PCB)
  • Wide Input Voltage Range: 3.6V to 15V
  • 3.3V Input Compatible with VIN Tied to INTVCC
  • 0.6V to 2.5V Output Voltage Range
  • Dual ±3A DC Output Current with Sink and Source Capability
  • ±1.5%, ±10mA Buffered VTTR = VDDQ/2 Output
  • 3A VDDQ + 3A VTT or Dual Phase Single 6A VTT
  • ±1.5% Maximum Total Output Voltage Regulation Error Over Load, Line and Temperature
  • Current Mode Control, Fast Transient Response
  • External Frequency Synchronization
  • Multiphase Parallelable with Current Sharing
  • Selectable Burst Mode® Operation
  • Overvoltage Input and Overtemperature Protection
  • Power Good Indicator
  • Ultrathin 6.25mm × 6.25mm × 1.82mm LGA and 6.25mm × 6.25mm × 2.42mm BGA Packages
Additional Details
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The LTM4632 is an ultrathin triple output step-down μModule® (power module) regulator to provide complete power solution for DDR-QDR4 SRAM. Operating from a 3.6V to 15V input voltage, the LTM4632 supports two ±3A output rails, both sink and source capable, for VDDQ and VTT, plus a 10mA low noise reference VTTR output. Both VTT and VTTR track and are equal to VDDQ/2. Housed in a 6.25mm × 6.25mm × 1.82mm LGA and 6.25mm × 6.25mm × 2.42mm BGA packages, the LTM4632 includes the switching controller, power FETs, inductors and support components. Alternatively, the power module can also be configured as a two phase single ±6A output VTT. Only a few ceramic input and output capacitors are needed to complete the design.

The LTM4632 supports selectable Burst Mode operation (CH1 only) and output voltage tracking for supply rail sequencing. Its high switching frequency and current mode control enable a very fast transient response to line and load changes without sacrificing stability.

Fault protection features include overvoltage input, overcurrent and overtemperature protection.

The LTM4632 is RoHS compliant with Pb-free finish.

Applications

  • DDR Memory Power Supply
  • General Purpose Point of Load Conversion
  • Telecom, Networking and Industrial Equipment
Part Models 5
1ku List Price Starting From $8.66

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
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Product Lifecycle

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Jul 21, 2021

- 21_0159

Ink Mark to Laser Mark Conversion for µModule

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Nov 4, 2020

- 20_0319

Notification of additional Assembly Location, ASE Korea for LTM4632

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Feb 28, 2020

- 20_0123

Micro-Module, Test Site Transfer from Analog Devices Singapore to Analog Devices Penang, Malaysia

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Nov 20, 2019

- 19_0219

LTM4632 Notification of Qualification of New Mold Compound and Substrate Change

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Filter by Model

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Reset Filters

Part Models

Product Lifecycle

PCN

Jul 21, 2021

- 21_0159

arrow down

Ink Mark to Laser Mark Conversion for µModule

LTM4632EV#PBF

PRODUCTION

LTM4632EY#PBF

PRODUCTION

LTM4632IV#PBF

PRODUCTION

LTM4632IY

PRODUCTION

LTM4632IY#PBF

PRODUCTION

Nov 4, 2020

- 20_0319

arrow down

Notification of additional Assembly Location, ASE Korea for LTM4632

LTM4632EV#PBF

PRODUCTION

LTM4632EY#PBF

PRODUCTION

LTM4632IV#PBF

PRODUCTION

LTM4632IY

PRODUCTION

LTM4632IY#PBF

PRODUCTION

Feb 28, 2020

- 20_0123

arrow down

Micro-Module, Test Site Transfer from Analog Devices Singapore to Analog Devices Penang, Malaysia

LTM4632EV#PBF

PRODUCTION

LTM4632EY#PBF

PRODUCTION

LTM4632IV#PBF

PRODUCTION

LTM4632IY

PRODUCTION

LTM4632IY#PBF

PRODUCTION

Nov 20, 2019

- 19_0219

arrow down

LTM4632 Notification of Qualification of New Mold Compound and Substrate Change

LTM4632EV#PBF

PRODUCTION

LTM4632EY#PBF

PRODUCTION

LTM4632IV#PBF

PRODUCTION

LTM4632IY

PRODUCTION

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PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

reference details image

DC2367A

LTM4632 Demo Board | Ultrathin Triple Output Buck μModule Regulator for DDR-QDR4 Memory, 3.6V ≤ VIN ≤ 15V, ±3A VDDQ/VTT, 10mA VREF

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DC2367A

LTM4632 Demo Board | Ultrathin Triple Output Buck μModule Regulator for DDR-QDR4 Memory, 3.6V ≤ VIN ≤ 15V, ±3A VDDQ/VTT, 10mA VREF

LTM4632 Demo Board | Ultrathin Triple Output Buck μModule Regulator for DDR-QDR4 Memory, 3.6V ≤ VIN ≤ 15V, ±3A VDDQ/VTT, 10mA VREF

Product Detail

Demonstration circuit DC2367A features the LTM4632EV μModule® regulator, a tiny low-profile high-performance high efficiency dual step-down regulator for DDR power. LTM4632 has an operating input voltage range of 3.6V to 15V. The output voltage of channel 1 (VDDQ) is resistor programmable from 0.6V to 2.5V and is capable of delivering up to 3A of output current. The output voltage of channel 2 (VTT) is set to regulate ½ of the voltage on the VDDQIN pin which can provided by either the channel 1 output or an external reference voltage. It can source or sink up to 3A of output current. A 10mA buffered output of VDDQIN/2 is also provided for supplying VREF voltage for DDR memory. DC2367A also provides the option for paralleling channels 1 and 2 together for up to 6A capable VTT rail.

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 1

HTG-AI & Prime PCIe Express Platform - Top View

Versal PRIME /AI PCI Express Platform

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HTG-VSL1

Versal PRIME /AI PCI Express Platform

HTG-VSL1

Circuits from the lab

tooltip Info:Circuits from the lab
Versal PRIME /AI PCI Express Platform

Features and Benefits

  • Xilinx Versal AI Core and Prime series solves a broad range of industry-specific problems with performance and flexibility. Core use cases  include storage acceleration,  data center network acceleration, 5G xHaul and Passive optical networks.

  • The HTG-VSL1 AI Core and Prime PCIe express platform allows easy and versatile functional expansion through two Vita 57.4 compliant High-Pin-Count  FMC+ ports and one high-speed AcceleRate® port.

  • Analog Devices, Inc. supports power delivery solutions for the HTG-VSL1 for the Versal AI Core and Versal Prime PCIe express platform. DC/DC μModule regulators are used on the HTG-VSL1 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.

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

  • For a complete list power designs and use cases, please contact your local FAE.

  • Key Power DC DC Modules include:
    • LTM4700 is a Dual 50A or Single 100A μModule Regulator with Digital Power System Management, PMBus
    • LTM4638 is a 15A Step-Down DC/DC μModule Regulator
    • LTM4625 is a 5A Step-Down DC/DC μModule Regulator
    • LTM4632 is a Triple Output, Step-Down μModule Regulator for DDR-QDR4 Memory
    • LTC2937 is a Programmable Six Channel Sequencer and Voltage Supervisor with EEPROM
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