RadioLocman.com Electronics ru
Advanced Search +
  

Datasheet Linear Technology LTM4637

ManufacturerLinear Technology
SeriesLTM4637

20A DC/DC Module (Power Module) Step-Down Regulator

Datasheets

  • Download » Datasheet PDF, 624 Kb, File uploaded: Sep 25, 2017
    LTM4637: 20A DC/DC Module (Power Module) Step-Down Regulator Data Sheet
    Docket ↓
    LTM4637
    20A DC/DC µModule
    Step-Down Regulator
    Features Description Complete 20A Switch Mode Power Supply
    4.5V to 20V Input Voltage Range
    0.6V to 5.5V Output Voltage Range
    ±1.5% Total DC Output Voltage Error
    (–40°C to 125°C)
    n Differential Remote Sense Amplifier for Precision
    Regulation for (VOUT ≤ 3.3V)
    n Current Mode Control/Fast Transient Response
    n Parallel Current Sharing (Up to 80A)
    n Frequency Synchronizatio Selectable Pulse-Skipping or Burst Mode® Operatio Soft-Start/Voltage Tracking
    n Up to 88% Efficiency (12V , 1.8V
    IN
    OUT)
    n Overcurrent Foldback Protectio Output Overvoltage Protectio Internal Temperature Monitor
    n Overtemperature Protectio 15mm × 15mm × 4.32mm LGA and
    15mm × 15mm × 4.92mm BGA Packages
    n SnPb (BGA) or RoHS Compliant (LGA and BGA) Finish The LTM®4637 is a complete 20A output high efficiency
    switch mode step-down DC/DC µModule (micromodule)
    regulator. Included in the package are the switching controller, power FETs, inductor and compensation components.
    Operating over an input voltage range from 4.5V to 20V, ...

Prices

Packaging

Parametrics

LTM4637EV#PBFLTM4637EY#PBFLTM4637IV#PBFLTM4637IYLTM4637IY#PBF
ArchitectureConstant Frequency Current ModeConstant Frequency Current ModeConstant Frequency Current ModeConstant Frequency Current ModeConstant Frequency Current Mode
Demo BoardsDC1872ADC1872ADC1872ADC1872ADC1872A
Design ToolsLTspice File,LTpowerCAD FileLTspice File,LTpowerCAD FileLTspice File,LTpowerCAD FileLTspice File,LTpowerCAD FileLTspice File,LTpowerCAD File
Export Controlnonononono
FeaturesInternal Heat Sink, Differential Remote Sense, External Synchronization, Burst Mode, Tracking, Resistor Set Frequency, Power Good, Temperature MonitorInternal Heat Sink, Differential Remote Sense, External Synchronization, Burst Mode, Tracking, Resistor Set Frequency, Power Good, Temperature MonitorInternal Heat Sink, Differential Remote Sense, External Synchronization, Burst Mode, Tracking, Resistor Set Frequency, Power Good, Temperature MonitorInternal Heat Sink, Differential Remote Sense, External Synchronization, Burst Mode, Tracking, Resistor Set Frequency, Power Good, Temperature MonitorInternal Heat Sink, Differential Remote Sense, External Synchronization, Burst Mode, Tracking, Resistor Set Frequency, Power Good, Temperature Monitor
Frequency, kHz770770770770770
Frequency Adjust Range250kHz - 800kHz250kHz - 800kHz250kHz - 800kHz250kHz - 800kHz250kHz - 800kHz
Frequency Sync Range250kHz - 800kHz250kHz - 800kHz250kHz - 800kHz250kHz - 800kHz250kHz - 800kHz
Integrated Inductoryesyesyesyesyes
Ishutdown, A4040404040
Isupply, mA1717171717
Max Phases11111
Monolithicyesyesyesyesyes
Number of Outputs11111
Operating Temperature Range, °C0 to 850 to 85-40 to 85-40 to 85-40 to 85
Output Current, A2020202020
Polyphasenonononono
Switch Current, A2525252525
Synchronousyesyesyesyesyes
TopologyBuckBuckBuckBuckBuck
Topology 1BuckBuckBuckBuckBuck
Vin Max, V2020202020
Vin Min, V4.54.54.54.54.5
Vout Max, V5.55.55.55.55.5
Vout Maximum5.5V5.5V5.5V5.5V5.5V
Vout Min, V0.60.60.60.60.6

Eco Plan

LTM4637EV#PBFLTM4637EY#PBFLTM4637IV#PBFLTM4637IYLTM4637IY#PBF
RoHSCompliantCompliantCompliantNot CompliantCompliant

Design Notes

  • Download » Design Notes - DN549 PDF, 1.6 Mb, File published: Feb 19, 2016
    Powering Altera Arria 10 FPGA and Arria 10 SoC: Tested and Verified Power Management Solutions
    Docket ↓
    Powering Altera Arria 10 FPGA and Arria 10 SoC: Tested
    and Verified Power Management Solutions
    Design Note 549
    Afshin Odabaee
    Introduction
    FPGA development kits allow system developers to
    evaluate an FPGA without having to design a complete
    system. Figures 1 and 2 show Altera’s new 20nm
    Arria 10 FPGAs and Arria 10 SoCs (System-on-Chip)
    development boards. These boards are tested and
    verified by Altera, exemplifying best design practices
    in layout, signal integrity and power management.
    Power Management for Core, System and I/O
    The power management solution for high end FPGAs,
    including the Arria 10, should be carefully selected.
    A well thought-out power management design can
    reduce PCB size, weight and complexity, as well as
    lower power consumption and cooling costs. And it
    is essential to achieve optimal system performance.
    For example, the 0.95V at 105A supplied by the 12V
    DC/DC regulator powering the core of the Arria 10 GX
    FPGA in Figure 1 has several features that complement
    the power saving schemes of the SoC: Figure 1. Arria 10 GX FPGA Development Kit ...

Articles

  • Download » Articles - LT Journal PDF, 3.2 Mb, File published: Aug 25, 2016
    Avoid Debugging Cycles in Power Management for FPGA, GPU and ASIC Systems
    Docket ↓
    Avoid Debugging Cycles in Power Management for FPGA,
    GPU and ASIC Systems
    Afshin Odabaee When it comes to designing FPGA, GPU or ASIC controlled systems, the number of
    design challenges related to power management and analog systems pale in comparison
    to those related to digital design. Nevertheless, it is risky to assume that power system
    design can be left to “later,” or taken in line with digital design. Even seemingly innocuous
    problems in power supply design can significantly delay the release of a system, as any
    added time to the power system debugging cycle can halt all work on the digital side.
    A good way to put DC/DC regulation
    issues to rest is to use a verified development kit offered by the FPGA, GPU or
    ASIC vendor. Often, the design itself or
    a similar design is available as a board/
    kit by the suppliers of power products
    and FPGA, GPU and ASIC manufacturers. Using a tested and verified kit unburdens
    system designers of most power system
    and analog issues, allowing them instead
    to focus their energies on configuring the
    complex digital systems. The optimum
    power system layout is taken care of
    before significant design is undertaken. THOUGHTFUL POWER MANAGEMENT
    IS CHALLENGING AT THE START Every design task is initially daunting,
    and power management design is no
    exception. This is the case when power is ...
  • Download » Articles - LT Journal PDF, 181 Kb, File published: Jan 6, 2014
    Complete 20V, 20A High Performance Module DC/DC Regulator in 15mm × 15mm × 4.32mm Package
    Docket ↓
    Complete 20V, 20A High Performance µModule DC/DC
    Regulator in 15mm × 15mm × 4.32mm Package
    Sam Young The LTM4637 is a complete 20A high efficiency switch mode power supply
    in a compact 15mm × 15mm × 4.32mm LGA package. The controller, power
    MOSFETs, inductor and compensation circuitry are all integrated within its low
    profile package, allowing use on the bottom side of the PCB. The LTM4637 has
    an input voltage range of 4.5V to 20V and supports an output voltage range of
    0.6V to 1.8V. It has an operating frequency range of 440kHz–770kHz where it
    can provide up to 20A with just a few additional external components.
    VERSATILITY The LTM4637 features a programmable
    soft-start to limit inrush currents as well
    as output voltage tracking for sequencing requirements. Also included are an
    output voltage power good indicator, an
    external VCC pin allowing for bypassing
    of the internal LDO for an extra efficiency benefit, selectable pulse-skipping
    mode and Burst Mode operation for
    increased light load efficiency, as well
    as internal temperature monitoring.
    EASY COMPENSATION;
    EASY PARALLEL OPERATION The LTM4637’s constant-frequency current
    mode control and internal feedback loop
    compensation provide excellent stability and transient performance for a wide
    range of output capacitors. The LTM4637 ...

Moldel Line

Series: LTM4637 (5)

Manufacturer's Classification

  • Module Solutions > Module Regulators > Module Buck Regulators

Slices ↓
Radiolocman facebook Radiolocman twitter Radiolocman google plus