LTM4682

RECOMMENDED FOR NEW DESIGNS

Low Profile Quad 31.25A or Single 125A μModule Regulator with Digital Power System Management

Data Sheet (Rev. A) Product Selection Table
Part Models
3
1ku List Price
Starting From $135.67
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    Part Details

    • Quad Digitally Adjustable Analog Loops with Digital Interface for Control and Monitoring
    • Wide Input Voltage Range: 4.5V to 16V
    • Output Voltage Range: 0.7V to 1.35V
    • ±0.5% DC Output Accuracy at 0.75V
    • ±4.5% Current Readback Accuracy: 0°C to 125°C
    • Optimized for Low Output Voltage Ranges
    • 400kHz PMBus-Compliant I2C Serial Interface
    • Supports Telemetry Polling Rates Up to 125Hz
    • Integrated 16-Bit ΔΣ ADC
    • Parallel and Current Share Multiple Modules
    • 15mm × 22mm × 5.71mm BGA Package

      Readable Data

      • Input and Output Voltages, Currents, and Temperatures
      • Running Peak Values, Uptime, Faults and Warnings
      • Onboard EEPROM Fault Log Record

      Writable Data and Configurable Parameters

      • Output Voltage, Voltage Sequencing and Margining
      • Digital Soft-Start/Stop Ramp, Program Analog Loop
      • OV/UV/OT, UVLO, Frequency and Phasing
    LTM4682
    Low Profile Quad 31.25A or Single 125A μModule Regulator with Digital Power System Management
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    Documentation

    Data Sheet 1

    User Guide 2

    Learn More

    Software Resources

    Can't find the software or driver you need?

    Request a Driver/Software

    Tools & Simulations

    LTspice

    Models for the following parts are available in LTspice:

    • LTM4682

    LTpowerPlay®

    LTpowerPlay® is a powerful, Windows-based development environment supporting Linear Technology's Digital Power System Management (PSM) products.

    Open Tool
    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.

    Evaluation Kits

    eval board
    schematic 1
    schematic 2
    schematic 3
    EVAL-LTM4682-A2Z

    EVAL-LTM4682-A2Z: LTM4682 | Low VOUT Quad 31.25A or Single 125A μModule Regulator with Digital Power System Management

    Buy Now View Details

    Features and Benefits

    • Quad digitally adjustable analog loops with a digital interface for control and monitoring.
    • Optimized for low output voltage ranges and fast load transient response.
    • 15mm × 22mm × 5.71mm Ball grid array (BGA) package.

    Product Details

    The EVAL-LTM4682-A2Z evaluation board features the LTM4682: the wide input and output voltage range, high efficiency and power density, quad output PolyPhase® DC-to-DC step-down μModule® (micromodule) power regulator with digital power system management (PSM). The EVAL-LTM4682-A2Z evaluation board is configured as a 4-phase single output. A similar evaluation board with a 4-phase four outputs is also available (EVAL-LTM4682-A1Z).

    The EVAL-LTM4682-A2Z evaluation board’s default input voltage range is 4.5V to 16V. However, if VIN is lower than 6V and within 4.5V ≤ VIN ≤ 5.75V, a minor modification to certain existing on-board components is required. See step 8 (Operation at Low VIN: 4.5V ≤ VIN ≤ 5.75V) in the Procedure section.

    The factory default output voltage VOUT = 0.7V at 125A maximum load current. Forced airflow and heatsink might also be used to further optimize the output power when all output rails are on and fully loaded. The evaluation board output voltages can be adjusted from 0.7V up to 1.35V. Refer to the LTM4682 data sheet for thermal derating curves and recommended switching frequency when adjusting the output voltage.

    Please see the User Guide for the full description.

    eval board
    schematic 4
    schematic 5
    schematic 6
    EVAL-LTM4682-A1Z

    EVAL-LTM4682-A1Z: LTM4682 | Low VOUT Quad 31.25A or Single 125A μModule Regulator with Digital Power System Management

    Buy Now View Details

    Features and Benefits

    • Quad digitally adjustable analog loops with a digital interface for control and monitoring.
    • Optimized for low output voltage ranges and fast load transient response.
    • 15mm × 22mm × 5.71mm Ball grid array (BGA) package.

    Product Details

    The EVAL-LTM4682-A1Z evaluation board features the LTM®4682: the wide input and output voltage range, high efficiency and power density, quad output PolyPhase® DC-to-DC step-down μModule® (micromodule) power regulator with digital power system management (PSM). The EVAL-LTM4682-A1Z evaluation board is configured as a 4-phase four output. A similar evaluation board with a 4-phase single output is also available (EVAL-LTM4682-A2Z).

    The EVAL-LTM4682-A1Z evaluation board’s default input voltage range is 4.5V to 16V. However, if VIN is lower than 6V and within 4.5V ≤ VIN ≤ 5.75V, a minor modification to certain existing on-board components is required. See step 8 (Operation at Low VIN: 4.5V ≤ VIN ≤ 5.75V) in the Procedure section.

    The factory default output voltage VOUT [0:3] is 0.7V at 31.25A maximum load current per channel. Each channel can deliver up to 31.25A maximum load current, but forced airflow and heatsink might also be used to further optimize the output power when all output rails are on and fully loaded. The evaluation board output voltages can be adjusted from 0.7V up to 1.35V. Refer to the LTM4682 data sheet for thermal derating curves and recommended switching frequency when adjusting the output voltage.

    Please see the User Guide for the full description.
    EVAL-LTM4682-A2Z
    EVAL-LTM4682-A2Z: LTM4682 | Low VOUT Quad 31.25A or Single 125A μModule Regulator with Digital Power System Management
    EVAL-LTM4682-A1Z
    EVAL-LTM4682-A1Z: LTM4682 | Low VOUT Quad 31.25A or Single 125A μModule Regulator with Digital Power System Management

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