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LTM4681 Datasheet

LTM4681 Datasheet

Quad 31.25A or Single 125A μModule Regulator with Digital Power System Management
Part No.: LTM4681
Page: 134 Pages
Size: 4249 KB
Manufacturer: Linear Technology
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Views: 1
Update Time: 2024-11-22 11:21:14
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LTM4681 Datasheet Applicable Part

Part No. Packing SPQ Marking MSL Pins Temp Range Package Description Buy
LTM4681EY#PBF Tray 50 LTM4681Y 4 330 -40°C ~125°C 330-Lead BGA (22mm x 15mm x 8.17mm)  
LTM4681IY#PBF Tray 50 LTM4681Y 4 330 -40°C ~125°C 330-Lead BGA (22mm x 15mm x 8.17mm)  
LTM4681IY Tray 50 LTM4681Y 4 330 -40°C ~125°C 330-Lead BGA (22mm x 15mm x 8.17mm)  
SPQ:Standard Pack Quantity;MSL:Moisture Sensitivity Level

LTM4681 Datasheet(PDF)

LTM4681 Datasheet(Picture)

LTM4681 Features

  • Quad Digitally Adjustable Analog Loops with Digital Interface for Control and Monitoring
  • Wide Input Voltage Range: 4.5V to 16V
  • Output Voltage Range: 0.5V to 3.3V
  • ±0.5% Maximum DC Output Error Over Temperature
  • ±4% Current Readback Accuracy: 0°C to 125°C
  • Integrated Input Current Sense Amplifier
  • 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 × 8.17mm 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

LTM4681 Applications

  • Multi-Rail Processor Power, Configurable Core Power

LTM4681 Description

The LTM4681 is a quad 31.25A or single 125A stepdown μModule® (power module) DC/DC regulator featuring remote configurability and telemetry-monitoring of power management parameters over PMBus. The LTM4681 is comprised of digitally programmable analog control loops, precision mixed-signal circuitry, EEPROM, power MOSFETs, inductors and supporting components.

The LTM4681’s 2-wire serial interface allows outputs to be margined, tuned and ramped up and down at programmable slew rates with sequencing delay times. True input current sense, output currents and voltages, output power, temperatures, uptime and peak values are readable. Custom configuration of the EEPROM contents is not required. At start-up, output voltages, switching frequency, and channel phase angle assignments can be set by pinstrapping resistors. The LTpowerPlay® GUI and DC1613 USB-to-PMBus converter and demo kits are available. 

The LTM4681 is offered in a 15mm × 22mm × 8.17mm BGA package available with SnPb or RoHS compliant terminal finish.

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