ADI LTM4681EY#PBF

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.

• 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: -40℃ to +125℃
• 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 86A Package

• Multi-Rail Processor Power
• Configurable Core Power