LTM4677 Datasheet | Linear Technology

Dual 18A or Single 36A µModule Regulator with Digital Power System Management Features Description nn Dual, Fast, Analog Loops with Digital Interface for
Control and Monitoring nn Wide Input Voltage Range: 4.5V to 16V nn Output Voltage Range: 0.5V to 1.8V nn ±0.5% Maximum DC Output Error Over Temperature nn ±2.5% Current Readback Accuracy nn Pin patible with LTM4676A (Dual 13A, Single 26A) nn 400k Hz PMBus-pliant I2C Serial Interface nn Supports Telemetry Polling Rates up to 125Hz nn Integrated 16-Bit ∆Σ ADC nn Constant Frequency Current Mode Control nn Parallel and Current Share Multiple Modules nn 16mm × 16mm × 5.01mm BGA Package Readable Data: nn Input and Output Voltages, Currents, and Temperatures nn Running Peak Values, Uptime, Faults and Warnings nn Onboard EEPROM Fault Log Record with ECC Writable Data and Configurable Parameters: nn Output Voltage, Voltage Sequencing and Margining nn Digital Soft-Start/Stop Ramp nn OV/UV/OT, UVLO, Frequency and Phasing Applications nn System Optimization, Characterization and Data Mining in Prototype, Production and Field Environments nn Tele, Data, and Storage Systems The LTM®4677 is a dual 18A or single 36A step-down µModule® (power module) DC/DC regulator with 40ms turn-on time. It Features remote configurability and telemetry-monitoring of power management parameters over PMBus- an open standard I2C-based digital interface protocol. The LTM4677 is prised of fast analog control loops, precision mixed-signal circuitry, EEPROM, power MOSFETs, inductors and supporting ponents. The LTM4677’s 2-wire serial interface allows outputs to be margined, tuned and ramped up and down at programmable slew rates with sequencing delay times. Input and 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...