LTC3880-1

LTC3880/LTC3880-1 Dual Output PolyPhase Step-Down DC/DC Controller with Digital Power System Management FEATURES nn PMBus/I2C Compliant Serial Interface nn Telemetry Read Back includes VIN, IIN, VOUT, IOUT, Temperature and Faults nn Programmable Voltage, Current Limit, Digital Soft-Start/Stop, Sequencing, Margining, OV/UV and Frequency Synchronization (250kHz to 1MHz) nn ±0.5% Output Voltage Accuracy Over Temperature nn Integrated 16-Bit ADC nn Internal EEPROM with ECC and Fault Logging nn Integrated Powerful N-Channel MOSFET Gate Drivers Power Conversion nn Wide VIN Range: 4.5V to 24V nn VOUT Range: 0.5V to 5.4V (4V on VOUT0) nn Analog Current Mode Control Loop nn Accurate PolyPhase® Current Sharing for Up to 6 Phases nn Available in a 40-Pin (6mm × 6mm) QFN Package nn AEC-Q100 Qualified for Automotive Applications APPLICATIONS nn High Current Distributed Power Systems nn Telecom, Datacom and Storage Systems nn Intelligent Energy Efficient Power Regulation DESCRIPTION The LTC®3880/LTC3880-1 are dual, PolyPhase DC/DC synchronous step-down switching regulator controllers with an I2C-based PMBus compliant serial interface. The controllers use a constant frequency, current mode architecture that is supported by LTpowerPlay™ software development tool with graphical user interface (GUI). Switching frequency, output voltage, and device address can be programmed using external configuration resistors. Parameters can be set via the digital interface or stored in EEPROM. Voltage, c...