LTC3880 Datasheet | Linear Technology

LTC3880/LTC3880-1 Dual Output Poly Phase Step-Down DC/DC Controller with Digital Power System Management Features nn PMBus/I2C pliant 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 (250k Hz 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 Poly Phase® 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 Tele, Data and Storage Systems nn Intelligent Energy Efficient Power Regulation DESCRIPTION The LTC®3880/LTC3880-1 are dual, Poly Phase DC/DC synchronous step-down switching regulator controllers with an I2C-based PMBus pliant serial interface. The controllers use a constant frequency, current mode architecture that is supported by LTpower Play™ 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, current, internal/external temperature and fault status can be read back through the bus interface. The LTC3880 incorporates a 5V linear regulator while the LTC3880-1 uses an external 5V supply for minimum power loss. See parison to LTC3887 below. LTC3887/LTC3887-1 LTC3880/LTC3880-1 VOUT Start-Up Time 35ms 120ms Max VOUT0/1 5.5V/5.5V 4V/5.4V Fast ADC Mode for 1 Parameter Yes No All registered trademarks and trademarks are the property of their respective owners. Protected by U.S....