LTC3880-1 Datasheet

• PMBus/I²C Compliant Serial Interface
• Telemetry Read Back includes V_IN, I_IN, V_OUT, I_OUT, Temperature and Faults
• Programmable Voltage, Current Limit, Digital Soft-Start/Stop, Sequencing, Margining, OV/UV and Frequency Synchronization (250kHz to 1MHz)
• ±0.5% Output Voltage Accuracy Over Temperature
• Integrated 16-Bit ADC
• Internal EEPROM with ECC and Fault Logging
• Integrated Powerful N-Channel MOSFET Gate Drivers

Power Conversion

• • Wide V_IN Range: 4.5V to 24V
  • V_OUT Range: 0.5V to 5.4V (4V on V_OUT0)
  • Analog Current Mode Control Loop
  • Accurate PolyPhase^® Current Sharing for Up to 6 Phases
  • Available in a 40-Pin (6mm × 6mm) QFN Package
  • AEC-Q100 Qualified for Automotive Applications

• High Current Distributed Power Systems
• Telecom, Datacom and Storage Systems
• Intelligent Energy Efficient Power Regulation

The 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, current, internal/external temperature and fault status can be read back through the bus interface. The LTC3880-1 uses an external 5V supply for minimum power loss.