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  4. Step-Up (Boost) Regulators
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  6. LTC7880

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Overview

Features and Benefits

  • PMBus/I2C Compliant Serial Interface
    • Telemetry Read-Back Includes Input and Output Voltage and Current, Temperature and Faults
    • Programmable Voltage, Current Limit, Digital Soft-Start/Stop, Sequencing, Margining, OV/UV/OC, Frequency, and Control Loop Compensation
  • Output Error Less Than ±0.5% Over Temperature
  • Integrated 16-Bit ADC and 12-Bit DAC
  • Internal EEPROM with ECC and Fault Logging
  • Integrated N-Channel MOSFET Gate Drivers
Power Conversion
  • Wide Input Voltage Range: 5V to 40V
  • Operates Down to 2.5V After Start-Up
  • VOUT0, VOUT1 Range: Up to 60V
  • Analog Current Mode Control
  • Accurate PolyPhase® Current Sharing for Up to 6 Phases (50kHz to 500kHz)
  • Available in a 52-Lead (7mm × 8mm) QFN Package

Product Details

The LTC7880 is a dual PolyPhase® DC/DC synchronous step-up switching regulator controller with I2C-based PMBus compliant serial interface. This controller employs a constant-frequency, current-mode architecture, with high voltage input and output capability along with programmable loop compensation. The LTC7880 is supported by the LTpowerPlay™ software development tool with graphical user interface (GUI).

Switching frequency, output voltage, and device address can be programmed both by digital interface as well as external configuration resistors. Parameters can be set via the digital interface or stored in EEPROM. The gate drive for the LTC7880 can be programmed from 6.3V to 9V to maximize efficiency. Both outputs have an independent power good indicator and FAULT function.

The LTC7880 can be configured for discontinuous (pulse-skipping) mode or continuous inductor current mode.

Applications

  • Automotive Always-On and Start-Stop Systems
  • Industrial and Point of Load Applications
All registered trademarks and trademarks are the property of their respective owners. Protected by U.S. patents, including 5481178, 5705919, 5929620, 6100678, 6144194, 6177787, 5408150, 6580258, 6304066, 7420359, 8786268 Patent Pending. Licensed under U.S. Patent 7000125 and other related patents worldwide.

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Evaluation Kits (1)

Tools & Simulations

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LTC7880

Documentation & Resources

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  • Data Sheets (1)
  • Application Notes (1)
  • User Guides (1)
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    Design Resources

    ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.

    Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
    LTC7880EUKG#PBF Material Declaration Reliability Data 52-Lead QFN (7mm x 8mm x 0.75mm w/ EP)
    LTC7880EUKG#TRPBF Material Declaration Reliability Data 52-Lead QFN (7mm x 8mm x 0.75mm w/ EP)
    LTC7880IUKG#PBF Material Declaration Reliability Data 52-Lead QFN (7mm x 8mm x 0.75mm w/ EP)
    LTC7880IUKG#TRPBF Material Declaration Reliability Data 52-Lead QFN (7mm x 8mm x 0.75mm w/ EP)
    Wafer Fabrication Data

    Support & Discussions

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    Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.

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