Analog Devices Inc. LTC7880 Step-Up Controllers

Analog Devices Inc. LTC7880 Step-Up Controllers are dual PolyPhase®, DC/DC synchronous, switching regulator controllers with an I2C-based PMBus compliant serial interface. The LTC7880 utilizes 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 a graphical user interface (GUI). The device can program switching frequency, output voltage, and device address by both digital interfaces as well as external configuration resistors. Parameters can be set via the digital interface or stored in EEPROM. The LTC7880 gate drive can be programmed from 6.3V to 9V to maximize efficiency. Both outputs have an independent power good indicator and FAULT function.


  • 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 of 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 of 5Vto 40V
    • Operates down to 2.5V after start-up
    • Up to 60V VOUT0, VOUT1 range
    • 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


  • Automotive always-on and start-stop systems
  • Industrial and point of load applications

Typical Application

Application Circuit Diagram - Analog Devices Inc. LTC7880 Step-Up Controllers
Publicado: 2019-12-02 | Actualizado: 2022-03-11