Analog Devices LT8491 Buck-Boost Battery Charge Controller

Analog Devices LT8491 Buck-Boost Battery Charge Controller


Analog Devices Inc. LT8491 Buck-Boost Battery Charge Controller implements a constant-current constant voltage (CCCV) charging profile used for most battery types. This includes sealed lead-acid (SLA), flooded, gel, and lithium-ion. The device operates from input voltages above, below, or equal to the output voltage and is powered by a solar panel or DC power supply.

Typical Application


  • VIN Range: 6V to 80V
  • VBAT Range: 1.3V to 80V
  • Single Inductor Allows VIN Above, Below, or Equal to VBAT
  • Automatic MPPT for Solar Powered Charging
  • Automatic Temperature Compensation
  • I2C Telemetry and Configuration
  • Internal EEPROM for Configuration Storage
  • Operation from Solar Panel or DC Supply
  • Four Integrated Feedback Loops
  • Synchronizable Fixed Frequency: 100kHz to 400kHz
  • 64-Lead (7mm x 11mm x 0.75mm) QFN Package

more information:

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Mike is the founder and editor of, an electronics engineering community/news and project sharing platform. He studied Electronics and Physics and enjoys everything that has moving electrons and fun. His interests lying on solar cells, microcontrollers and switchmode power supplies. Feel free to reach him for feedback, random tips or just to say hello :-)

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