LT8491EUKJ 80V High Voltage Buck Boost Battery Charger with 10A Maximum Current and MPPT Solar Charging

The LT8491EUKJ is an industrial-grade, 80V, four-switch synchronous buck-boost charging control IC designed for high-voltage lithium-ion battery pack charging and power supply scenarios in humanoid robots. Its single-inductor architecture seamlessly adapts to fluctuating input voltages that are higher than, lower than, or equal to the battery voltage, perfectly meeting dual power supply requirements for robot fast-charging adapters and portable photovoltaic recharging systems.

• Wide input range of 6-80V and charging output of 1.3-80V
• Supports multi-cell lithium-ion and lithium iron phosphate power batteries
• Built-in standard CCCV (Constant Current Constant Voltage) charging curve
• Maximum charging current up to 10A for rapid recharging needs
• Automatic Maximum Power Point Tracking (MPPT) for solar energy capture
• Automatic temperature compensation via battery thermistors
• I²C digital bus and on-chip EEPROM for digital management
• Comprehensive fault protection with over-voltage, over-current, over-temperature and open-circuit protection
• 7×11 mm ultra-thin 64-pin QFN package with 0.75 mm thickness
• Operating temperature range: -40°C to 125°C
• Switching frequency of 100-400 kHz

The LT8491EUKJ supports both fixed-base fast charging and autonomous mobile photovoltaic self-charging solutions, simplifying robot power board design and reducing peripheral components. Charging parameters can be stored in on-chip EEPROM, eliminating repeated firmware debugging during mass production. Suitable for high-voltage power supply solutions in commercial service humanoid robots, industrial inspection humanoid robots, and educational humanoid robots.

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Shenzhen Mingjiada Electronics Co., Ltd. is an authorized independent distributor of electronic components from world-renowned brands. Founded in Shenzhen in 1996, Mingjiada has established branches in Hong Kong, Japan, Russia, and Taiwan. The company holds ISO9001:2014 quality management and ISO14001:2014 environmental management certifications. With an experienced team in sales, R&D and management, we specialize in distributing products from more than 500 well-known manufacturers, adhering to the principle of maximizing benefits for customers.