LT8491 Battery Charge Controller

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            LT8491 Battery Charge Controller
                    Analog Devices' LT8491 high voltage buck-boost battery charge controller with MPPT and I2C
    

ADIs' LT8491 is a buck-boost switching regulator battery charger that implements a constant-current constant-voltage (CCCV) charging profile used for most battery types, including sealed lead-acid (SLA), flooded, gel, and lithium-ion.

The device operates from input voltages above, below, or equal to the output voltage, and can be powered by a solar panel or a DC power supply. On-chip logic provides automatic maximum power point tracking (MPPT) for solar-powered applications. The LT8491 can perform automatic temperature compensation by sensing an external thermistor thermally coupled to the battery. The STATUS pin can be used to drive an LED indicator lamp. The device is available in a low profile (0.75 mm) 7 mm × 11 mm 64-lead QFN package.

Features

V_IN range: 6 V to 80 V
V_BAT range: 1.3 V to 80 V
Single inductor allows V_IN above, below, or equal to V_BAT
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: 100 kHz to 400 kHz
64-lead (7 mm × 11 mm × 0.75 mm) QFN package

Applications

Solar-powered battery chargers
Multiple types of lead-acid battery charging

Li-ion battery chargers
Battery equipped industrial or portable military equipment