BQ25820 Series

Stand-alone or I²C controlled 70V bidirectional buck charge controller with power path

Catalog

Stand-alone or I²C controlled 70V bidirectional buck charge controller with power path

Part	Battery Chemistry	Fault Protection	Battery Pack Voltage (Max)	Operating Temperature (Max)	Operating Temperature (Min)	Interface	Current - Charging	Charge Current - Max	Number of Cells (Max)	Number of Cells (Min)	Mounting Type	Package Name	Package Width	Package Length	Programmable Features	Voltage - Supply (Max)	Package / Case
Texas Instruments BQ25820RRVR	Multi-Chemistry	Over Current Over Temperature Over-Under Voltage	70 V	125 °C	-40 °C	I2C	Constant Programmable	20 A	14	1	Surface Mount	36-VQFN	6 mm	5 mm	Current Timer Voltage	70 V	36-VFQFN Exposed Pad

Catalog

Stand-alone or I²C controlled 70V bidirectional buck charge controller with power path

Description

The BQ25820 is a wide input voltage, switched-mode buck Li-Ion, Li-polymer, or LiFePO4 battery charge controller with direct power path control. The device offers high-efficiency battery charging over a wide voltage range with accurate charge current and charge voltage regulation, in addition to automatic charge preconditioning, termination, and charge status indication. The device integrates all the loop compensation for the buck converter, thereby providing a high density solution with ease of use. In reverse mode, the device draws power from the battery and regulates the SYS terminal voltage. The BQ25820 is a wide input voltage, switched-mode buck Li-Ion, Li-polymer, or LiFePO4 battery charge controller with direct power path control. The device offers high-efficiency battery charging over a wide voltage range with accurate charge current and charge voltage regulation, in addition to automatic charge preconditioning, termination, and charge status indication. The device integrates all the loop compensation for the buck converter, thereby providing a high density solution with ease of use. In reverse mode, the device draws power from the battery and regulates the SYS terminal voltage.