BQ25756E Series

Stand-alone or I²C-controlled bidirectional buck-boost charge controller for up to 7S batteries

Catalog

Stand-alone or I²C-controlled bidirectional buck-boost charge controller for up to 7S batteries

Part	Charge Current - Max	Voltage - Supply (Max)	Battery Chemistry	Operating Temperature (Min)	Operating Temperature (Max)	Mounting Type	Package Name	Package Width	Package Length	Current - Charging	Programmable Features	Package / Case	Number of Cells (Max)	Number of Cells (Min)	Interface	Fault Protection	Battery Pack Voltage (Max)
Texas Instruments BQ25756ERRVR	20 A	36 V	Multi-Chemistry	-40 °C	85 °C	Surface Mount	36-VQFN	6 mm	5 mm	Constant Programmable	Current Timer Voltage	36-VFQFN Exposed Pad	7	1	I2C	Over Current Over Temperature Over-Under Voltage Short Circuit	36 V

Catalog

Stand-alone or I²C-controlled bidirectional buck-boost charge controller for up to 7S batteries

Description

The BQ25756E is a wide input voltage, switched-mode buck-boost Li-Ion, Li-polymer, or LiFePO 4 battery charge controller with bidirectional power flow support. 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-boost converter, thereby providing a high density solution with ease of use. In reverse mode, the device draws power from the battery and regulates the input terminal voltage with an added constant current limit for protection, supporting USB-PD EPR power profile. Besides the I 2C host-controlled charging mode, the device also supports standalone charging mode via resistor programmable limits. Input current, charge current and charge voltage regulation targets can be set via the ILIM_HIZ, ICHG and FB pins, respectively. The BQ25756E is a wide input voltage, switched-mode buck-boost Li-Ion, Li-polymer, or LiFePO 4 battery charge controller with bidirectional power flow support. 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-boost converter, thereby providing a high density solution with ease of use. In reverse mode, the device draws power from the battery and regulates the input terminal voltage with an added constant current limit for protection, supporting USB-PD EPR power profile. Besides the I 2C host-controlled charging mode, the device also supports standalone charging mode via resistor programmable limits. Input current, charge current and charge voltage regulation targets can be set via the ILIM_HIZ, ICHG and FB pins, respectively.