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BQ78350-R1A

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CEDV 锂离子电池电量监测计和电池管理控制器

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The Texas Instruments BQ78350-R1A li-ion and LiFePO₄ Battery Management Controller and companion to the BQ769x0 family of analog front end (AFE) protection devices provides a comprehensive set of Battery Management System (BMS) subsystems, helping to accelerate product development for faster time-to-market.

The BQ78350-R1A controller and the BQ769x0 AFE support 3-series to 15-series cell applications. The BQ78350-R1A device provides an accurate fuel gauge and state-of-health (SoH) monitor, as well as cell balancing and a full range of voltage-, current-, and temperature-based protection features.

The BQ78350-R1A device offers optional LED or LCD display configurations for capacity reporting. It also makes data available over its SMBus 1.1 interface. Battery history and diagnostic data is also kept within the device in non-volatile memory and is available over the same interface.

Compensated end-of-discharge voltage (CEDV) gauging algorithm
Supports SMBus host communication
Flexible configuration for 3- to 5-series (BQ76920), 6- to 10-series (BQ76930), and 9- to 15-series (BQ76940) li-ion and LiFePO₄ batteries
Supports battery configurations up to 320 Ahr
Supports charge and discharge current reporting up to 320 A
On-chip temperature sensor option
External NTC thermistor support from companion AFE
Full array of programmable protection features
- Voltage, current, and temperature
- System components
Lifetime data logging
Supports CC-CV charging, including precharge, charge inhibit, and charge suspend
Offers an optional resistor programmable SMBus slave address for up to eight different bus addresses
Drives up to a 5-segment LED or LCD display for state-of-charge indication
Provides SHA-1 authentication

Cell chemistry	Li-Ion/Li-Polymer, LiFePO4
Number of series cells	>4 Cells
Communication interface	I2C, SMBus
Battery capacity (min) (mAh)	100
Battery capacity (max) (mAh)	320000
Implementation	Pack
External capacity indication	LCD, LED, SOC
Features	CEDV algorithm
Operating temperature range (°C)	-40 to 85
Cell balancing	External, Internal
Rating	Catalog

TSSOP (DBT)

49.92 mm² 7.8 x 6.4

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BQ78350-R1A

CEDV 锂离子电池电量监测计和电池管理控制器

4000-306-326