BQ76907-Q1中文资料德州仪器数据手册PDF规格书

1 Features

• AEC-Q100 Qualified for automotive applications

• Battery and supercap monitoring capability for 2-

series to 7-series cells

• Integrated low-side drivers for NFET protection

with optional autonomous recovery

• Extensive protection suite including voltage,

temperature, current, and internal diagnostics

• 16-bit delta-sigma voltage ADC

– High accuracy cell voltage measurement of

1mV (typical)

• Dedicated 16- or 24-bit delta-sigma coulomb

counter ADC

• – High-accuracy current measurement with low

input offset error

– Wide-range current applications (±200mV

measurement range across sense resistor)

– 48bit accumulated charge integrator with timer

• Host-controlled cell balancing

• Multiple power modes (typical battery pack

operating range conditions)

– NORMAL mode (with Coulomb counting): 32μA

to 175μA

– SLEEP mode (with protections active): 6μA

– DEEPSLEEP mode: 2.7μA

– SHUTDOWN mode: <1μA

• Supply voltage from 3V to 38.5V

• High-voltage tolerance of 45V on cell connect and

select additional pins

• Support for temperature sensing using an internal

sensor and an external thermistor

• Integrated one-time-programmable (OTP) memory

for device settings, programmed by TI

• 400kHz I2C serial communications with optional

CRC support

• Programmable LDO for external system usage

• 20-pin QFN (RGR) package

2 Applications

• Door handle supercap module

• Automotive 12V auxiliary battery

• Automotive backup battery

3 Description

The Texas Instruments BQ76907-Q1 provides a

highly integrated, high-accuracy battery monitor

and protector for 2-series to 7-series Li-ion, Lipolymer,

LiFePO4 (LFP), and LTO battery packs

and supercaps. The device includes a high-accuracy

monitoring system with a dedicated coulomb counter

and accumulated charge integration, a highly

configurable protection subsystem, and support for

host-controlled cell balancing. Integration includes

low-side protection NFET drivers, a programmable

LDO for external system use, and an I2C host

communication interface supporting up to 400kHz

operation with optional CRC. Continuous Coulomb

counting is available in multiple power modes ranging

down to 32μA. The BQ76907-Q1 operates over a

supply voltage from 3V to 38.5V and is available in

a 20-pin QFN package.