• BQ7694003DBTRBQ7694003DBTR


BQ7694003DBTR belongs to 15-series cell li-ion and li-phosphate battery monitor of Texas Instruments(TI). The BQ7694003DBTR family of robust analog front-end (AFE) devices serves as part of a complete pack monitoring and protection solution for next-generation, high-power systems, such as light electric vehicles, power tools, and uninterruptible power supplies. The BQ7694003DBTR is designed with low power in mind: Sub-blocks within the IC may be enabled or disabled to control the overall chip current consumption, and a SHIP mode provides a simple way to put the pack into an ultra-low power state.

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Product Description

The BQ7694003DBTR works for up to 15-series cells or typical 48-V packs. A variety of battery chemistries may be managed with these AFEs, including Li-ion, Li-iron phosphate, and more. 

Through I2C, a host controller can use the BQ769x0 to implement many battery pack management functions, such as monitoring (cell voltages, pack current, pack temperatures), protection (controlling charge/discharge FETs), and balancing. 

Integrated A/D converters enable a purely digital readout of critical system parameters, with calibration handled in TI’s manufacturing process.

1.Product Parameter (Specification)

AFE monitoring features
Pure digital interface
Internal ADC measures cell voltage, die temperature, and external thermistor
A separate, internal ADC measures pack current (coulomb counter)
Directly supports up to three thermistors (103AT)

Hardware protection features
Overcurrent in Discharge (OCD)
Short Circuit in Discharge (SCD)
Overvoltage (OV)
Undervoltage (UV)
Secondary protector fault detection

Additional features
Integrated cell balancing FETs
Charge, discharge low-side NCH FET drivers
Alert interrupt to host microcontroller
2.5-V or 3.3-V output voltage regulator
No EEPROM programming necessary
High supply voltage absolute maximum (up to 108 V)
Simple I2C compatible interface (CRC option)
Random cell connection tolerant

2.Product Feature And Application

li-phosphate battery monitor

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