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Data Sheet
BQ79758-Q1
Functional Safety-Compliant Automotive 18S Battery
Monitor With
Current Sense
1 Features
- AEC-Q100 qualified with the following results:
- Device temperature grade 1: –40°C to +125°C
ambient operating temperature range
- Functional
Safety-Compliant
- Measure 9 to 18 batteries in series per device,
stackable up to 64 devices
- Dedicated ADC with typical ±1mV accuracy
- Two independent Current Sense ADCs with ±0.1% gain error drift
and input range +/-275mV.
- Programmable Over
Current Detection comparators
- Support limp home mode with full redundancy
- Integrated post-ADC configurable digital low-pass filters
- Supports busbar without affecting measurement accuracy
- 10 GPIOs for temp
sensor/analog/digital/I2C controller/SPI
controller
- Internal cell balancing
- Balancing at 300mA
- User controlled PWM adjustment cell balancing
current
- Built-in balancing thermal management with automatic pause and resume control
- Robust daisy chain communication and support Ring
Architecture
- Hardware reset by host simulates POR-like event without battery removal
- On chip memory for one time custom programming
- Low power mode current <6μA
- Compatible with BQ79600-Q1 with SPI/UART interface
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