Texas Instruments bq769x0 锂离子 & 磷酸铁锂电池监控器
Texas Instruments bq769x0 Li-Ion & Li-Phosphate Battery Monitors are a robust analog front-end (AFE) devices that 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 bq769x0 is designed with low power in mind: Sub-blocks within the IC may be enabled/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.
特性
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AFE monitoring features
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Pure digital interface
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Internal ADC measures cell voltage, die temperature, and external thermistor
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A separate, internal ADC measures pack current (coulomb counter)
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Directly supports up to three thermistors (103AT)
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Hardware protection features
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Overcurrent in Discharge (OCD)
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Short Circuit in Discharge (SCD)
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Overvoltage (OV)
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Undervoltage (UV)
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Secondary protector fault detection
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Additional features
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Integrated cell balancing FETs
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Charge, discharge low-side NCH FET drivers
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Alert interrupt to host microcontroller
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2.5V or 3.3V output voltage regulator
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No EEPROM programming necessary
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High supply voltage absolute maximum (up to 108V)
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Simple I2C compatible interface (CRC option)
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Random cell connection tolerant
应用
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Light Electric Vehicles (LEV): eBikes, eScooters, Pedelec, and pedal-assist bicycles
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Power and gardening tools
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Wireless base station backup systems
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Battery backup and UPS systems
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12V, 18V, 24V, 36V, and 48V battery packs
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