BQ76PL536A Lithium-Ion Battery Monitor and Secondary Protection IC for Electric and Hybrid |


Lithium-Ion Battery Monitor and Secondary Protection IC for Electric and Hybrid



The bq76PL536A device is a stackable battery monitor and protector for three-to-six lithium-ion cells in series. The bq76PL536A integrates an analog front end (AFE) along with a precision analog-to-digital converter (ADC), used to precisely measure battery cell voltages. A separate ADC is used to measure temperature.

In addition to temperature measurement, overvoltage and undervoltage are monitored per channel for protection. Non-volatile memory stores the user-programmable protection thresholds and delay times. A FAULT output signals whenever one of these thresholds is exceeded.

Cell stacks of 192 cells can be supported by stacked bq76PL536A devices. A high-speed SPI interface connects all devices.


  • 3-to-6 Series Cell Support, All Chemistries
  • Hot-Pluggable
  • High-Speed Serial Peripheral Interface (SPI) for Data Communications
  • Stackable Vertical Interface
  • Isolation Components not Required Between Devices
  • Industrial Temperature Range –40°C to 85°C
  • High-Accuracy Analog-to-Digital Converter (ADC):
    • ±1 mV Typical Accuracy
    • 14-Bit Resolution, 6-µs Conversion Time
    • Nine ADC Inputs: 6 Cell Voltages, 1 Six-Cell Brick Voltage, 2 Temperatures, 1 General-Purpose Input
    • Dedicated Pins for Synchronizing Measurements
  • Configuration Data Stored in Error Check/Correct (ECC)-One-Time-Programmable (OTP) Registers
  • Built-In Comparators (Secondary Protector) for:
    • Overvoltage and Undervoltage Protection
    • Overtemperature Protection
    • Programmable Thresholds and Delay Times
    • Dedicated Fault Output Signals
  • Cell Balancing Control Outputs With Safety Timeout
    • Balance Current Set by External Components
  • Supply Voltage Range from 6 V to 30 V Continuous and 36-V Peak
  • Low Power:
    • Typical 12-µA Sleep, 45-µA Idle
  • Integrated Precision 5-V, 3-mA LDO

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Parametrics Compare all products in Battery monitors & balancers

Vin (Max) (V)
Operating Temperature Range (C)
BQ76PL536A BQ76PL455A BQ76PL455A-Q1 BQ76PL536A-Q1
Monitoring (Analog Front-End)     Monitoring (Analog Front-End)     Monitoring (Analog Front-End)     Monitoring (Analog Front-End)    
27     79.2     79.2     27    
Catalog     Catalog     Automotive     Automotive    
-40 to 85     -40 to 85     -40 to 105     -40 to 105    
64HTQFP     80TQFP     80TQFP     64HTQFP