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

BQ76PL536A (ACTIVE)

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

 

Description

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.

Features

  • 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

View more

Parametrics Compare all products in Battery Monitor, Protection & Authentication Solutions

 
Function
Number of Series Cells (Min)
Number of Series Cells (Max)
Communication Interface
Features
Typical Operating Current (Typ) (uA)
Rating
Vin (Max) (V)
Pin/Package
BQ76PL536A BQ76PL455A BQ76PL455A-Q1 BQ76PL536A-Q1
Monitoring (Analog Front-End)    Monitoring (Analog Front-End)    Monitoring (Analog Front-End)    Monitoring (Analog Front-End)   
3    6    6    3   
6    16    16    6   
SPI    Differential Daisy Chain    Differential Daisy Chain    SPI   
Cell Balancing
Integrated ADC
Programmable EEPROM or EPROM
Requires separate MCU
Stackable (built-in interface)
Over-temperature (OT)
Over-voltage (OV)
Under-voltage (UV)   
Cell Balancing
Integrated ADC
Programmable EEPROM or EPROM
Requires separate MCU
Stackable (built-in interface)
Over-temperature (OT)
Over-voltage (OV)
Under-voltage (UV)   
Cell Balancing
Integrated ADC
Programmable EEPROM or EPROM
Requires separate MCU
Stackable (built-in interface)
Over-temperature (OT)
Over-voltage (OV)
Under-voltage (UV)   
Cell Balancing
Integrated ADC
Programmable EEPROM or EPROM
Requires separate MCU
Stackable (built-in interface)
Over-temperature (OT)
Over-voltage (OV)
Under-voltage (UV)   
45    5000    5000    45   
Catalog    Catalog    Automotive    Automotive   
27    79.2    79.2    27   
64HTQFP    80TQFP    80TQFP    64HTQFP   

Other qualified versions of BQ76PL536A

Version Part Number Definition
Automotive BQ76PL536A-Q1 Q100 devices qualified for high-reliability automotive applications targeting zero defects

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