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BQ76PL536-Q1

NOT RECOMMENDED FOR NEW DESIGNS

Stackable cell monitor with overvoltage protector and balancing

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Data sheet
BQ76PL536-Q1 is not recommended for new designs
Although this product continues to be in production to support previous designs, we don't recommend it for new designs. Consider one of these alternates:
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Similar functionality to the compared device
BQ79616-Q1 ACTIVE 16-S automotive precision battery monitor, balancer and integrated protector with ASIL-D compliance Documentation available to aid ISO 26262 system design. Optimized for up to 16-S battery

BQ76PL536-Q1

NOT RECOMMENDED FOR NEW DESIGNS
Data sheet Order now

Product details

Device type Cell monitor and balancer Operating temperature range (°C) -40 to 105 Rating Automotive Communication interface No Communication
Device type Cell monitor and balancer Operating temperature range (°C) -40 to 105 Rating Automotive Communication interface No Communication
HTQFP (PAP) 64 144 mm² 12 x 12
  • 3 to 6 Series Cell Support, All Chemistries
  • Hot-Pluggable
  • High-Speed SPI for Data Communications
  • Stackable Vertical Interface
  • No Isolation Components Required Between ICs
  • Qualified for Automotive Applications
  • Temperature Range –40°C to 105°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 ECC-OTP Registers
  • Built-In Comparators (Secondary Protector) for:
    • Over- 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
  • 3 to 6 Series Cell Support, All Chemistries
  • Hot-Pluggable
  • High-Speed SPI for Data Communications
  • Stackable Vertical Interface
  • No Isolation Components Required Between ICs
  • Qualified for Automotive Applications
  • Temperature Range –40°C to 105°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 ECC-OTP Registers
  • Built-In Comparators (Secondary Protector) for:
    • Over- 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

The bq76PL536-Q1 is a stackable three to six series cell lithium-ion battery pack protector and analog front end (AFE) that incorporates a precision analog-to-digital converter (ADC); independent cell voltage and temperature protection; cell balancing, and a precision 5-V regulator to power user circuitry.

The bq76PL536-Q1 integrates a voltage translation and precision analog-to-digital converter system to measure battery cell voltages with high accuracy and speed.

The bq76PL536-Q1 provides full protection (secondary protection) for overvoltage, undervoltage, and overtemperature conditions. When safety thresholds are exceeded, the bq76PL536-Q1 sets the FAULT output. No external components are needed to configure or enable the protection features.

Cell voltage and temperature protection functions are independent of the ADC system. Programmable protection thresholds and detection delay times are stored in Error Check/Correct (ECC) OTP EPROM, which increases the flexibility and reliability of the battery management system.

The bq76PL536-Q1 is intended to be used with a host controller to maximize the functionality of the battery management system. However, the protection functions do not require a host controller.

The bq76PL536Q1 can be stacked vertically to monitor up to 192 cells without additional isolation components between ICs. A high-speed serial peripheral interface (SPI) bus operates between each bq76PL536-Q1 to provide reliable communications through a high-voltage battery cell stack.

The bq76PL536-Q1 is a stackable three to six series cell lithium-ion battery pack protector and analog front end (AFE) that incorporates a precision analog-to-digital converter (ADC); independent cell voltage and temperature protection; cell balancing, and a precision 5-V regulator to power user circuitry.

The bq76PL536-Q1 integrates a voltage translation and precision analog-to-digital converter system to measure battery cell voltages with high accuracy and speed.

The bq76PL536-Q1 provides full protection (secondary protection) for overvoltage, undervoltage, and overtemperature conditions. When safety thresholds are exceeded, the bq76PL536-Q1 sets the FAULT output. No external components are needed to configure or enable the protection features.

Cell voltage and temperature protection functions are independent of the ADC system. Programmable protection thresholds and detection delay times are stored in Error Check/Correct (ECC) OTP EPROM, which increases the flexibility and reliability of the battery management system.

The bq76PL536-Q1 is intended to be used with a host controller to maximize the functionality of the battery management system. However, the protection functions do not require a host controller.

The bq76PL536Q1 can be stacked vertically to monitor up to 192 cells without additional isolation components between ICs. A high-speed serial peripheral interface (SPI) bus operates between each bq76PL536-Q1 to provide reliable communications through a high-voltage battery cell stack.
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Technical documentation

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Type Title Date
* Data sheet Lithium-Ion Battery Monitor and Secondary Protection IC for EV and HEV Apps datasheet 02 May 2011
Application note bq76PL536/536A/536AQ1 Communication Basics (Rev. B) 05 Jul 2011
Application note Multi-Cell Li-Ion Battery Management System Using MSP430F5529 and bq76PL536 16 Dec 2010
Application note Improving Communications With the bq76PL536 11 Aug 2010

Design & development

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Software programming tool

BQ76PL536PGM-1-SW — BQ76PL536PGM-1 Programming Software

The BQ76PL536PGM-1 tool interfaces with the bq76PL536PGM-1 programming board
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HTQFP (PAP) 64 View options
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