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Product details

Parameters

Number of series cells (Min) 3 Vin (Max) (V) 27 Features Cell balancing Number of series cells (Max) 6 Operating temperature range (C) -40 to 85 Rating Catalog open-in-new Find other Battery monitors & balancers

Package | Pins | Size

HTQFP (PAP) 64 100 mm² 10 x 10 open-in-new Find other Battery monitors & balancers

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
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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.

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Technical documentation

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Type Title Date
* Data sheet bq76PL536A 3-to-6 Series Cell Lithium-Ion Battery Monitor and Secondary Protection IC for Applications datasheet (Rev. C) Oct. 19, 2016
Technical article How to stack battery monitors for high-cell-count industrial applications Feb. 11, 2021
Application note Designing EMI/EMC Safe Battery Pack Jun. 14, 2016
User guide bq76PL536A and bq76PL536A-Q1 EVM Quick Start Guide (Rev. D) Jul. 28, 2015
Application note bq76PL536/536A/536AQ1 Communication Basics (Rev. B) Jul. 05, 2011
Application note Multi-Cell Li-Ion Battery Management System Using MSP430F5529 and bq76PL536 Dec. 16, 2010
Application note Improving Communications With the bq76PL536 Aug. 11, 2010

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARD Download
document-generic User guide
399
Description

BQ76PL536EVM-3, Evaluation Module for the BQ76PL536A/bq76PL536A-Q1 Lithium-Ion Battery Monitor and Secondary Protection IC. The User’s Guide document covers the initial connection and installation of the Texas Instruments bq76PL536A/bq76PL536A-Q1 Evaluation Module (EVM), supplied in kit form (...)

Software development

SUPPORT SOFTWARE Download
BQ76PL536EVM-3 Software
BQ76PL536EVM-3-SW The BQ76PL536EVM-3 tool interfaces with the bq76PL536EVM-3 evaluation board
Features
  • Monitor voltage and temperature readings from EVM
  • Graphically plot monitored data
  • Modify safety setting for your cell selection
  • Send commands to balance cells
SUPPORT SOFTWARE Download
SLUC240B.ZIP (1084 KB)

CAD/CAE symbols

Package Pins Download
HTQFP (PAP) 64 View options

Ordering & quality

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  • Qualification summary
  • Ongoing reliability monitoring

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