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

BQ76PL536A
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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

Parametrics

Compare all products in Battery monitors & balancers Email Download to Excel
Part number Order Vin (Max) (V) Number of series cells (Min) Number of series cells (Max) Features Operating temperature range (C) Rating Package Group Package size: mm2:W x L (PKG)
BQ76PL536A Order now 27     3     6     Cell Balancing     -40 to 85     Catalog     HTQFP | 64     64HTQFP: 144 mm2: 12 x 12 (HTQFP | 64)    
BQ76PL455A Order now 79.2     6     16     Cell Balancing     -40 to 85     Catalog     TQFP | 80     80TQFP: 144 mm2: 12 x 12 (TQFP | 80)    
BQ76PL455A-Q1 Samples not available 79.2     6     16     Cell Balancing     -40 to 105     Automotive     TQFP | 80     80TQFP: 144 mm2: 12 x 12 (TQFP | 80)    
BQ76PL536A-Q1 Order now 27     3     6     Cell Balancing     -40 to 105     Automotive     HTQFP | 64     64HTQFP: 144 mm2: 12 x 12 (HTQFP | 64)