BQ40Z60 Complete Multi-Cell Battery Manager | Battery Fuel (Gas) Gauge | TI.com

BQ40Z60 (ACTIVE)

Complete Multi-Cell Battery Manager | Battery Fuel (Gas) Gauge

Complete Multi-Cell Battery Manager | Battery Fuel (Gas) Gauge - BQ40Z60
 

Special note

Consider BQ40Z50-R2: using a separate charger and a separate gauge like BQ40Z50-R2 might allow more flexibility, ease to design and access to newest firmware.

Description

The Texas Instruments bq40z60 device is a Programmable Battery Management Unit that integrates battery charging control output, gas gauging, and protection for completely autonomous operation of 2-series to 4-series cell Li-Ion and Li-Polymer battery packs. The architecture enables internal communication between the fuel gauging processor and battery charger controller to optimize the charging profile based on the external load conditions and power path source management during load transients and adaptor current limitations in the system. The charging current efficiency is scalable for power transfer based on the external components, such as the NFETs, inductor, and sensing resistor.

The device provides an array of battery and system safety functions, including overcurrent in discharge, short circuit in charge, and short circuit in discharge protection for the battery, as well as FET protection for the N-CH FETs, internal AFE watchdog, and cell disconnection detection. Through firmware, the device can provide a larger array of protection features including overvoltage, undervoltage, overtemperature, and more.

Features

  • Fully Integrated 2-Series to 4-Series Cell Li-Ion or Li-Polymer Battery Management Unit
  • Input Voltage Range on Pack+: 2.5 V to 25 V
  • Battery Charger Efficiency > 92%
  • Battery Charger Operation Range: 4 V to 25 V
  • Battery Charger, 1-MHz Synchronous Buck Controller for External NFETs
    • Soft Start to Limit In-Rush Current
    • Current Limit Protection for External Switches
    • Programmable Charging
      • Supports JEITA/Enhanced Charging Modes
  • Fuel Gauging
    • High Resolution 16-Bit Integrator for Coulomb Counter
    • ADC, 16-Bit for Precision V, I, and T Measurements with 16-Channel Multiplexer
    • Support for Simultaneous CC and ADC Sampling (Power Conversion)
    • Supports Two-Wire SMBus v2.0 Interface with Accelerated 400-kHz Programming Option
    • SHA-1 Hash Message Authentication Code (HMAC) Responder for Increased Battery Pack Security
      • Split Key (2 × 64) Stored in Secure Memory
    • Supports Field Updates
  • AFE Protection
    • Programmable Current Protection
      • Overcurrent in Discharge
      • Short-Circuit Current in Charge
      • Short-Circuit Current in Discharge
  • N-FET High-Side Protection FET Drive
  • Support for Four LEDs
  • Thermistor inputs for NTC
  • Compact 32-Pin QFN Package (RHB)

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Parametrics Compare all products in Battery Fuel Gauge

 
Number of Series Cells
Cell Chemistry
Battery Capacity (Max) (mAh)
Communication Interface
Battery Capacity (Min) (mAh)
External Capacity Indication
Implementation
Gas Gauge Algorithm
Cell Balancing
Features
Operating Temperature Range (C)
Pin/Package
BQ27542-G1 BQ27750 BQ28Z610 BQ4050 BQ40Z50-R1 BQ40Z50-R2 BQ78350-R1 BQ78Z100
Single Cell     Single Cell     1-2 Cells     2-4 Cells
Single Cell    
2-4 Cells
Single Cell    
2-4 Cells
Single Cell    
>4 Cells     1-2 Cells    
Li-Ion/Li-Polymer     Li-Ion/Li-Polymer
LiFePO4    
Li-Ion/Li-Polymer     Li-Ion/Li-Polymer
LiFePO4    
Li-Ion/Li-Polymer
LiFePO4    
Li-Ion/Li-Polymer
LiFePO4    
Li-Ion/Li-Polymer
LiFePO4    
Li-Ion/Li-Polymer    
32000     14000     14000     29000     29000     29000     320000     14000    
HDQ
I2C    
I2C     I2C     SMBus     SMBus     SMBus     I2C
SMBus    
HDQ    
100     100     100     500     100     500     100     100    
None     None     None     LED     LED     LED     LCD
LED
SOC    
None    
Pack     Pack     Pack     Pack     Pack     Pack     Pack     Pack    
Impedance Track     Impedance Track     Impedance Track     CEDV     Impedance Track     Impedance Track     CEDV     Impedance Track    
N/A     N/A     External
Internal    
External
Internal    
External
Internal    
External
Internal    
External
Internal    
External
Internal    
SHA-1 Authentication     Accumulated Coulomb Count
Battery Management Unit
Integrated Protector
SHA-1 Authentication    
Battery Management Unit
Cell Balancing
Integrated Protector
SHA-1 Authentication    
Cell Balancing
Integrated Protector
SHA-1 Authentication    
Cell Balancing
Integrated Protector
SHA-1 Authentication
Turbo Mode    
Integrated Protector
SHA-1 Authentication
Turbo Mode    
Cell Balancing
Integrated Protector
SHA-1 Authentication    
Cell Balancing
Integrated Protector
SHA-1 Authentication    
-40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85    
12SON     12SON     12SON     32VQFN     32VQFN     32VQFN     30TSSOP     12SON