BQ40Z60 (ACTIVE)

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

 

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)

View more

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
BQ40Z60 BQ27542-G1 BQ27750 BQ28Z610 BQ4050 BQ40Z50-R1 BQ40Z50-R2 BQ78350-R1 BQ78Z100
2-4 Cells    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
LiFePO4   
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   
29000    32000    14000    14000    29000    29000    29000    320000    14000   
SMBus    HDQ
I2C   
I2C    I2C    SMBus    SMBus    SMBus    I2C
SMBus   
HDQ   
100    100    100    100    500    100    500    100    100   
LED    None    None    None    LED    LED    LED    LCD
LED
SOC   
None   
Pack
System   
Pack    Pack    Pack    Pack    Pack    Pack    Pack    Pack   
IT (High accuracy)    IT (High accuracy)    IT (High accuracy)    IT (High accuracy)    CEDV    IT (High accuracy)    IT (High accuracy)    CEDV    IT (High accuracy)   
External
Internal   
N/A    N/A    External
Internal   
External
Internal   
External
Internal   
External
Internal   
External
Internal   
External
Internal   
Battery Management Unit
Cell Balancing
Integrated Protector
SHA-1 Authentication
Turbo Mode   
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    -40 to 85   
32VQFN    12SON    12SON    12SON    32VQFN    32VQFN    32VQFN    30TSSOP    12SON