BQ30Z554-R1 2 Series, 3 Series, and 4 Series Li-Ion Battery Pack Manager |

BQ30Z554-R1 (NRND) 2 Series, 3 Series, and 4 Series Li-Ion Battery Pack Manager


Not Recommended for New Designs (NRND)

Replaced By BQ40Z50-R1 – The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.

TI does not recommend using this part in a new design. This product continues to be in production to support existing customers.


The bq30z554-R1 device is a fully integrated Impedance Track gas gauge and analog monitoring single-package solution that provides protection and monitoring with authentication for 2-series, 3-series, and 4-series cell Li-Ion battery packs. The bq30z554-R1 device incorporates sophisticated algorithms that offer cell balancing while charging or at rest.

The device communicates via an SBS v1.1 interface, providing high accuracy cell parameter reporting and control of battery pack operation, and can be designed into systems that require AC peak power (TURBO mode), using a method to ensure that system performance is not disrupted.

An optimum balance of quick response hardware-based protection along with intelligent CPU control delivers an ideal pack solution. The device has flexible user-programmable settings of critical system parameters, such as voltage, current, temperature, and cell imbalance, among other conditions.

The bq30z554-R1 device has advanced charge algorithms, including JEITA support, enhanced cell charging, and adaptive charging compensating charge losses, enabling faster charging. In addition, the bq30z554-R1 device can monitor critical parameters over the life of the battery pack, tracking usage conditions.

A general purpose output is used for power interruption, employing an external push button switch.

The advanced snapshot and black box functionality show critical information for analysis of returned battery packs.

SHA-1 authentication with secure memory for authentication keys enables identification for genuine battery packs beyond doubt.


  • Fully Integrated 2-Series, 3-Series, and 4-Series
    Li-Ion or Li-Polymer
    Cell Battery Pack Manager and Protection
  • High Side N-CH Protection FET Drive
  • Impedance Track Gas Gauging
  • Integrated Cell Balancing While Charging or At Rest
  • PF Snapshot and Black Box Technology Analyze
    Returned Packs
  • AC Peak Power Information Capability
    (TURBO Mode)
  • SBS v1.1 Interface
  • Low Power Modes
    • Low Power: < 180 µA
    • Sleep < 76 µA
  • Complete Set of Advanced Protections:
    • Internal Cell Short
    • Cell Imbalance
    • Cell Voltage
    • Overcurrent
    • Temperature
    • FET Protection
  • Sophisticated Charge Algorithms
    • JEITA
    • Enhanced Charging
    • Adaptive Charging
    • Cell Balancing While Charging or At Rest
  • General Purpose Output for Power Interrupt
  • Diagnostic Lifetime Data Monitor
  • SHA-1 Authentication
  • Small Package: TSSOP