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  • The L9963 is a Li-ion battery monitoring and protection chip for high-reliability automotive applications and energy storage systems. Up to 14 stacked battery cells can be monitored to meet the requirements of 48 V and higher voltage systems.

    Each cell voltage is measured with high accuracy, as well as the current for the on-chip coulomb counting. The device can monitor up to 7 NTCs. The information is transmitted through SPI communication or isolated interface.
    Multiple L9963 can be connected in a daisy chain and communicate with one host processor via the transformer isolated interfaces, featuring high-speed, low EMI, long distance, and reliable data transmission.
    Passive balancing with programmable channel selection is offered in both normal and low power mode (silent balance). The balancing can be terminated automatically based on internal timer interrupt. Nine GPIOs are integrated for external monitoring and controlling. The L9963 features a comprehensive set of fault detection and notification functions to meet the safety standard requirements.

    Key Features

    • AEC-Q100 qualified
    • Measures 4 to 14 cells in series, with 0 us desynchronization delay between samples. Supports also busbar connection without altering cell results
    • Coulomb counter supporting pack overcurrent detection in both ignition on and off states. Fully synchronized current and voltage samples
    • 16-bit voltage measurement with maximum error of ±2 mV in the [1.7 – 4.7] V range, in whole operating temp range
    • 2.66 Mbps isolated serial communication with regenerative buffer, supporting dual access ring. Less than 2 µs latency between start of conversion of the 1st and the 15th device in a chain. Less than 4 ms to convert and read 96 cells in a system using 8 L9963. Supports both transformer and capacitive based isolation
    • 200 mA passive internal balancing current for each cell in both normal and silent-balancing mode. Possibility of executing cyclic wake-up measurements. Manual/Timed balancing, on multiple channels simultaneously; Internal/external balancing
    • Fully redundant cell measurement path, with ADC Swap, for enhanced safety and limp home functionality
    • Intelligent diagnostic routine providing automatic failure validation. Redundant fault notification through both SPI Global Status Word (GSW) and dedicated FAULT line
    • Two 5 V regulators supporting external load connection with 25 mA (VCOM) and 50 mA (VTREF) current capability
    • 9 GPIOs, with up to 7 analog inputs for NTC sensing
    • Robust hot-plug performance. No Zeners needed in parallel to each cell
    • Full ISO26262 compliant, ASIL-D systems ready
    • TQFP64EP package

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Part Number
Marketing Status
Quantity
Budgetary Price (US$)*
Package
Packing Type
Temperature (°C) ECCN (US)
More info
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L9963-TR
Active
1000 19.3 TQFP 64 10x10x1.0 Tape And Reel - - EAR99
MORE INFO

Country of Origin:

-

No availability of distributors reported, please contact our sales office
L9963
Active
1000 19.3 TQFP 64 10x10x1.0 Tray - - EAR99
MORE INFO

Country of Origin:

-

No availability of distributors reported, please contact our sales office

L9963-TR

Marketing Status

Active

Quantity

1000

Unit Price (US$)

19.3*

Unit Price (US$)

19.3

Package

TQFP 64 10x10x1.0

Packing Type

Tape And Reel

Operating Temperature (°C)

(min)

-

(max)

-

ECCN (US)

EAR99

Country of Origin

-

L9963

Marketing Status

Active

Quantity

1000

Unit Price (US$)

19.3*

Unit Price (US$)

19.3

Package

TQFP 64 10x10x1.0

Packing Type

Tray

Operating Temperature (°C)

(min)

-

(max)

-

ECCN (US)

EAR99

Country of Origin

-

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

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Technical Documentation

    • Description Version Size Action
      DB4045
      Automotive chip for battery management applications
      1.0
      434.2 KB
      PDF
      DB4045

      Automotive chip for battery management applications

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
L9963
Active
TQFP 64 10x10x1.0 Automotive Ecopack2
L9963-TR
Active
TQFP 64 10x10x1.0 Automotive Ecopack2

L9963

Package:

TQFP 64 10x10x1.0

Material Declaration**:

Marketing Status

Active

Package

TQFP 64 10x10x1.0

Grade

Automotive

RoHS Compliance Grade

Ecopack2

L9963-TR

Package:

TQFP 64 10x10x1.0

Material Declaration**:

Marketing Status

Active

Package

TQFP 64 10x10x1.0

Grade

Automotive

RoHS Compliance Grade

Ecopack2

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

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