L9963E-TR
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STMicroelectronics L9963E-TR

Manufacturer No:
L9963E-TR
Manufacturer:
STMicroelectronics
Package:
Tape & Reel (TR)
Description:
AUTOMOTIVE CHIP FOR BATTERY MANA
Delivery:
Payment:
iso14001
iso45001
iso9001
iso13485

Product Introduction

Overview

The L9963E is a Li-ion battery monitoring and protecting chip designed by STMicroelectronics for high-reliability automotive applications and energy storage systems. This device is capable of monitoring up to 14 stacked battery cells, making it suitable for 48 V and higher voltage systems. It ensures high accuracy in cell voltage measurement and current monitoring through on-chip coulomb counting. The L9963E also supports the monitoring of up to 7 NTCs (Negative Temperature Coefficients) and communicates via SPI or isolated interfaces. Multiple L9963E devices can be connected in a daisy chain, enabling high-speed, low EMI, and reliable data transmission with a host processor.

Key Specifications

Parameter Min Typ Max Unit
Global Supply Voltage (VBAT) 9.6 - 70 V
Cell Terminal Differential Voltage 0 - 4.7 V
Battery/High Terminal Differential Voltage -0.3 - 61 V
Voltage ADC Error - ±2 mV - mV
Operating Temperature Range -40 - 105 °C
Isolated Serial Communication Speed - 2.66 Mbps - Mbps
Passive Internal Balancing Current - 200 mA - mA
GPIOs - 9 - -

Key Features

  • AEC-Q100 qualified
  • Monitors 4 to 14 cells in series with 0 μs desynchronization delay between samples. Supports 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 ADC with maximum error of ±2 mV in the [0.5 – 4.3] V range.
  • 2.66 Mbps isolated serial communication with regenerative buffer, supporting dual access ring.
  • 200 mA passive internal balancing current for each cell in both normal and silent-balancing mode.
  • 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.

Applications

  • Automotive: 48 V and high-voltage battery packs for hybrid (HE) and full electric (FE) vehicles.
  • Backup energy storage systems and UPS.
  • E-bikes, e-scooters.
  • Portable and semi-portable equipment.

Q & A

  1. What is the L9963E used for? The L9963E is a Li-ion battery monitoring and protecting chip for high-reliability automotive applications and energy storage systems.
  2. How many battery cells can the L9963E monitor? The L9963E can monitor up to 14 stacked battery cells.
  3. What is the accuracy of the voltage ADC in the L9963E? The 16-bit voltage ADC has a maximum error of ±2 mV in the [0.5 – 4.3] V range.
  4. What communication interfaces does the L9963E support? The L9963E supports SPI communication and isolated interfaces.
  5. Can multiple L9963E devices be connected in a chain? Yes, multiple L9963E devices can be connected in a daisy chain and communicate with one host processor via transformer isolated interfaces.
  6. What is the passive internal balancing current of the L9963E? The L9963E has a 200 mA passive internal balancing current for each cell.
  7. Is the L9963E compliant with any safety standards? Yes, the L9963E is full ISO26262 compliant and ASIL-D systems ready.
  8. How many GPIOs does the L9963E have? The L9963E has 9 GPIOs, with up to 7 analog inputs for NTC sensing.
  9. What is the operating temperature range of the L9963E? The operating temperature range is -40°C to 105°C.
  10. Does the L9963E support hot-plug operation? Yes, the L9963E has robust hot-plug performance and does not require Zeners in parallel to each cell.

Product Attributes

Function:Battery Monitor
Battery Chemistry:Lithium Ion
Number of Cells:4 ~ 14
Fault Protection:Over Current
Interface:SPI
Operating Temperature:- 
Mounting Type:Surface Mount
Package / Case:64-TQFP Exposed Pad
Supplier Device Package:64-TQFP-EP (10x10)
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Similar Products

Part Number L9963E-TR L9963T-TR L9963-TR
Manufacturer STMicroelectronics STMicroelectronics STMicroelectronics
Product Status Active Active Active
Function Battery Monitor Power Management Battery Monitor
Battery Chemistry Lithium Ion - Lithium Ion
Number of Cells 4 ~ 14 1 4 ~ 14
Fault Protection Over Current - Over Current
Interface SPI SPI SPI
Operating Temperature - -40°C ~ 105°C (TA) -
Mounting Type Surface Mount Surface Mount Surface Mount
Package / Case 64-TQFP Exposed Pad 16-SOIC (0.154", 3.90mm Width) 64-TQFP Exposed Pad
Supplier Device Package 64-TQFP-EP (10x10) 16-SO 64-TQFP-EP (10x10)

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