Cell Balance LSI of 4 to 6 Series Power Storage Element Cells for Automotive

BD14000EFV is a LSI IC designed as a self-controlled cell balancer. It has a built-in shunt-type power storage element balancer function that can respond to 4 to 6 cells. All the functions necessary in a cell balancer are built-in making power storage element cell balancing possible only in this LSI. This chip can be used for electric double layer capacitors (EDLC) with cell detection voltage range of 2.4V to 3.1V and power storage capacitors which is important for cell balancers with similar electrical characteristics It has a built-in multiple over-voltage detection function and can also detect abnormal mode such as any characteristic deterioration in cells. Also, application-dependent operation can be set since enable control is possible.

Small Reel (250pcs) is available.→BD14000EFV-CH2

Product Detail

Part Number | BD14000EFV-CE2
Status | Recommended
Package | HTSSOP-B30
Unit Quantity | 2000
Minimum Package Quantity | 2000
Packing Type | Taping
RoHS | Yes
Functional Safety | FS supportive




Common Standard

AEC-Q100 (Automotive Grade)

Supply Voltage(Min.)[V]


Supply Voltage(Max.)[V]


ON Resistance [mΩ]


Cell Voltage Detection (Min.)[V]


Cell Voltage Detection (Max.)[V]


Operating Temperature (Min.)[°C]


Operating Temperature (Max.)[°C]





  • AEC-Q100 qualified
  • All EDLC cell balancer functions are integrated on a single chip
  • Self- controlled EDLC balance function
  • Adopts shunt resistance method for simple balancing
  • 4 to 6 cell series connection ready
  • Multiple chip series connection is possible
  • Built-in over-voltage detection flag output
  • Detection voltage can be set


    • Evaluation Board
    • BD14000EFV-EVK-001
    • BD14000EFV-EVK-001 uses EDLC cell balance LSI to achieve self-contained cell balance of 4 to 6 cell series EDLC. The cell balance current can be set by the shunt resistor.

  • User's Guide Buy

Design Resources



User's Guide

  • Evaluation Board User's Guide

Technical Articles

Schematic Design & Verification

  • Importance of Probe Calibration When Measuring Power: Deskew
  • Impedance Characteristics of Bypass Capacitor

Thermal Design

  • Thermal Resistance


Simulations (Login Required)

  • Method for Exporting Circuit Data (ROHM Solution Simulator)


  • HTSSOP-B30 Footprint / Symbol

Packaging & Quality

Package Information

  • Package Information
  • Anti-Whisker formation

Manufacturing Data

  • Factory Information

Environmental Data

  • UL94 Flame Classifications of Mold Compound
  • Compliance with the ELV directive
  • REACH SVHC Non-use Declaration
  • RoHS Comission Delegated Directive

Export Information

  • The Export Control Order
  • Export Administration Regulations(EAR)