Renesas Electronics Corporation

3- to 8-cell Li-ion Battery-Pack Monitor

Renesas' ISL94203 battery-pack monitor provides full battery monitoring and pack-control

Image of Renesas'3 to 8 Cell Li-ion Battery Pack MonitorRenesas' ISL94203 is a Li-ion battery monitor IC that supports from three to eight series-connected cells. It provides automatic shutdown, recovery from out-of-bounds conditions, and automatically controls pack-cell balancing. The ISL94203 is highly configurable as a stand-alone unit but can be used with an external microcontroller, which communicates to the IC through an I2C interface.

Renesas Battery Management System Tutorial

Renesas ISL94203EVKIT1Z Evaluation Kit User Guide

Features
  • Eight cell-voltage monitors support Li-ion CoO2, Li-ion Mn2O4, and Li-ion FePO4 chemistries
  • Multiple voltage-protection options (each programmable to 4.8 V, 12-bit digital value) and selectable overcurrent protection levels
  • Programmable detection/recovery times for overvoltage, undervoltage, overcurrent, and short-circuit conditions
  • Configuration/calibration registers maintained in EEPROM
  • Open battery-connect detection
  • Integrated charge/discharge FET drive circuitry with built-in charge pump supports high-side, N-channel FETs
  • Cell balancing uses external FETs with internal-state machine or external microcontroller
  • Enters low-power states after periods of inactivity. Charge or discharge current detection resumes normal scan rates
  • Stand-alone pack control, no microcontroller needed
Applications
  • Power tools
  • Battery back-up systems
  • E-bikes

Battery Monitor

ImageManufacturer Part NumberDescriptionNumber of CellsFault ProtectionAvailable QuantityPrice
IC BAT MON MULT-CHEM 3-8C 48TQFNISL94203IRTZ-T7AIC BAT MON MULT-CHEM 3-8C 48TQFN3 ~ 8Over Current, Over/Under Voltage, Short Circuit2309 - Immediate$87.75View Details

Evaluation Kit

ImageManufacturer Part NumberDescriptionFunctionUtilized IC / PartAvailable QuantityPrice
EVAL BOARD FOR ISL94203ISL94203EVKIT1ZEVAL BOARD FOR ISL94203Battery ChargerISL942030 - Immediate$3,381.87View Details
Published: 2015-11-18

Related Product Highlight

ISL942x Family of Battery Monitors The Renesas ISL942x family of Li-ion battery monitor ICs that support anywhere from 3 to 12 series of connected battery cells.

Related Product Training Modules

Battery Management Systems Featuring the ISL94203 The ISL94203 represents countless hours of architecture definition, design creation and applications support capability refinement