The ISL94203 is a Li-ion battery monitor IC that supports from
3 to 8 series connected cells. It provides full battery monitoring
and pack control. The ISL94203 provides automatic shutdown
and 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.

Features
• Eight cell voltage monitors support Li-ion CoO2, Li-ion
Mn2O4 and Li-ion FePO4 chemistries
• Stand-alone pack control - No microcontroller needed
• Multiple voltage protection options
(Each programmable to 4.8V; 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

Applications
• Power tools
• Battery back-up systems
• E-bikes