Intersil's 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.
Intersil Battery Management System Tutorial
Intersil ISL94203EVKIT1Z Evaluation Kit User Guide
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- 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
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- 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
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| Applications |
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- Power tools
- Battery back-up systems
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