DATASHEET
ISL94202
FN8889
Rev.2.00
Mar 8, 2017
Series Charge/Discharge Path 3-to-8 Cell Li-Ion Battery Pack Monitor
1. Overview
The ISL94202 is a Li-ion battery monitor IC that supports from three to eight series connected cells. It provides complete
battery monitoring and pack control. The ISL94202 provides automatic shutdown and recovery from out-of-bounds conditions
and automatically controls pack cell balancing.
The ISL94202 is highly configurable as a stand-alone unit, but can be used with an external microcontroller, which
2
communicates to the IC through an I C interface.
1.1
Features
• Eight cell voltage monitors support Li-ion CoO , Li-ion Mn O , and Li-ion FePO chemistries
2
2
4
4
• 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
1.2
Applications
• Power tools
• Battery back-up systems
• Light electric vehicles
• Portable equipment
• Energy storage systems
• Solar farms
• Medical equipment
• Hospital beds
• Monitoring equipment
• Ventilators
1.3
Related Literature
• For a full list of related documents, visit our website
• ISL94202 product page
FN8889 Rev.2.00
Mar 8, 2017
Page 1 of 89