DATASHEET
ISL94202
Series Charge/Discharge Path 3-to-8 Cell Li-ion Battery Pack Monitor 1. FN8889
Rev.2.00
Mar 8, 2017 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
communicates to the IC through an I2C interface. 1.1 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 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 ISL94202 1.4 1. Overview Typical Application Diagram P+ LDMON CHMON C2
C3 C1 DFET VDD PCFET VBATT CFET CS2 43V CS1 43V VC8
PSD CB8
VC7 FETSOFF CB7
VC6 INT
RGO CB6
VC5 ISL94202 CB5
VC4
CB4
VC3
CB3
VC2
CB2 …
