3-to-8 Cell Li-ion Battery Pack Monitor
ISL94203
Features
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.
• Eight cell voltage monitors support Li-ion CoO , Li-ion
2
Mn O , and Li-ion FePO4 chemistries
2
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
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 I C interface.
• Programmable detection/recovery times for overvoltage,
undervoltage, overcurrent, and short circuit conditions
2
• Configuration/calibration registers maintained in EEPROM
• Open battery connect detection
Applications
• Power tools
• Integrated charge/discharge FET drive circuitry with built-in
charge pump supports high-side N-channel FETs
• Battery back-up systems
• E-bikes
• 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
P+
43V
43V
VBATT
VC8
PSD
CB8
VC7
FETSOFF
CB7
VC6
INT
RGO
CHRG
CB6
VC5
ISL94203
CB5
VC4
SD
EOC
CB4
VC3
SCL
CB3
VC2
SDA
TEMPO
CB2
VC1
xT1
xT2
CB1
VC0
VREF
VSS
ADDR
GND
P-
FIGURE 1. TYPICAL APPLICATION DIAGRAM
December 5, 2012
FN7626.2
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 |Copyright Intersil Americas Inc. 2012. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.
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