ISL78600 Datasheet, PDF (1/22 Pages) Intersil Corporation – Multi-Cell Li-Ion Battery Manager

DATASHEET
To request the full datasheet, please visit www.intersil.com/products/isl78600
Multi-Cell Li-Ion Battery Manager
ISL78600
The ISL78600 Li-ion battery manager IC supervises up to 12
series connected cells. The part provides accurate monitoring,
cell balancing and extensive system diagnostics functions. Three
cell balancing modes are incorporated: Manual Balance mode,
Timed Balance mode, and Auto Balance mode. The auto balance
mode terminates balancing functions when a charge transfer
value specified by the host microcontroller has been met.
The ISL78600 communicates to a host microcontroller via an SPI
interface and to other ISL78600 devices using a robust,
proprietary, two-wire Daisy Chain system.
The ISL78600 is offered in a 64 Ld TQFP package and is
specified for operation at a temperature range of -40°C to
+105°C.
Applications
• Hybrid Electric Vehicle (HEV), Plug-in Hybrid Electric Vehicle
(PHEV) and Electric Vehicle (EV) battery packs
• Electric motorcycle battery packs
• Backup battery and energy storage systems requiring high
accuracy management and monitoring
• Portable and semiportable equipment
Features
• Up to 12-cell voltage monitors, support Li-ion CoO₂, Li-ion
Mn₂O₄, and Li-ion FePO4 chemistries
• Cell voltage measurement accuracy ±2.5mV
• 13-bit cell voltage measurement
• Pack voltage measurement accuracy ±100mV
• 14-bit pack voltage and temperature measurements
• Cell voltage scan rate of 19.5µs per cell (234µs to scan
12 cells)
• Internal and external temperature monitoring
• Up to four external temperature inputs
• Robust Daisy Chain communications system
• Integrated system diagnostics for all key internal functions
• Hardwired and communications based fault notification
• Integrated watchdog shuts down device if communication is
lost
• 7µA shutdown current: Enable = V_SS
• 2Mbps SPI
VG1 VG1
ISL78600
DHi2
DLo2
TO OTHER DEVICES (OPTIONAL)
ISL78600
DHi2
DLo2
VG2 VG2
DHi1
DLo1
SCLK
DOUT
DIN
CS
DATA READY
FAULT
EN
HOST
MICRO
VG1
VG1
MONITOR BOARD (Master or Stand-alone)
VG2
MONITOR BOARD (Daisy Chain - Optional)
FIGURE 1. TYPICAL APPLICATION
January 20, 2015
1
FN7672.6
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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