2x Intersil ISL88732HRTZ ISL88732 88732 SMBus Level 2 Battery Charger IC

KEY FEATURES

•    Boost Mode to support Intel “Turbo Mode”
•    Pin compatible with ISL88731
•    Over-temp and overcurrent protection
•    0.5% battery voltage accuracy
•    4% adapter current limit accuracy
•    3% charge current accuracy
•    SMBus 2-wire serial interface
•    Charge current limited by SMBus DAC OR analog voltage at the CCLIM pin
•    Turbo-boost discharge current limit can be set to 3.3x, 4.85x, 6.37x or 9.31x the charge current limit by SMBus command
•    Monitor outputs
•    Adapter current (3% accuracy)
•    Adapter overcurrent ALERT#. Threshold set by resistor divider
•    AC-adapter detection
•    11-bit battery voltage setting
•    6-bit charge current/adapter current setting
•    8A maximum battery charger current

The ISL88732 is a highly integrated Lithium-ion battery charger controller, programmable over the SMBus system management bus (SMBus). The ISL88732 is intended to be used in a smart battery charger (SBC) within a smart battery system (SBS) that throttles the charge power such that the current from the AC-adapter is automatically limited. High efficiency is achieved with a DC/DC synchronous-rectifier buck converter, equipped with diode emulation for enhanced light load efficiency. The ISL88732 charges one to four Lithium-ion series cells, and delivers up to 8A charge current. Integrated MOSFET drivers and bootstrap diode result in fewer components and smaller implementation area. Low offset current-sense amplifiers provide high accuracy with 10mΩ sense resistors. The ISL88732 provides 0.5% end-of-charge battery voltage accuracy. The ISL88732 is available in a small 5mmx5mm 28 Ld Thin (0.8mm) QFN package.