DATASHEET ISL6256, ISL6256A FN6499 Rev 3.00 Highly Integrated Battery Charger with Automatic Power Source Selector for September 14, 2010 Notebook Computers The ISL6256, ISL6256A is a highly integrated battery charger Features controller for Li-ion/Li-ion polymer batteries. High Efficiency is 0.5% Charge Voltage Accuracy (-10C to +100C) achieved by a synchronous buck topology and the use of a MOSFET, instead of a diode, for selecting power from the 3% Accurate Input Current Limit adapter or battery. The low side MOSFET emulates a diode at 3% Accurate Battery Charge Current Limit light loads to improve the light load efficiency and prevent 25% Accurate Battery Trickle Charge Current Limit system bus boosting. Programmable Charge Current Limit, Adapter Current The constant output voltage can be selected for 2, 3 and 4 Limit and Charge Voltage series Li-ion cells with 0.5% accuracy over-temperature. It can also be programmed between 4.2V + 5%/cell and Fixed 300kHz PWM Synchronous Buck Controller with 4.2V - 5%/cell to optimize battery capacity. When supplying Diode Emulation at Light Load the load and battery charger simultaneously, the input current Overvoltage Protection limit for the AC adapter is programmable to within 3% Output for Current Drawn from AC Adapter accuracy to avoid overloading the AC adapter, and to allow the system to make efficient use of available adapter power AC Adapter Present Indicator for charging. It also has a wide range of programmable Fast Input Current Limit Response charging current. The ISL6256, ISL6256A provides outputs that are used to monitor the current drawn from the AC Input Voltage Range 7V to 25V adapter, and monitor for the presence of an AC adapter. The Support 2-, 3- and 4-Cells Battery Pack ISL6256, ISL6256A automatically transitions from regulating current mode to regulating voltage mode. Up to 17.64V Battery-Voltage Set Point Control Adapter Power Source Select MOSFET ISL6256, ISL6256A has a feature for automatic power source selection by switching to the battery when the AC adapter is Thermal Shutdown removed or switching to the AC adapter when the AC adapter is Aircraft Power Capable available. It also provides a DC adapter monitor to support aircraft power applications with the option of no battery charging. DC Adapter Present Indicator Ordering Information Battery Discharge MOSFET Control PART TEMP Less than 10A Battery Leakage Current NUMBER PART RANGE PACKAGE PKG. (Notes 1, 2) MARKING (C) (Pb-free) DWG. Supports Pulse Charging ISL6256HRZ ISL 6256HRZ -10 to +100 28 Ld 5x5 QFN L28.5x5 Pb-free (RoHS Compliant) ISL6256HAZ ISL 6256HAZ -10 to +100 28 Ld QSOP M28.15 Applications ISL6256AHRZ ISL6256 AHRZ -10 to +100 28 Ld 5x5 QFN L28.5x5 ISL6256AHAZ ISL6256 AHAZ -10 to +100 28 Ld QSOP M28.15 Notebook, Desknote and Sub-notebook Computers NOTES: Personal Digital Assistant 1. Add -T suffix for tape and reel. Please refer to TB347 for details on reel specifications. 2. These Intersil Pb-free plastic packaged products employ special Pb- free material sets, molding compounds/die attach materials, and 100% matte tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. 3. For Moisture Sensitivity Level (MSL), please see device information page for ISL6256, ISL6256A. For more information on MSL please see techbrief TB363. FN6499 Rev 3.00 Page 1 of 26 September 14, 2010ISL6256, ISL6256A Pinouts ISL6256, ISL6256A ISL6256, ISL6256A (28 LD QFN) (28 LD QSOP) TOP VIEW TOP VIEW 1 28 DCIN DCPRN 2 27 ACPRN VDD 28 27 26 25 24 23 22 3 26 CSON ACSET 1 21 EN CSOP 4 25 CSOP DCSET 5 24 CELLS 2 20 CSIN EN CSIN 6 23 CSIP CELLS 3 19 CSIP ICOMP 7 22 SGATE ICOMP VCOMP 4 18 SGATE 8 21 BGATE VCOMP 5 17 9 20 ICM BGATE ICM PHASE 10 19 UGATE VREF VREF 6 16 PHASE 11 18 BOOT CHLIM UGATE CHLIM 7 15 12 17 VDDP ACLIM 8 9 10 11 12 13 14 13 16 LGATE VADJ 14 15 GND PGND FN6499 Rev 3.00 Page 2 of 26 September 14, 2010 ACLIM DCSET ACSET VADJ VDD GND DCIN PGPGPGNDNDND LGATE DCPRN ACPRN VDDP BOOT CSON