(China (Mainland))
Product Summary
The ISL6251AHAZ is a highly integrated battery charger controller for Li-Ion/Li-Ion polymer batteries and NiMH batteries. High Efficiency is achieved by a synchronous buck topology and the use of a MOSFET, instead of a diode, for selecting power from the adapter or battery. The low side MOSFET of ISL6251AHAZ emulates a diode at light loads to improve the light load efficiency and prevent system bus boosting. The applications of the ISL6251AHAZ include Notebook, Desknote and Sub-notebook Computers, Personal Digital Assistant.
Parametrics
ISL6251AHAZ absolute maximum ratings: (1)DCIN, CSIP, CSON to GND: -0.3V to +28V; (2)CSIP-CSIN, CSOP-CSON: -0.3V to +0.3V; (3)PHASE to GND: -7V to 30V; (4)BOOT to GND: -0.3V to +35V; (5)BOOT-PHASE, VDD-GND, VDDP-PGND,; (6)ACPRN to GND: -0.3V to 7V; (7)ACSET to GND: -0.3V to VDD+0.3V; (8)ICM, ICOMP, VCOMP to GND: -0.3V to VDD+0.3V; (9)ACLIM, CHLIM, VREF, CELLS to GND: -0.3V to VDD+0.3V; (10)EN, VADJ, PGND to GND: -0.3V to VDD+0.3V; (11)UGATE: PHASE-0.3V to BOOT+0.3V; (12)LGATE: PGND-0.3V to VDDP+0.3V.
Features
ISL6251AHAZ features: (1)0.5% Charge Voltage Accuracy (-10℃ to 100℃); (2)±3% Accurate Input Current Limit; (3)±5% Accurate Battery Charge Current Limit; (4)±25% Accurate Battery Trickle Charge Current Limit (ISL6251A); (5)Programmable Charge Current Limit, Adapter Current Limit and Charge Voltage; (6)Fixed 300kHz PWM Synchronous Buck Controller with Diode Emulation at Light Load; (7)Output for Current Drawn from AC Adapter; (8)AC Adapter Present Indicator; (9)Fast Input Current Limit Response.
Diagrams
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 ISL6251AHAZ |
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IC BATTERY CHARGER CTRLR 24-QSOP |
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ISL6251AHAZ-T |
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IC BATTERY CHARGER CTRLR 24-QSOP |
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