Especificações Técnicas

OUTROS PART NUMBERS PARA ESTE COMPONENTE: ISL6251 AHRZ THE ISL6251, ISL6251A 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 EMULATES A DIODE AT LIGHT LOADS TO IMPROVE THE LIGHT LOAD EFFICIENCY AND PREVENT SYSTEM BUS BOOSTING. THE CONSTANT OUTPUT VOLTAGE CAN BE SELECTED FOR 2, 3 AND 4 SERIES LI-ION CELLS WITH 0.5% ACCURACY OVER-TEMPERATURE. IT CAN BE ALSO PROGRAMMED BETWEEN 4.2V 5%/CELL AND 4.2V-5%/CELL TO OPTIMIZE BATTERY CAPACITY. WHEN SUPPLYING THE LOAD AND BATTERY CHARGER SIMULTANEOUSLY, THE INPUT CURRENT LIMIT FOR THE AC ADAPTER IS PROGRAMMABLE TO WITHIN 3% ACCURACY TO AVOID OVERLOADING THE AC ADAPTER, AND TO ALLOW THE SYSTEM TO MAKE EFFICIENT USE OF AVAILABLE ADAPTER POWER FOR CHARGING. IT ALSO HAS A WIDE RANGE OF PROGRAMMABLE CHARGING CURRENT. THE ISL6251, ISL6251A PROVIDES OUTPUTS THAT ARE USED TO MONITOR THE CURRENT DRAWN FROM THE AC ADAPTER, AND MONITOR FOR THE PRESENCE OF AN AC ADAPTER. THE ISL6251, ISL6251A AUTOMATICALLY TRANSITIONS FROM REGULATING CURRENT MODE TO REGULATING VOLTAGE MODE.   FEATURES 0.5% CHARGE VOLTAGE ACCURACY (-10C TO 100C) 3% ACCURATE INPUT CURRENT LIMIT 3% ACCURATE BATTERY CHARGE CURRENT LIMIT 25% ACCURATE BATTERY TRICKLE CHARGE CURRENT LIMIT (ISL6251A) PROGRAMMABLE CHARGE CURRENT LIMIT, ADAPTER CURRENT LIMIT AND CHARGE VOLTAGE FIXED 300KHZ PWM SYNCHRONOUS BUCK CONTROLLER WITH DIODE EMULATION AT LIGHT LOAD OUTPUT FOR CURRENT DRAWN FROM AC ADAPTER AC ADAPTER PRESENT INDICATOR FAST INPUT CURRENT LIMIT RESPONSE INPUT VOLTAGE RANGE 7V TO 25V SUPPORTS 2, 3 AND 4 CELLS BATTERY PACK UP TO 17.64V BATTERY-VOLTAGE SET POINT THERMAL SHUTDOWN SUPPORT PULSE CHARGING LESS THAN 10A BATTERY LEAKAGE CURRENT CHARGE ANY BATTERY CHEMISTRY: LI-ION, NICD, NIMH, ETC. PB-FREE (ROHS COMPLIANT)   APPLICATIONS NOTEBOOK, DESKNOTE AND SUB-NOTEBOOK COMPUTERS PERSONAL DIGITAL ASSISTANT ISL6251AHAZ CI MULTI CHEMISTRY BATTERY CHARGER CONTROLER QSOP24 MAIORES DETALHES DE ISL6251AHAZ NO SITE DO FABRICANTE: HTTPS://WWW.RENESAS.COM/US/EN/DOCUMENT/DST/ISL6251-ISL6251A-DATASHEET TAGS DE ISL6251AHAZ: ISL6251 AHRZ, ISL6251AHAZ-TM ISL6251, ISL6251A, LSL6251, LSL6251A, BATTERY MANAGEMENT ISL6251A QSOP

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