Controller IC Chip - MAX1870AET 1870AE chip for laptop - Ολοκληρωμένο τσιπ φορητού υπολογιστή (Κωδ.1-CHIP0671) The  MAX1870A  step-up/step-down  multichemistry  bat-tery  charger  charges  with  battery  voltages  above  andbelow  the  adapter  voltage.  This  highly  integratedcharger requires a minimum number of external compo-nents. The MAX1870A uses a proprietary step-up/step-down  control  scheme  that  provides  efficient  charging.Analog  inputs  control  charge  current  and  voltage,  andcan be programmed by the host or hardwired.The  MAX1870A  accurately  charges  two  to  four  lithium-ion (Li+) series cells at greater than 4A. A programma-ble input current limit is included, which avoidsoverloading  the  AC  adapter  when  supplying  the  loadand  the  battery  charger  simultaneously.  This  reducesthe maximum adapter current, which reduces cost. TheMAX1870A provides analog outputs to monitor the cur-rent drawn from the AC adapter and charge current. Adigital output indica

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