Controller IC Chip - MOFSET BQ24742 24742 BQ24742RHDR BQ24742RHD QFN-28 chip for laptop - Ολοκληρωμένο τσιπ φορητού υπολογιστή (Κωδ.1-CHIP0341) Li-Ion or Li-Polymer Battery Charger with Low lq and Accurate Trickle Charge  The bq24741/2 is a high-efficiency, synchronous battery charger with integrated compensation, offering low component count for space-constrained Li-ion or Li-polymer battery charging applications. Ratiometric charge current and voltage programming allows high regulation accuracies, and can be either hardwired with resistors or programmed by the system power-management microcontroller using a DAC or GPIOs. The bq24741/2 charges two, three, or four series Li+ cells, supporting up to 10 A of charge current, and is available in a 28-pin, 5x5-mm2 thin QFN package.  NMOS-NMOS Synchronous Buck Converter Resistor-Programmable Switching Frequency between 300 kHz and 800 kHz 8 V-24 V Input Voltage Operation Range Cells Pin Support Two to Four Li-Ion Cells up to 18 V Battery Vol

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