Four_cell_NiCad_regulator_charger

Published:2009/7/24 4:11:00 Author:Jessie | From:SeekIC

Figure 8-14 Shows an LTC1155 dual-power MOSFET driver connected to providecontrol of a four-cell charger/regulator． The LTC1155 has the ability to deliver 12-V of gate drive to two N-channel power MOSFETs when powered from a 5-V supplywith no external component required， The circuit is suited for a notebook-computer supply．(A four-cell NiCad battery pack can be used to power a 5-Vnotebook computer.)Q3 and Q4 must be provided with heatsinks．The regulator ISswitched off by the microprocessor when the battery voltage drops below 4.6V The standby current for the 5-V 2-A regulator is less than 10 μA．The regulator is switched on agam when the battery voltage rlses during charging． LINEAR TECHNOLOGY， DESIGN NOTE 51 P.1



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