A 4-cell Ni-Cad regulator/charger for notebook computers is described.
LTC1155 dual power MOSFET driver
Ni-Cad battery charger
The new LTC1155 dual power MOSFET driver delivers 12V of gate drive to two N-channel power MOSFETs when powered from a 5V supply with no external components required. This ability, coupled with its micropower current demands and protection features, makes it an excellent choice for high side switching applications which previously required more expensive P-channel MOSFETs.
A notebook computer power supply system is a good example of an application which benefits directly from this high side driving scheme. A 4-cell, ...