DESCRIPTION

The MB3879 is a DC/DC converter IC for parallel charging of 3/4 cell Li-ion & NiMH batteries, which uses the pulse-width modulation (PWM) for controlling output voltages and output currents independently. This IC can dynamically control secondary batterie’s charge current, which detects voltage dropping in an AC adapter in order to keep its power constant (Dynamically controlled charging). This operation allows quick charging by variable charging current in accordance with operating status of a notebook PC.