Datasheet Summary
FUJITSU SEMICONDUCTOR DATA SHEET
DS04-27703-2E
ASSP For Power Supply Applications (Lithium ion battery charger)
DC/DC Converter IC for Charging MB3875/MB3877 s DESCRIPTION
The MB3875 and MB3877 are charging DC/DC converter ICs suitable for down-conversion, which uses pulse width modulation (PWM) for controlling the output voltage and current independently. These ICs can dynamically control the secondary battery’s charge current by detecting a voltage drop in an AC adapter in order to keep its power constant (dynamically-controlled charging). The charging method enables quick charging, for example, with the AC adapter during operation of a notebook PC. With an on-chip output voltage...