Fujitsu - MB3887

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Contents

FUJITSU SEMICONDUCTOR DATA SHEET DS04 27709 3E ASSP For Power Supply Applications Secondary battery DC DC Converter 1C for Charging Li ion battery MB3887 DESCRIPTION The MB3887 is a DC DC converter 1C suitable for down conversion using pulse width PWM charging and enabling output voltage to be set to any desired level from one cell to four cells 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 The MB3887 provides a broad power supply voltage range and low standby current as well as high efficiency ...