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FUJITSU SEMICONDUCTOR DATA SHEET
DS04-27710-2E
ASSP For Power Supply Applications (Secondary battery)
DC/DC Converter IC for Charging Li-ion Battery
MB3888
s DESCRIPTION
The MB3888 is a DC/DC converter IC 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. The MB3888 provides a broad power supply voltage range and low standby current as well as high efficiency, making it ideal for use as a built-in charging device in products such as notebook PC. This product is covered by US Patent Number 6,147,477.
s FEATURES
• • • • • Output voltage setting using external resistor : 1 cell to 4 cells High efficiency : 96% (VIN = 19 V, Vo = 16.