MB39A107

FUJITSU SEMICONDUCTOR DATA SHEET DS04-27234-1E ASSP For Power Supply Applications (Secondary Battery) DC/DC Converter IC for Charging Li-ion Battery with Synchronous Rectifier MB39A107 s DESCRIPTION The MB39A107 is a DC/DC converter IC suitable for down-conversion, using pulse-width modulation (PWM) charging and enabling output voltage to be set to any desired level from 1 cell to 4 cells. The MB39A107 adopts output for Nch MOS drive of synchronous rectification type. The MB39A107 can be used to monitor the current in an AC adapter or battery, as it contains a current amplifier that can set an offset voltage. It can also be used for applications such as setting the charging voltages for 2 batteries. The MB39A107 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. s FEATURES Built-in low-current control circuits in two systems (supporting dynamically controlled charging) The charge current value can be analog controlled (+INE1 and +INE2 terminal) Built-in synchronous rectification system output for Nch MOS FET Built-in charge pump for driving high-side Nch MOS, providing 100% on-duty support Built-in AC adapter detection function Output voltage setting accuracy : 4.2 V ± 0.74 % (Ta = − 10 °C to + 85 °C) (Continued) s PACKAGE 30-pin plastic TSSOP (FPT-30P-M04) www.DataSheet4U.com www.DataSheet4U.com MB39A107 (Continued) Buil...