FUJITSU SEMICONDUCTOR DATA SHEET DS04-27248-1E ASSP for Power Supply Applications (Secondary battery) DC/DC Converter IC for Charging Li-ion Battery MB39A125/126 ■ DESCRIPTION MB39A125/126 is a DC/DC converter IC for charging Li-ion battery, which is suitable for down-conversion, and uses pulse width modulation (PWM) for controlling the output voltage and current independently.
This IC integrates the build-in comparator for the voltage detection of the AC adapter, and selects the AC adapter or battery automatically for power supply to the system.
Provides a wide range of power supply voltage, low standby current, and high efficiency, which makes them ideal as a built-in charging device i...

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