MB39A107 Datasheet, PDF (1/45 Pages) Fujitsu Component Limited. – DC/DC Converter IC for Charging Li-ion Battery with Synchronous Rectifier

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)
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s PACKAGE
30-pin plastic TSSOP
(FPT-30P-M04)