Fujitsu MB39A119
The MB39A119 is the Nch MOS drive of the synchronous rectification type DC/DC converter IC using pulse-width modulation (PWM) type that can charge Li-ion battery from 1 cell to 4 cells and suitable for down-conversion. This IC integrates built-in comparator for the voltage detection of the AC adapter and switches the power supply to the AC adapter or battery automatically, enabling supply it to system. The MB39A119 provides a wide range of power supply voltage and low standby current, high efficiency, making it ideal for use as a built-in charge device in products such as notebook PC.| Part No. | MB39A119 |
|---|---|
| Datasheet | MB39A119 Download |
| Manufacturer |  Fujitsu |
| Description | DC/DC Converter IC |
| Buy | Stock & Price |
APPLICATIONS
(Secondary battery) DC/DC Converter IC of Synchronous Rectification for charging Li-ion battery MB39A119●
DESCRIPTION
In addition, the constant voltage control state detection function is built in, which prevents mis-detecting the full charge.●
FEATURES
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● High efficiency : 97 % (Max) High-frequency operation : 1 MHz (Max) Built-in off time control function Built-in voltage detection function of AC adapter (ACOK, XACOK terminal) Preventing mis-detection for the full charge by the constant voltage control state detection function (CVM terminal) (Continued)
● PACKAGE 28-pin plastic QFN (LCC-28P-M10) MB39A119 (Continued)
● Built-in two constant current control circuits
● Analog control of constant current value is possible ( + INE1, + INE2 terminal)
● Built-in output stage for Nch MOS FET synchronous rectification
● Built-in charge stop function at low input voltage
● Output voltage setting accuracy : 4.2 V ± 0.74 % (Ta= − 10 °C to + 85 °C)
● Built-in high accuracy c...
