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What is MB39A119?

This electronic component, produced by the manufacturer "Fujitsu", performs the same function as "DC/DC Converter IC".


MB39A119 Datasheet PDF - Fujitsu

Part Number MB39A119
Description DC/DC Converter IC
Manufacturers Fujitsu 
Logo Fujitsu Logo 


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Total 59 Pages



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FUJITSU SEMICONDUCTOR
DATA SHEET
DS04-27247-1E
ASSP for Power Supply Applications (Secondary battery)
DC/DC Converter IC of Synchronous
Rectification for charging Li-ion battery
MB39A119
DESCRIPTION
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. In addition, the constant voltage control
state detection function is built in, which prevents mis-detecting the full charge. 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.
FEATURES
• 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)
PACKAGE
(Continued)
28-pin plastic QFN
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(LCC-28P-M10)
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MB39A119 equivalent
MB39A119
BLOCK DIAGRAM
Hi Side Only
ACIN
4
ACOK
5
<AC Comp.>
+
2.0 V
XACOK
22
+INC1 3
INC1 2
INE1 8
+INE1 7
<Current Amp1>
+
×25
100 k
3.1 V
<Error Amp1>
+
INE2 13
OUTC2 9
<Current Amp2>
+INC2 10
INC2 11
+
×24.5
+INE2 12
<Error Amp2>
+
FB123 14
CVM
6
<CV Comp.>
+
2.6 V
0.1 V <UV Comp.>
+
INC2
(VO)
<PWM Comp.>
+
2.5 V
1.5 V
Off time
Control
H: UVLO, UV
release
VCC
1
5.0 V
VB Reg.
25 VB
258 CB
Drv-1
Drv-2
27 OUT-1
26 VS
24 OUT-2
23 PGND
INE3 15
OUTD 16
<Error Amp3>
+
4.2 V
Slope
Control
<UVLO>
VCC-
UVLO
VB-
UVLO
VREF-
UVLO
<SOFT>
VREF
10 µA
CS 17
<Over Current Det.>
++
0.2 V
+INC2
INC2
(Vo)
CT
2.6 V
+
OUTC2 +
0.3 V
VCC
<Synchronous Cnt.>
<OSC>
4.2 V
bias
<REF>
VREF
5.0 V
<CTL> DC/DC 21 CTL
ON/OFF
18 19 20
RT VREF GND
5


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Part Details

On this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for MB39A119 electronic component.


Information Total 59 Pages
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Download [ MB39A119.PDF Datasheet ]

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