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Part Name
Description
MB39A119 View Datasheet(PDF) - Fujitsu
Part Name
Description
Manufacturer
MB39A119
DC/DC Converter IC of Synchronous Rectification for charging Li-ion battery
Fujitsu
MB39A119 Datasheet PDF : 52 Pages
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MB39A119
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APPLICATION EXAMPLE
R6
Q2-1 51k
Ω
Q2-2R
S2
R39
16k
Ω
R40
75k
Ω
15m
Ω
R15
24k
Ω
R41
16k
Ω
Hi Side only
ACIN
4
ACOK
5
<AC Comp.>
+
−
2.0V
XACOK
22
R34
100k
Ω
CVM
VCC
6
1
<CV Comp.>
−
+
2.6V
C8
0.1
µ
F
System
C21
0.1
µ
F
R45
100k
Ω
Q5
R46 56k
Ω
+
INC1
3
−
INC1
2
V
IN
R21
8V
24k
Ω
−
INE1
8
+
INE1
~
25V
R20
20k
Ω
C11 6800pF
7
R17
10k
Ω
−
INE2
R32
13
100k
Ω
R51
10
Ω
A
OUTC2
C18 1500pF
9
R33
10k
Ω +
INC2
10
C22 0.22
µ
F
B
R52
R25 R26
10
Ω
9.1k
Ω
15k
Ω
−
INC2
11
+
INE2
C23
12
0.22
µ
F
14
FB123
SW4 SW3
C13 22pF
R28 R27 R24
2k
Ω
16k
Ω
47k
Ω
C14 22pF
R8
R18
33k
Ω
300k
Ω
−
INE3
15
C12 330pF R10
100k
Ω
SW3 SW4 lchg
OFF OFF 4A
OUTD
16
ON OFF 2A
ON ON 0.4A
<Current Amp1>
+
−
×
25
3.1V
100k
Ω
<Error Amp1>
−
+
<Current
+
Amp2>
−
×
24.5
<Error Amp2>
−
+
<Error Amp3>
−
+
4.2V
<SOFT>
VREF
0.1V
<UV Comp.>
+
−
−
INC2
(V
O
)
<PWM Comp.>
+
−
−
2.5 V
−
1.5 V
Off time
Control
H: ULVO,UV
release
Slope
Control
+
−
2.6V
5.0V
VB Reg.
Drv-1
Drv-2
C7
VB
1.0
µ
F
25
D4
CB
28
C6
0.1
µ
F
OUT-1
27
VS
26
OUT-2
24
C1
4.7
µ
F
A
B
Q1-1
L1
lchg
V
O
5.2
µ
H R
S1
R2
33m
Ω
15
Ω
Q1-2 D1
C2
4.7
µ
F
C3 C4 C5
4.7
µ
F 4.7
µ
F 4.7
µ
F Battery
PGND
23
<UVLO>
V
CC
UVLO
VB
UVLO
VREF
UVLO
Output voltage (Battery
voltage) is adjustable.
C9
0.22
µ
F
CS
17
10
µ
A
<Over Current Det.>
+
INC2
−
INC2
0.2V
(V
O
)
C
T
+
OUTC2
−
0.3V
<Sync Cnt.>
V
CC
<OSC>
4.2V
bias
<REF>
VREF
5.0V
<CTL>
DC/DC
21
CTL
ON/OFF
18
RT
R19
39k
Ω
19
20
VREF
GND
C10
0.1
µ
F
32
DS04-27247-3E
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