MB39A119 Fujitsu, MB39A119 Datasheet - Page 5

• Manufacturer Part Number: MB39A119
• Description: DC/DC Converter IC
• Manufacturer: Fujitsu

BLOCK DIAGRAM
Hi Side Only
OUTC2
FB123
+INC1
−INC1
+INC2
−INC2
OUTD
−INE1
+INE1
−INE2
+INE2
−INE3
CS
13
14
10
12
15
16
17
8
7
9
3
2
ACIN
<Current Amp2>
4
<Current Amp1>
VREF
<AC Comp.>
<SOFT>
+
−
+
×24.5
−
×25
100 kΩ
+
2.0 V
−
10 µA
<Error Amp3>
<Error Amp1>
ACOK
<Error Amp2>
5
<Over Current Det.>
−
+
−
+
−
+
4.2 V
+
+
−
−
0.2 V
XACOK
3.1 V
22
+INC2
−INC2
(Vo)
Control
Slope
C
T
<PWM Comp.>
−INC2
(V
+
−
<OSC>
Off time
Control
O
18
RT
0.1 V
−2.5 V
−1.5 V
)
OUTC2
0.3 V
2.6 V
H: UVLO, UV
<CV Comp.>
2.6 V
+
+
−
−
release
<UV Comp.>
4.2 V
bias
<Synchronous Cnt.>
+
+
−
−
CVM
VREF
5.0 V
6
<REF>
VREF
19
VB Reg.
VCC
1
<UVLO>
GND
V
20
CC
Drv-2
Drv-1
MB39A119
5.0 V
VREF-
UVLO
UVLO
UVLO
ON/OFF
VCC-
DC/DC
VB-
27
25
28
26
24
23
21
5 5 5
VB
CB
OUT-1
VS
OUT-2
PGND
CTL
5