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MB3881 Fiches technique(PDF) 5 Page - Fujitsu Component Limited.

No de pièce MB3881
Description  8-ch DC/DC Converter IC with Synchronous Rectifier for Voltage Step-up and Step-down
Download  40 Pages
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Fabricant  FUJITSU [Fujitsu Component Limited.]
Site Internet  http://edevice.fujitsu.com/fmd/en/index.html
Logo FUJITSU - Fujitsu Component Limited.

MB3881 Fiches technique(HTML) 5 Page - Fujitsu Component Limited.

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MB3881
5
s
s
s
s BLOCK DIAGRAM
• General view
Drive
1-1
Drive
1-2
+
+
+
+
+
+
+
DTC1
Error
Amp.1
SCP
Comp.1
1.25 V
1.0 V
VB1
CTL-4
CS
CTL-2
DTC8
+IN7
PWM
Comp.1-1
PWM
Comp.1-2
VCC(O)-1
VSS(O)-1
VDD(O)
OUT1-1
OUT1-2
FB2
−IN2
−IN3
−IN4
FB5
−IN5(C)
DTC5
−IN5
VCC(O)-2
VSS(O)-2
−IN6
OUT6
GND(O)-2
VCC
CTL-1
OUT7
CS CTL
CTL
1
,3,4
Logic
Buff
Buff
×0.8
SYNC RT
CT
CSCP
VREF
GND
2.5 V
1.73 V
1.0 V
1.73 V
1.0 V
0.8 V
0.3 V
UVLO
SCP
Ref
Power
ON/OFF
CTL
OSC
47
46
48
43
40
37
21
15
12
29
CTL-3 30
31
32
35
33
34
26
24
25
27
28
59
51
52
49
GND(O)-1
55
50
58
−IN1
FB1
CH1
Drive
2-1
Drive
2-2
+
+
+
+
+
+
+
Error
Amp.2
SCP
Comp.2
1.25 V
1.0 V
VB2
PWM
Comp.2-1
PWM
Comp.2-2
CH2
A
B
C
Drive
3
+
+
+
+
+
+
Error
Amp.3
SCP
Comp.3
1.25 V
1.0 V
PWM
Comp.3
CH3
Drive
4
+
+
+
+
+
+
Error
Amp.4
SCP
Comp.4
1.25 V
1.0 V
PWM
Comp.4
PWM
Comp.5
CH4
Drive
5
+
+
+
+
+
Error
Amp.5
SCP
Comp.5
0.6 V
CH5
OUT2-1
53
OUT2-2
54
DTC2 45
OUT3
56
DTC3 42
FB3 41
DTC4 39
FB4 38
OUT4
57
OUT5
60
63
20
23
+IN5 22
PWM
Comp.6
Drive
6
+
+
+
+
+
Error
Amp.6
SCP
Comp.6
0.6 V
CH6
PWM
Comp.7
Drive
7
+
+
+
+
+
+
+
+
Error
Amp.7
SCP
Comp.7
1.25 V
1.0 V
CH7
CH8
19
61
FB6 14
−IN6(C) 17
+IN6 16
DTC6 13
OVP 18
PWM
Comp.8
Drive
8
+
+
+
Error
Amp.8
SCP
Comp.8
62
OUT8
64
RB8
2
1
FB7 10
−IN7 11
FB8 4
−IN8 5
+IN8 6
−IN8(C) 7
+IN8(C) 8
3
DTC7
20 k
80 k
9
CT1
CT2
CT
VB
2 V
36
44
H : ON (Power/CH1, 3, 4, 8)
L : OFF (Standby mode)
(64 pin)


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