MB3881 Datasheet, PDF (31/40 Pages) Fujitsu Component Limited. – 8-ch DC/DC Converter IC with Synchronous Rectifier for Voltage Step-up and Step-down

• Enlarged view of A
A
R17
12 kΩ
R18
20 kΩ
FB1
47
C21
0.1 µF
R9
1 kΩ
46
−IN1
DTC1
48
B
R19
20 kΩ
R20
16 kΩ
FB2
44
C22
0.1 µF
R10
1 kΩ
43
−IN2
R33
24 kΩ
DTC2
45
R34
47 kΩ
C
R21
39 kΩ
R22
13 kΩ
FB3
41
C23
0.1 µF
R11
1 kΩ
40
−IN3
R46
24 kΩ
DTC3
42
R47
47 kΩ
D
R23
39 kΩ
R24
13 kΩ
FB4
38
C24
0.1 µF
R12
1 kΩ
37
−IN4
R35
24 kΩ
DTC4
39
R36
47 kΩ
CH1
CH2
CH3
CH4
MB3881
VCC(O)-1
58
R1
OUT1-1 240 Ω
50
C13
49
2200 pF
VSS(O)-1
52
VDD(O)
51
OUT1-2
Vo1
A
(2.0 V)
Q1
L1
33 µH
C33
1 µF
C1
Q9 D1 ^{2.2 µF}
R2
75 Ω
OUT2-1
53
C14
3900 pF
54
OUT2-2
R3
75 Ω
OUT3
56
C15
3900 pF
Vo2
B
(2.8 V)
Q2
C8 2.2 µF L3
15 µH
L2
15 µH
C34
1 µF
C2
Q10 D2 ^{2.2 µF}
Vo3
(5.0 V)
C
Q3
C9 2.2 µF L5
15 µH
L4
6.8 µH
C35
1 µF
C3
D3 ^{2.2 µF}
R4
75 Ω
OUT4
57
C16
3900 pF
Vo4
D
(5.0 V)
Q4
C10 2.2 µF _L7
15 µH
L6
6.8 µH
C36
1 µF
C4
D4 ^{2.2 µF}
GND(O)-1
55
31