MB3883 Datasheet, PDF (31/39 Pages) Fujitsu Component Limited. – 6-ch DC/DC Converter IC With Synchronous Rectification for voltage step-up and step-down

• Application example (Expansion1/2)
A
FB1
R12
2.7 kΩ
R13
22 kΩ
C23
0.1 µF
R6
1 kΩ
35
34
−IN1
R14
15 kΩ
R15
24 kΩ
DTC1
R16 ³⁶
47 kΩ
FB2
B C24 32
R17 ^{0.1 µF}
15 kΩ R7
1 kΩ ₃₁
−IN2
R18
15 kΩ
R19
24 kΩ
DTC2
R20 ³³
47 kΩ
C
FB3
R21
15 kΩ
C25
0.1 µF
29
R22 R8
150 kΩ 1 kΩ ₂₈
R23
15 kΩ
−IN3
R24
24 kΩ
DTC3
30
R25
47 kΩ
E
R26 −IN (A) 4
120 kΩ
9
VIN
(1.8 V ~
5.0 V)
R27
10 kΩ
R28
10 kΩ
OUT (A) 4
10
FB4
C26 11
0.1 µF
R9
1 kΩ ₁₂
D
−IN4
13
R29
47 kΩ
−IN (S) 4
R30
24 kΩ
DTC4
14
R31
47 kΩ
CH1
CH2
CH3
CH4
MB3883
VCC (O)
42
OUT1-1
37
C17
2.2 µF
OUT1-2
38
Q1
R1
150 Ω
C10
3300 pF
C1
4.7 µF
A
L1
15 µH
L2
22 µH
Vo1
(3.3 V)
(250 mA)
C2
Q3
D1 ^{4.7 µF}
OUT2-1
39
C18
2.2 µF
OUT2-2
40
Q2
R2
300 Ω
C11
2700 pF
C3
4.7 µF
B
L3
22 µH
L4
22 µH
Vo2
(2.5 V)
(150 mA)
C4
Q4
D2 ^{4.7 µF}
Vo6
(5.0 V)
OUT3
41
4
3
2
C19
2.2 µF 1
Q5
C
D3
5
6
8
D4
7
C5
1 µF
<CCD>
Vo3-1
(15 V)
(12 mA)
Vo3-2
(−7.5 V)
(2.5 mA)
C6
1 µF
OUT4
43
1
6
C20
2.2 µF
4
Q6
D
VREF
R3
18 kΩ
Q7
R4
27 kΩ
E
D5C1 ⁷_µFV(5o.06 ^V)
5
3
2 _D6
7
D7
8
C8
1 µF
C9
1 µF
<LCD>
Vo4-3
(−15 V)
(4 mA)
Vo4-2
(6.5 V)
(6 mA)
Vo4-1
(13.5 V)
(2.7 mA)
31