MB3827 Datasheet, PDF (34/41 Pages) Fujitsu Component Limited. – 6-ch DC/DC Converter IC With Synchronous Rectification for voltage step-up and step-down

MB3827
s APPLICATION EXAMPLE
• General view
A
0.1 µF
FB1 ₄₅
36 kΩ
1 KΩ
44
−IN1
12 kΩ
DTC1-1 ₄₃
22 kΩ
DTC1-3 ₄₂
47 kΩ
20 kΩ
DTC1-4 ₄₁
18 kΩ
B
0.1 µF
FB2 ₃₈
36 kΩ
1 KΩ
−IN2 ³⁹
12 kΩ
22 kΩ
DTC2 ₄₀
47 kΩ
Error
− ^Amp.1
+
+
1.26 V
SCP
− ^Comp.1
+
+
1.0 V
RB1
+
−
SEL
Comp.
1.26 V
Error
− ^Amp.2
+
+
1.26 V
SCP
Comp.2
−
+
+
1.0 V
VB1-1 PWM
(0.50 V) Comp.1-1
+
+
VB1-2 ^−
(0.55 V) PWM
Comp1-2.
+
−
PWM
Comp.1-3
−
−
+
VB1-4 PWM
(0.02 V) Comp.1-4
+
+
−
PWM
Comp.2-1
+
+
VB2 ^−
(0.04 V) PWM
Comp.2-2
+
−
C
0.1 µF
FB3 ₃₇
22 kΩ 1 KΩ
36
−IN3
16 kΩ
24 kΩ DTC3
35
47 kΩ
D
0.1 µF
FB4 ₂₀
22 kΩ 1 KΩ
VIN
(3.6 V)
21
−IN4
16 kΩ
24 kΩ DTC4 ₂₂
47 kΩ
E
150 kΩ
0.1 µF
FB5 ₁₉
13 kΩ
1 KΩ
18
−IN5
15 kΩ
-IN(C)5 ₁₇
24 kΩ
DTC5 ₁₆
47 kΩ
F
56 kΩ
−IN(A)6 ₁₀
10 kΩ
OUT(A)6
11
0.1 µF
10 kΩ ^{FB6 13}
1 KΩ
−IN6 ¹²
47 kΩ−_{IN(C)6 14}
G
24 kΩ DTC6 ₁₅
47 kΩ
Error
− ^Amp.3
+
+
1.26 V
SCP
Comp.3
−
+
+
1.0 V
Error
− ^Amp.4
+
+
1.26 V
SCP
Comp.4
−
+
+
1.0 V
Error
− ^Amp.5
+
+
1.26 V
SCP
− ^Comp.5
+
+
1.26 V
INV
Amp.6
−
+
Error
− ^Amp.6
+
+
1.26 V
SCP
Comp.6
−
+
+
1.26 V
PWM
Comp.3
+
+
−
PWM
Comp.4
+
+
−
PWM
Comp.5
+
+
−
PWM
Comp.6
+
+
−
CH1
Drive
1-1
Drive
1-2
Drive
1-3
Drive
1-4
CH2
Drive
2-1
Drive
2-2
CH3
Drive
3
CH4
Drive
4
CH5
Drive
5
CH6
Drive
6
FB7 ₅
0.1 µF
−IN7-1
6
H
8
+IN7
I
−IN7-2
7
Error
− Amp.7
+
10 kΩ
Voffset
1.6 V
DTC7 ₉
1 µF
23
−IN(C)8
VB : 2 V
48.5 kΩ
PWM
− ^Comp.7
0.77 V −
+
30.1 kΩ
SCP
Comp.7
+
−
VSCP
0.9 V
SCP
− ^Comp.8
+
1.26 V
CH7
Drive
7
53VCC(O)1, ²
160 Ω
OUT1-1
52
54
3300 pF
VSS(O)1, 2
FMMT717
Vo1
A ^{(5 V)}
U1FWJ44N
22 µH CPH3403
U1FWJ44N
RL1
50 Ω
50 _OUT1-2
100 pF
47
10 kΩ
RB1
49 ^OUT1-3
VG(O)1
51
OUT1-4
48
CPH3403 FMMT617 4.7 µF
U1FWJ44N
GND(O)1
46
91 Ω
OUT2-1
55
3300 pF
OUT2-2
57
4.7 µF
FMMT717
Vo2
B ^{(5 V)}
22 µH
22 µH _U1FWJ44N
4.7 µF
RL2
50 Ω
CPH3403
58
VCC(O)
3, 4
91 Ω
OUT3
60
59 ^{3300 pF}
VSS(O)
3, 4, 5, 6
4.7 µF
FMMT717
Vo3
C ^{(3 V)}
22 µH
22 µH
U1FWJ44N
4.7 µF
RL3
13 Ω
91 Ω
OUT4
61
3300 pF
4.7 µF
FMMT717
Vo4
D ^{(3 V)}
22 µH
22 µH
U1FWJ44N _RL4
13 Ω
4.7 µF
GND(O)
2, 3, 4
56
64
VCC(O)
5, 6, 7
820 Ω
OUT5
62
3300 pF
Vo2
(5.0 V)
E
FMMT717
MA796
4.7 µF
MA796
4.7 µF
Vo5-1
(15 V)
RL5-1
1.5 kΩ
Vo5-2
(−7.5 V)
RL5-2
3 kΩ
820 Ω
OUT6
63
3300 pF
G
2SD1621
VREF
18 kΩ
27 kΩ
Vo6-2
F
(−7 V)
FMMT717
MA796
Vo2(5 V)
4.7 µF
Vo6-1
(11 V)
RL6-1
3 kΩ
MA796
Vo6-3
MA796 −14 V
4.7 µF
RL6-2
1 kΩ
4.7 µF RL6-3
VG(O) ^{3.9 kΩ}
(8 V)
VSS(O)
(2 V)
H
I
RB491D
4.7 µF
4.7 µF
MA796
OUT7
1
100 pF
24 kΩ
MA796
2
FMMT617
4.7 µF
RB7
VCC(O)
(5.2 V)
GND(O)
5, 6, 7
3
FMMT717: ZETEX plc.
FMMT617: ZETEX plc.
CPH3403: SANYO Electric Co., Ltd.
U1FWJ44N:TOSHIBA CORPORATION
MA796: Matsushita Electronic
Components Co., Ltd.
2SD1621: SANYO Electric Co., Ltd.
RB491D: ROHM CO.LTD
CTL1-4 CS CTL
CTL5 28
Logic
CTL6 29
Buff
Buff ×0.8
Power
+ Comp.
−
0.6 V
−1.8 V
−1.1 V
−1.8 V
−1.1 V
−0.8 V
−0.3 V
CS1-6 ₃₀
0.1 µF
UVLO
2V
32
VB
0.1 µF
OSC
33 34
RT CT
18 kΩ ^{100 pF}
SCP
31
CSCP
0.1 µF
Power
Ref ON/OFF
CTL
2.5 V
24
25
VREF GND
4 XENB1-6
26 ^VCC
27 ^{CTL1-4, 7}
A
B
C
H: Power/CH1 to 6 in OFF
L: Control by CTL terminal function
H: ON (Power/CH1 to 4,7)
L: OFF (Standby mode)
0.1 µF
34