MB3827 Datasheet, PDF (35/41 Pages) Fujitsu Component Limited. – 6-ch DC/DC Converter IC With Synchronous Rectification for voltage step-up and step-down

MB3827
• Enlarged view of A
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
Error
− ^Amp.3
+
+
1.26 V
SCP
Comp.3
−
+
+
1.0 V
PWM
Comp.3
+
+
−
CH1
Drive
1-1
Drive
1-2
Drive
1-3
Drive
1-4
CH2
Drive
2-1
Drive
2-2
CH3
Drive
3
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
51VG(O)1
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
FMMT717
4.7 µF
Vo3
C ^{(3 V)}
22 µH
22 µH
U1FWJ44N
4.7 µF
RL3
13 Ω
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
35