mb3881pff Fujitsu Microelectronics, Inc., mb3881pff Datasheet - Page 5

• Manufacturer Part Number: mb3881pff
• Description: 8-ch Dc/dc Converter Ic With Synchronous Rectifier For Voltage Step-up And Step-down
• Manufacturer: Fujitsu Microelectronics, Inc.

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