mb3881pff Fujitsu Microelectronics, Inc., mb3881pff Datasheet - Page 4

• 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.

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MB3881
(Continued)
Control
Power
OSC
CH8
Pin No.
64
33
34
35
28
29
30
31
26
32
27
58
59
49
63
52
24
36
25
55
4
5
6
7
8
3
2
1
GND (O) -1
GND (O) -2
VCC (O) -1
VCC (O) -2
VSS (O) -1
VSS (O) -2
VDD (O)
Symbol
SYNC
CTL-1
CTL-2
CTL-3
CTL-4
CSCP
IN8 (C)
IN8 (C)
DTC8
OUT8
VREF
GND
VCC
FB8
RB8
RT
CT
CS
VB
IN8
IN8
I/O
O
O
O
O
I
I
I
I
I
I
I
I
I
I
Error amplifier output pin.
Error amplifier inverted input pin.
Error amplifier non-inverted input pin.
Short detection comparator inverted input pin.
Short detection comparator non-inverted input pin.
Dead time control pin.
Output current setting pin.
Output pin.
Triangular wave frquency setting resistor connection pin.
Triangular wave frquency setting capacitor connection pin
External synchronous signal input pin.
Power supply, CH 1, 3, 4, 8 control circuit.
“H” level : Power supply operating mode
“L”level : Standby mode
CH 2 control circuit.
“H” level : CH2 operating mode
“L” level : CH2 OFF mode
CH5, 6 control circuit.
“H” level : CH5, CH6 operating mode
“L” level : CH5, CH6 OFF mode
CH7 control circuit.
“H” level : CH7 operating mode
“L” level : CH7 OFF mode
Short protection circuit capacitor connection pin.
CH1, 2, 3, 4, 7 soft start circuit capacitor connection pin.
Reference voltage and control circuit power supply pin.
CH1, 2, 3, 4 output circuit power supply pin.
CH5, 6, 7, 8 output circuit power supply pin.
CH1, 2, 3, 4 output circuit power supply pin.
CH5, 6, 7 output circuit power supply pin.
CH1, 2 synchronous rectifier side output circuit power supply pin.
Refernce voltage output pin.
Triangular wave oscillator regulator output pin.
Ground pin.
CH1, 2, 3, 4 output circuit ground pin.
CH5, 6, 7, 8 output circuit ground pin.
CTL-1pin
CTL-1pin
CTL-1pin
“H” level
“H” level
“H” level
Descriptions