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參數(shù)資料
| 型號： | MB3881PFF |
| 廠商： | FUJITSU LTD |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 8-ch DC/DC Converter IC with Synchronous Rectifier for Voltage Step-up and Step-down |
| 中文描述： | 0.2 A SWITCHING CONTROLLER, 800 kHz SWITCHING FREQ-MAX, PQFP64 |
| 封裝： | PLASTIC, LQFP-64 |
| 文件頁數(shù)： | 4/40頁 |
| 文件大小： | 509K |
| 代理商： | MB3881PFF |
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MB3881
4
(Continued)
Pin No.
Symbol
I/O
Descriptions
CH8
4
FB8
IN8
+
IN8
IN8 (C)
+
IN8 (C)
DTC8
O
Error amplifier output pin.
5
I
Error amplifier inverted input pin.
6
I
Error amplifier non-inverted input pin.
7
I
Short detection comparator inverted input pin.
8
I
Short detection comparator non-inverted input pin.
3
I
Dead time control pin.
2
RB8
O
I
Output current setting pin.
64
OUT8
Output pin.
OSC
33
RT
Triangular wave frquency setting resistor connection pin.
34
CT
Triangular wave frquency setting capacitor connection pin
35
SYNC
External synchronous signal input pin.
Control
28
CTL-1
I
Power supply, CH 1, 3, 4, 8 control circuit.
“H” level : Power supply operating mode
“L”level : Standby mode
29
CTL-2
I
CH 2 control circuit.
CTL-1pin
=
“H” level
“H” level : CH2 operating mode
“L” level : CH2 OFF mode
30
CTL-3
I
CH5, 6 control circuit.
CTL-1pin
=
“H” level
“H” level : CH5, CH6 operating mode
“L” level : CH5, CH6 OFF mode
31
CTL-4
I
CH7 control circuit.
CTL-1pin
=
“H” level
“H” level : CH7 operating mode
“L” level : CH7 OFF mode
26
CSCP
O
Short protection circuit capacitor connection pin.
32
CS
CH1, 2, 3, 4, 7 soft start circuit capacitor connection pin.
Power
27
VCC
Reference voltage and control circuit power supply pin.
58
VCC (O) -1
CH1, 2, 3, 4 output circuit power supply pin.
59
VCC (O) -2
CH5, 6, 7, 8 output circuit power supply pin.
49
VSS (O) -1
CH1, 2, 3, 4 output circuit power supply pin.
63
VSS (O) -2
CH5, 6, 7 output circuit power supply pin.
52
VDD (O)
CH1, 2 synchronous rectifier side output circuit power supply pin.
24
VREF
Refernce voltage output pin.
36
VB
O
Triangular wave oscillator regulator output pin.
25
GND
Ground pin.
55
GND (O) -1
CH1, 2, 3, 4 output circuit ground pin.
1
GND (O) -2
CH5, 6, 7, 8 output circuit ground pin.
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