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): 5/40頁
文件大?。?/td> 509K
代理商: MB3881PFF
MB3881
5
I
BLOCK DIAGRAM
General view
Drive
1-1
Drive
1-2
+
+
+
+
+
+
+
DTC1
Error
SCP
1.25 V
1.0 V
VB1
CTL-4
CS
CTL-2
CTL-3 30
DTC8
+
IN7
PWM
PWM
VCC(O)-1
VSS(O)-1
VDD(O)
OUT1-1
OUT1-2
FB2
IN2
IN3
IN4
FB5
IN5(C)
DTC5
IN5
VCC(O)-2
VSS(O)-2
IN6
OUT6
GND(O)-2
VCC
CTL-1
OUT7
CS CTL
Logic
CTL
1
,
3
,
4
29
Buff
Buff
×
0.8
SYNC
RT
CT
CSCP
VREF
GND
2.5 V
1.73 V
1.0 V
1.73 V
1.0 V
0.8 V
0.3 V
UVLO
SCP
Ref
Power
CTL
OSC
47
46
48
43
40
37
21
15
12
31
32
35
33
34
26
24
25
27
28
59
51
52
49
GND(O)-1
55
50
58
IN1
FB1
CH1
Drive
2-1
Drive
2-2
+
+
+
+
+
+
+
Error
SCP
1.25 V
1.0 V
VB2
PWM
PWM
CH2
A
B
C
Drive
3
+
+
+
+
+
+
Error
SCP
1.25 V
1.0 V
PWM
CH3
Drive
4
+
+
+
+
+
+
Error
SCP
1.25 V
1.0 V
PWM
PWM
+
+
CH4
Drive
5
+
+
+
Error
SCP
0.6 V
CH5
OUT2-1
53
OUT2-2
54
DTC2 45
OUT3
56
DTC3 42
FB3 41
DTC4 39
FB4 38
OUT4
57
OUT5
60
63
20
23
+
IN5 22
PWM
+
+
Drive
6
+
+
+
Error
SCP
0.6 V
CH6
PWM
+
+
Drive
7
+
+
+
+
+
+
Error
SCP
1.25 V
1.0 V
CH7
CH8
19
61
FB6 14
IN6(C) 17
+
IN6 16
DTC6 13
OVP 18
PWM
Drive
8
+
+
+
Error
SCP
62
OUT8
64
RB8
2
1
FB7 10
IN7 11
FB8 4
IN8 5
+
IN8 6
IN8(C) 7
+
IN8(C) 8
3
DTC7
20 k
80 k
9
CT1
CT2
CT
VB
2 V
36
44
H : ON (Power/CH1, 3, 4, 8)
L : OFF (Standby mode)
(64 pin)
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