MB3879
s
框图
VCC
1
-INE
OUTC1
+INC1
−INC1
+INE1
44
45
48
47
43
46
42
<<Differencial - Control>>
<MODE
Comp.1>
+
×25
−
<CURRENT
Amp1>
+
<VDD>
13
<Error Amp1>
−
−
<MODE
Comp.2>
OUT-EA1
+
FB
电压
选择器
+
FB1
FB2
−INE2
+INE2
DTC
−INE3
OUTC2
+INC2
−
<MODE
Comp.3>
12
OUT-EA2
<Error Amp2>
41
40
39
18
17
15
14
19
16
32
33
35
36
31
34
<SOFT1>
VB
<<Current - Contorl>>
−
+
+
<<Dynamically - Contorl>>
−
<MODE
Comp.4>
11
OUT -EC
FB
电压
选择器
IN1
+INE3
FB3
−INE4
OUTC3
+INC3
IN2
+INE4
FB4
+
Amp2>
×25
−
<CURRENT
<Error Amp3>
+
−
+
+
−
10
OUT -EV
+
Amp3>
×25
−
<CURRENT
<Error Amp4>
−
+
+
+
+
+
−
<PWM
Comp>
25
<OUT>
DRIVE
24
VCCO
OUT
VCC
26
BIAS
(V
CC
−
6 V)
电压
<VH>
27
VH
GNDO
CS1
23
FB
电压
选择器
R1
22.4
kΩ
R1
<<Voltage - Contorl>>
22.4 kΩ
<Error Amp5>
<UVLO>
VCC
UVLO
−INE5
29
−
+
+
R2
R2
<Error Amp6>
FB5
−INE6
30
VB
UVLO
21
2.8 kΩ 2.8 kΩ
−
+
+
3V
2V
R3
8.4
kΩ
R3
8.4
kΩ
FB6
20
<SOFT2>
VB
CS2
22
(4.2 V)
VDD
8
2
3
4
5
6
<REF>
<Decoder>
<Larch>
D0
D1
D2
D3
(4.1 V)
<OSC>
BIAS
(5 V)
37
28
9
<VB>
<VR>
38
<CTL>
7
CTL
VSS
CT测试
VB
GND
6
FUJITSU [ FUJITSU COMPONENT LIMITED. ]
