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MB3875PFV データシートの表示(PDF) - Fujitsu

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MB3875PFV Datasheet PDF : 26 Pages
First Prev 11 12 13 14 15 16 17 18 19 20 Next Last
MB3875/3877
s APPLICATION EXAMPLE
R4
2
R5
330 k
R6
68 k
INE1
R10
11
22 kOUTC1
C10 3900 pF 10
+INC1
<Current Amp.1>
13
+
R11
INC1
12
× 25
30 k150 k
R9
+INE1 8
FB1
9
INE2 6
R8 100 k
C8
3900 pF
150 k
R7
R12
22 k
R14
1.3 k
OUTC2 4
+INC2
<Current Amp.2>
A
24
+
INC2
B
1
× 25
+INE2
7
R16
200 k
Q2
30 k
R13
110
R15
FB2
3
SW1
IN3
2
<Error
Amp.1>
VREF
+
<Error
Amp.2>
VREF
+
<PWM
Comp.>
+++−
<OUT>
Drive
VCC (O)
21
C5
0.1 µF
OUT
20
C1
22 µF
AB
Q1
BATT
4
L1
RS
27 µH
0.033
VCC
C2 C3
100 µF 100 µF
Bias voltage
VH
19
block
<VH> (VCC 5 V)
D1
VIN
3
INE3
1
<Error
Amp.3>
VREF
16
C6
3900 pF
50 k
+
+
<UVLO>
VCC
(VCC UVLO) 215 k
35 k
200 k
R3
FB3
15
<SOFT>
VREF
VREF
(4.2 V)
0.91 V
(0.77 V)
VREF
ULVO
1 µA
CS
2200 pF
CS
22
2.5 V
1.5 V
<OSC>
VCC
bias
<REF> <CTL>
VCC
18
CTL
14
C7
0.1 µF
(45 pF)
17
5
RT VREF
RT 47 k
23
GND
C9
0.1 µF
1 : MB3875 100 k
MB3877 150 k
2 : Vin = 16 V 0
Vin = 19 V 82 k
3 : MB3875 16 V/19 V
MB3877 19 V
4 : MB3875 12.6 V
MB3877 16.8 V
18

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