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MB3878 データシートの表示(PDF) - Fujitsu

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MB3878 Datasheet PDF : 24 Pages
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MB3878
s BLOCK DIAGRAM
INE1 8
OUTC1 10 <Current Amp.1>
+INC1 13
+
× 25
INC1 12
+INE1 9
FB1 7
INE2 4
OUTC2 2 <Current Amp.2>
+INC2 24
+
× 25
INC2 1
+INE2 3
<Error
Amp.1>
VREF
+
<Error
Amp.2> VREF
+
<PWM Comp.>
<OUT>
++
+−
Drive
21 VCC (O)
20 OUT
VCC
Bias
19 VH
Voltage (VCC 5 V)
<VH>
FB2 5
INE3 16
OUTD 11
FB3 15
<SOFT>
VREF
1 µA
CS 22
<Error
Amp.3>
VREF
+
+
4.2 V
<OSC>
(45 pF)
17
RT
2.5 V
1.5 V
<UVLO> VCC
(VCC UVLO)215 k
35 k
0.91 V
(0.77 V)
VREF
UVLO
VCC
bias
<REF> <CTL>
VREF
6 5.0 V 23
VREF GND
18 VCC
14 CTL
4

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