MB3878 Fujitsu Media Devices, MB3878 Datasheet - Page 4

• Manufacturer Part Number: MB3878
• Description: DC/DC Converter IC for Charging
• Manufacturer: Fujitsu Media Devices

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