MB39A125 Datasheet, PDF (12/64 Pages) Fujitsu Component Limited. – DC/DC Converter IC for Charging Li-ion Battery

MB39A125/126
• MB39A126
−INE1 8
OUTC1 10
13
+INC1
−INC1 ₁₂
<Current Amp1>
+
×20
−
+INE1 9
−INE2 4
OUTC2 ²
+INC2 ²⁴
−INC2 ₁
<Current Amp2>
+
×20
−
+INE2 ³
FB123 15
R1
−INE3 16
R2
ACIN
7
<AC Comp.>
+
VREF
−
1.4 V
ACOK
5
XACOK
18
<Error Amp1>
−
+
<Error Amp2>
−
+
<Error Amp3>
−
+
4.2 V/3.15 V
0.2 V <UV Comp.>
+
−
−INC1
(Vo)
<PWM Comp.>
+
−
<OUT>
Drive
21 VCC
20 OUT
−2.5 V
−1.5 V
(VCC − 6 V) ^{19 VH}
VH
Bias
Voltage
<UVLO>
VREF
UVLO
SEL 11
Hi : 4 Cells
Lo : 3 Cells
VREF
< SOFT>
10 µA
CS 22
Slope
Control
<OSC>
500 kHz Max
4.2 V
Bias
<REF>
CT
(45 pF)
VREF
5.0 V
17
6
RT
VREF
VCC
<CTL>
23
GND
14 _CTL
12