MB39A114 Datasheet, PDF (5/54 Pages) Fuji Electric – DC/DC Converter IC for Charging Li-ion Battery

MB39A114
s BLOCK DIAGRAM
−INE1 8
OUTC1 10
+INC1 13
−INC1 12
<Current Amp 1>
+
−ײ⁰
+INE1 9
VREF
<Error Amp 1>
−
++
−INE2 4
OUTC2 2
+INC2 24
−INC2 1
<Current Amp 2>
+
−ײ⁰
+INE2 3
FB12 7
<Error Amp 2>
−
++
−
+
2.6 V
<CV Comp.>
5 CVM
<OV Comp.>
+
−
1.4 V
18 OVP
−
0.2 V ₊ ^{<UV Comp.>}
−
−INC2
(VO)
<PWM Comp.>
+
+
−
21 VCC
<OUT>
Drive
20 OUT
R1
−INE3 16
R2
FB3 15
SEL 11
H : 4Cell
L : 3Cell
<SOFT>
VREF
10 µA
CS 22
VREF
<Error Amp 3>
−
++
4.2 V/3.15 V
−2.5 V
−1.5 V
19 VH
VCC − 6 V
VH
Bias
Voltage
UVLO
VREF
UVLO
4.2 V
bias
VCC
<OSC>
500 kHz
<REF> <CTL>
CT
45 pF
VREF
5.0 V
17
6
23
RT
VREF
GND
14 CTL
5