MB39A114 Datasheet, PDF (4/54 Pages) Fuji Electric – DC/DC Converter IC for Charging Li-ion Battery

MB39A114
s PIN DESCRIPTION
Pin No.
1
2
3
4
Symbol
−INC2
OUTC2
+INE2
−INE2
5
CVM
6
VREF
7
FB12
8
−INE1
9
+INE1
10
OUTC1
11
SEL
12
−INC1
13
+INC1
14
CTL
15
FB3
16
−INE3
17
RT
18
OVP
19
VH
20
OUT
21
VCC
22
CS
23
GND
24
+INC2
I/O
Description
I
Current detection amplifier (Current Amp2) inverted input terminal
O
Current detection amplifier (Current Amp2) output terminal
I
Error amplifier (Error Amp2) non-inverted input terminal
I
Error amplifier (Error Amp2) inverted input terminal
O
Open drain type output terminal of constant voltage control state detec-
tion comparator (CV Comp.)
O
Reference voltage output terminal
O
Error amplifier (Error Amp1, Error Amp2) output terminal
I
Error amplifier (Error Amp1) inverted input terminal
I
Error amplifier (Error Amp1) non-inverted input terminal
O
Current detection amplifier (Current Amp1) output terminal
Charge voltage setting switch terminal (3 cell or 4 cell)
O
“H” level in SEL terminal : charge voltage setting 16.8 V (4 Cell)
“L” level in SEL terminal : charge voltage setting 12.6 V (3 Cell)
I
Current detection amplifier (Current Amp1) inverted input terminal
I
Current detection amplifier (Current Amp1) non-inverted input terminal
I
Power-supply control terminal
Setting the CTL terminal at “L” level places the IC in the standby mode.
O
Error amplifier (Error Amp3) output terminal
I
Error amplifier (Error Amp3) inverted input terminal

Triangular wave oscillation frequency setting resistor connection
terminal
O
Open drain type output terminal overvoltage detection comparator (OV
Comp.)
O
Power supply terminal for FET drive circuit (VH = VCC − 6 V)
O
External FET gate drive terminal

Power supply terminal for reference power supply, control circuit and
output circuit
 Soft-start capacitor connection terminal
 Ground terminal
I
Current detection amplifier (Current Amp2) non-inverted input terminal
4