MB3888 Fuji Electric, MB3888 Datasheet - Page 4

• Manufacturer Part Number: MB3888
• Description: DC/DC Converter IC for Charging Li-ion Battery
• Manufacturer: Fuji Electric

4
MB3888
PIN DESCRIPTION
Pin No.
10
11
12
13
14
15
16
17
18
19
20
1
2
3
4
5
6
7
8
9
VCC (O)
Symbol
OUTD
OUTC
VREF
GND
VCC
DTC
OUT
CTL
FB2
FB1
INE2
INE2
INE1
INE1
VH
CS
RT
INC
INC
I/O
O
O
O
O
O
O
O
I
I
I
I
I
I
I
I
Ground terminal.
Triangular-wave oscillation frequency setting resistor connection
terminal.
Power supply control terminal.
Setting the CTL terminal at “L” level places the IC in the standby
mode.
Reference voltage output terminal.
PWM comparator block (PWM) input terminal.
Compares the lowest voltage among terminals FB1, FB2, and DTC,
with triangular wave and controls output.
Error amplifier (Error Amp2) output terminal.
Error amplifier (Error Amp2) inverted input terminal.
Error amplifier (Error Amp2) non-inverted input terminal.
With IC in standby mode, this terminal is set to “Hi-Z” to prevent loss
of current through output voltage setting resistance. Set CTL terminal
to “H” level and OUTD terminal to “L” level.
Current detection amplifier (Current Amp) input terminal.
Current detection amplifier (Current Amp) input terminal.
Current detection amplifier (Current Amp) output terminal.
Error amplifier (Error Amp1) non-inverted input terminal.
Error amplifier (Error Amp1) inverted input terminal.
Error amplifier (Error Amp1) output terminal.
Power supply terminal for reference power supply and control circuit.
Power supply terminal for FET drive circuit (VH
External FET gate drive terminal.
Output circuit power supply terminal.
Soft-start capacitor connection terminal.
Descriptions
V
CC
6 V) .