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MB3887
PIN DESCRIPTION
Pin No.
Symbol
1
INC2
2
OUTC2
3
INE2
4
INE2
5
FB2
6
VREF
7
FB1
8
INE1
9
INE1
10
OUTC1
11
OUTD
12
INC1
13
INC1
14
CTL
15
FB3
16
INE3
17
RT
18
VCC
19
VH
20
OUT
21
VCC (O)
22
CS
23
GND
24
INC2
4
I/O
I
Current detection amplifier (Current Amp2) 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
Error amplifier (Error Amp2) output terminal.
O
Reference voltage output terminal.
O
Error amplifier (Error Amp1) 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.
With IC in standby mode, this terminal is set to "Hi-Z" to prevent loss
O
of current through output voltage setting resistance.
Set CTL terminal to "H" level to output "L" level.
I
Current detection amplifier (Current Amp1) input terminal.
I
Current detection amplifier (Current Amp1) input terminal.
Power supply control terminal.
I
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.
Power supply terminal for reference power supply and control circuit.
O
Power supply terminal for FET drive circuit (VH
O
External FET gate drive terminal.
Output circuit power supply terminal.
Soft-start capacitor connection terminal.
Ground terminal.
I
Current detection amplifier (Current Amp2) input terminal.
Descriptions
VCC
6 V) .
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