MB3886 데이터 시트보기 (PDF) - Fujitsu
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MB3886 Datasheet PDF : 30 Pages
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MB3886
s PIN DESCRIPTION
Pin No. Pin name I/O
Description
1
PSIG1 O CH1 protection status output terminal
CH1 control terminal
2
CTL1 I “H” level : CH1 ON state
“L” level : CH1 OFF state and protection status reset
3
ILIM1 I CH1 overcurrent detection resistor connection terminal
4
CT Triangular waveform oscillation frequency setting capacitor connection terminal
5
RT Triangular waveform oscillation frequency setting resistor connection terminal
6
SGND Ground terminal
7
CS1 CH1 soft-start capacitor connection terminal
8
−INE1 I CH1 error amp. inverting input terminal
9
FB1 O CH1 error amp. output terminal
10 +INC1 I CH1 overvoltage comparator noninverting input terminal
11 OUT1-1 O CH1 totem-pole output terminal (External main-side FET gate drive)
12
VS1 CH1 external main-side FET source connection terminal
13
CB1
CH1 boot capacitor connection terminal
Connect a capacitor between the CB1 and VS1 terminals.
14
OUT2-1
O
CH1 totem-pole output terminal (External synchronous-rectification-side FET gate
drive)
15 PGND Ground terminal
16
VB
O Output circuit bias output terminal
17
OUT2-2
O
CH2 totem-pole output terminal (External synchronous-rectification-side FET gate
drive)
18
CB2
CH2 boot capacitor connection terminal
Connect a capacitor between the CB2 and VS2 terminals.
19
VS2 CH2 external main-side FET source connection terminal
20 OUT1-2 O CH2 totem-pole output terminal (External main-side FET gate drive)
21 +INC2 CH2 overvoltage comparator noninverting input terminal
22
FB2 O CH2 error amp. output terminal
23 −INE2 I CH2 error amp. inverting input terminal
24
CS2 CH2 soft-start capacitor connection terminal
25 CSCP Timer-latch short-circuit protection capacitor connection terminal
26
VCC Reference voltage, control circuit power supply terminal
27 VREF O Reference voltage output terminal
28
ILIM2 I CH2 overcurrent detection resistor connection terminal
CH2 control terminal
29
CTL2 I “H” level : CH2 ON state
“L” level : CH2 OFF state and protection status reset
30 PSIG2 O CH2 protection status output terminal
3
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