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Description
MM1548 View Datasheet(PDF) - Mitsumi
Part Name
Description
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MM1548
Secondary Control for Energy-Saving AC Adaptor
Mitsumi
MM1548 Datasheet PDF : 12 Pages
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MITSUMI
Secondary Control for Energy-Saving AC Adaptor MM1548
Timing Chart
Load / Energy-saving detection
Load current decrease
Load current decrease
5 Load current
Load detection current
(200mV/R
L
S)
Energy saving current
(115mV/R
L
S)
0mA
1 V
CC
PIN
2 OUT PIN
5.1
V
4.9V
115mV
200mV
3 PO1 PIN
0V
Open
Low(Load 5k
Ω
)
V
CC
OUT
4 CNT PIN
Open
Control
Load current increase
Load current increase
5 Load current
Load detection current
(200mV/R
L
S)
Energy saving current
(115mV/R
L
S)
0mA
1 V
CC
PIN
2 OUT PIN
5.1
V
4.9V
200mV
3
PO1 PIN
0V
Open
Low(Load 5k
Ω
)
V
CC
OUT
4 CNT PIN
Open
AC input
Rectifying
circuit
Delay circuit
Switching
interruption
control
Switching
circuit
Control
Smoothing
circuit
1
2
RLS
5
Output
+
4
V
CC
CNT OUT
MM1548
PO1 GND CS
RCS
–
3
signal detection
circuit
Photocoupler
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