MM1548 Ver la hoja de datos (PDF) - Mitsumi
Número de pieza
componentes Descripción
Fabricante
MM1548 Datasheet PDF : 12 Pages
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MITSUMI
Secondary Control for Energy-Saving AC Adaptor MM1548
Timing Chart
Constant voltage control
Normal mode [Io>115mV / RLS]
5.1V
12
4.9V
VCC, OUT PIN
(secondary side output)
0V
VCC
OUT
3
PO1 current
(load det. + constant
voltage control output)
0mA
ON
4
Primary side switching
OFF
Normal mode
Constant current control
Normal control [VCC>2.0V]
12
VCC, OUT PIN
(secondary side output) 2V
0V
3
PO1 current
(load det. + constant
voltage control output)
0mA
200mV
OUT
4
ON
Primary side switching
OFF
5
114.4mV
CS terminal
(constant current
control input)
0mV
AC input
4
Rectifying
circuit
Delay circuit
Switching
interruption
control
Switching
circuit
Energy saving mode [Io<115mV / RLS]
5.1V
4.9V
3.5V
VCC
OUT
0V
0mA
ON
OFF
Energy saving mode Energy saving mode
Normal mode
Normal mode
Drop control [VCC<2.0V]
VCC
2V
over 0.6V
0V
OUT
0mA
ON
OFF
34mV
0mV
1
2
RLS
output
+
Smoothing
circuit
VCC CNT OUT
MM1548
PO1 GND CS
RCS
–
5
3
Signal detection
circuit
Photocoupler
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