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参数资料
| 型号： | MM1548N |
| 厂商： | MITSUMI ELECTRIC CO LTD |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO6 |
| 封装： | SOT-26, 6 PIN |
| 文件页数： | 2/12页 |
| 文件大小： | 128K |
| 代理商： | MM1548N |
MITSUMI
Secondary Control for Energy-Saving AC Adaptor MM1548
5.1V
4.9V
VCC
OUT
0V
0mA
ON
OFF
5.1V
4.9V
3.5V
VCC
OUT
0V
0mA
ON
OFF
VCC, OUT PIN
(secondary side output)
1
PO1 current
(load det. + constant
voltage control output)
3
Primary side switching
4
2
Normal mode
Energy saving mode
Normal mode
Constant voltage control
Normal mode [Io>115mV / RLS]
Energy saving mode [Io<115mV / RLS]
2V
OUT
0V
0mA
ON
114.4mV
0mV
200mV
OFF
2V
OUT
VCC
0V
0mA
ON
0mV
34mV
over 0.6V
OFF
VCC, OUT PIN
(secondary side output)
1
PO1 current
(load det. + constant
voltage control output)
3
Primary side switching
4
CS terminal
(constant current
control input)
5
2
Constant current control
Normal control [VCC>2.0V]
Drop control [VCC<2.0V]
AC input
output
Delay circuit
Switching
interruption
control
Switching
circuit
Smoothing
circuit
MM1548
+
–
Signal detection
circuit
Photocoupler
RLS
VCC CNT OUT
PO1 GND
CS
RCS
4
1
2
3
5
Rectifying
circuit
Timing Chart
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