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参数资料
| 型号： | ML7820A-FBE |
| 元件分类： | 固定正电压单路输出标准稳压器 |
| 英文描述： | 20 V FIXED POSITIVE REGULATOR, PSFM3 |
| 封装： | ROHS COMPLIANT, TO-220, 3 PIN |
| 文件页数： | 10/11页 |
| 文件大小： | 459K |
| 代理商： | ML7820A-FBE |
1. Application Circuit
Positive/Negative Voltage Supply
Note :
2. Note in Application Circuit
( 1 )
( 2 )
* In case of negative voltage regulator, reverse the SBD and capacitor direction.
In the following explain only the positive regulator unless otherwise specified. However they can apply to the
negative voltage regulator by easy change.
In the above positive and negative
power supply application, D1 and D2
should be connected. If D1 and D2
are not connected, either of positive
or negative power supply circuit may
not turns on.
If the higher voltage (above the rated value) or lower voltage (GND-0.5V) is supplied to the input
terminals, the IC may be destroyed. To avoid such a case, a zener diode or other parts of the surge
supressor should be connected as shown below.
If the higher voltage than the input terminal is supplied to the output terminal, the IC may be
destroyed. To avoid input terminal short to the GND or the stored voltage in the capacitor back to the
output terminal, by the large value capacitor connecting to the output terminal application, the SBD
should be required as shown below;
COM
-Vin
+Vin
0.33uF
OUT
COM
IN
79 series
OUT
GND
IN
78 series
-Vo
+Vo
D2
D1
0.1uF
Vin
Vo
IN
1
GN
D
2
OUT
3
Capacitor
+
Ze ner Diode
R
Vo
Vin
Capacitor
+
IN
1
GN
D
2
OUT
3
L
Diode
Vin
Vo
Capacitor
+
IN
1
GN
D
2
OUT
3
DIODE
Page 8 of 11
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