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参数资料
| 型号： | APL78L05-DC-TRL |
| 厂商： | Anpec Electronics Corporation |
| 元件分类： | 基准电压源/电流源 |
| 英文描述： | 5.0 AMP POSITIVE VOLTAGE REGULATOR |
| 中文描述： | 5.0放大器正电压稳压器 |
| 文件页数： | 7/14页 |
| 文件大小： | 144K |
| 代理商： | APL78L05-DC-TRL |
Copyright
ANPEC Electronics Corp.
Rev. A.4 - Oct., 2003
APL78L05/ 12
www.anpec.com.tw
7
Typical Characteristics
Input
Constant
Current to
Grounded
Load
R
APL78L05
l
O
0.33
μ
F
The APL78L05/12 Series of fixed voltage regulators
are designed with Thermal Overload Protection that
shuts down the circuit when subjected to an exces-
sive power overload condition. Internal Short Circuit
Protection limits the maximum current the circuit will
pass.
In many low current applications, compensation ca-
pacitors are not required. However, it is recom-
mended that the regulator input be bypassed with a
capacitor if the regulator is connected to the power
supply filter with long wire lengths, or if the output
load capacitance is large. The input bypass capaci-
tor should be selected to provide good high-frequency
characteristics to insure stable operation under all
load conditions. A 0.33
μ
F or larger tantalum, mylar,
or other capacitor having low internal impedance at
high frequencies should be chosen. The bypass ca-
pacitor should be mounted with the shortest possible
leads directly across the regulators input terminals.
Good construction techniques should be used to mini-
mize ground loops and lead resistance drops since
the regulator has no external sense lead. Bypassing
the output is also recommended.
Figure 1. Current Regulator
MC1741
0.33
μ
F
+20V
0.33
μ
F
20V
MPSU55
6.5
MPSA70
10K
10K
+V
O
-V
O
3
2
4
6
7
APL78L15
The APL78L00 regulators can also be used as a cur-
rent source when connected as above. In order to
minimize dissipation the APL78L05 is chosen in this
application. Resistor R determines the current as
follows :
I
O
= + I
B
I
B
=3.8mA over line and load changes
For example, a 100mA current source would require
R to be a 50
, 1/2W resistor and the output voltage
compliance would be the input voltage less 7V.
Figure 2. ±15V Tracking Voltage Regulator
Figure 3. Positive and Negative Regulator
+V
I
0.1
μ
F
APL78LXX
0.33
μ
F
APL79LXX
0.33
μ
F
0.1
μ
F
+V
O
-V
O
-V
I
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| APL78L05-DC-TU | 制造商:ANPEC 制造商全称:Anpec Electronics Coropration 功能描述:Three-Terminal Low Current Positive Voltage Regulator |
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| APL78L05-EC-PB | 制造商:ANPEC 制造商全称:Anpec Electronics Coropration 功能描述:Three-Terminal Low Current Positive Voltage Regulator |
| APL78L05EC-PBG | 制造商:ANPEC 制造商全称:Anpec Electronics Coropration 功能描述:Three-Terminal Low Current Positive Voltage Regulator |
| APL78L05-EC-PBL | 制造商:ANPEC 制造商全称:Anpec Electronics Coropration 功能描述:Three-Terminal Low Current Positive Voltage Regulator |
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