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LM7805ACT 数据表(PDF) 21 Page - ON Semiconductor

部件名 LM7805ACT
功能描述  3-Terminal 1 A Positive Voltage Regulator
PDF  26 Pages
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制造商  ONSEMI [ON Semiconductor]
网页  http://www.onsemi.com
标志 ONSEMI - ON Semiconductor

LM7805ACT 数据表(HTML) 21 Page - ON Semiconductor

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© 2006 Fairchild Semiconductor Corporation
www.fairchildsemi.com
LM78XX / LM78XXA Rev. 1.3.1
20
Typical Applications (Continued)
Figure 12. Adjustable Output Regulator (7 V to 30 V)
Figure 13. High-Current Voltage Regulator
Figure 14. High Output Current with Short-Circuit Protection
LM741
-
+
2
3
6
4
2
3
1
0.33
μF
CI
Input
Output
0.1
μF
CO
LM7805
10kΩ
IRI ≥ 5 IQ
VO = VXX(1+R2/R1)+IQR2
3
2
1
LM78XX
Output
Input
R1
3
Ω
0.33μF
IREG
0.1μF
IO
IQ1
IO = IREG + BQ1 (IREG–VBEQ1/R1)
Q1 BD536
R1 =
VBEQ1
IREG–IQ1 BQ1
/
LM78XX
Output
0.1μF
0.33μF
R1
3
Ω
3
2
1
Q1
Input
Q2
Q1 = TIP42
Q2 = TIP42
RSC =
ISC
VBEQ2
RSC



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