KA7808E Fairchild Semiconductor, KA7808E Datasheet - Page 24

• Manufacturer Part Number: KA7808E
• Description: The KA78XXE/KA78XXAE series of three-terminal positive regulator are available in the TO-220/D-PAK package and with several fixed output voltages, making them useful in a wide range of applications
• Manufacturer: Fairchild Semiconductor

KA78XXE/KA78XXAE Rev. 1.0.3
I
O
= I
REG
+ B
Input
I
V
Q1
RI
O
≥ 5 I
= V
Input
(I
V
REG
I
XX
Q
Figure 15. High Output Current with Short Circuit Protection
C
(1 + R
–V
I
Input
BEQ1
V
2
Figure 13. Adjustable Output Regulator (7 to 30V)
I
/ R
0.33µF
/R
1
) + I
Figure 14. High Current Voltage Regulator
1
)
Q
R
3Ω
1
R1
2
3Ω
R1
Q1 = TIP42
Q2 = TIP42
Q2
KA7805E
IREG
2
0.33µF
RSC =
1
24
3
V
6
BEQ2
I
SC
KA78XXE
KA741
4
IQ1
Q1
2
-
+
0.33µF
3
2
1
KA78XXE
3
10KΩ
2
0.1µF
Output
C
0.1µF
0.1µF
3
I
O
O
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Output
Vo
Output
Vo