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MC7808AECT

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P26
MC78XXE/LM78XXE/MC78XXAE
19
Typical Applications
Figure 5. DC Parameters
Figure 6. Load Regulation
Figure 7. Ripple Rejection
Figure 8. Fixed Output Regulator
MC78XXE/LM78XXE
Output
Input
1
3
2
C
O
0.1uF
C
I
0.33uF
MC78XXE/LM78XXE
1
2
3
Output
Input
0.33uF
R
L
270pF
100Ω
V
O
OV
VO
30uS
2N6121
OR EQ.
MC78XXE/LM78XXE
5.1Ω
Output
Input
0.33uF
1
2
3
R
L
470uF
+
120Hz
MC78XXE/LM78XXE
Output
Input
1
3
2
C
O
0.1uF
C
I
0.33uF
MC78XXE/LM78XXE/MC78XXAE
20
Figure 9. Constant Current Regulator
Notes:
(1) To specify an output voltage. substitute voltage value for "XX." A common ground is required between the input and the
Output voltage. The input voltage must remain typically 2.0V above the output voltage even during the low point on the input
ripple voltage.
(2) C
I
is required if regulator is located an appreciable distance from power Supply filter.
(3) C
O
improves stability and transient response.
Figure 10. Circuit for Increasing Output Voltage
Figure 11. Adjustable Output Regulator (7 to 30V)
I
O
=
V
XX
R
1
+ I
Q
1
2
3
0.1uF
R1
VXX
Output
Input
0.33uF
I
Q
C
O
R
L
I
O
MC78XXE/LM78XXE
MC78XXE/LM78XXE
Output
Input
R1
R2
1
2
3
0.33uF
Cl
Co
0.1uF
VXX
I
Q
I
RI
≥ 5IQ
VO = V
XX
(1+R
2
/R
1
)+I
Q
R
2
MC7805E
LM7805E
I
RI
≥ 5IQ
VO = V
XX
(1+R
2
/R
1
)+I
Q
R
2
LM741
Output
Input
2
3
6
4
1
2
3
Cl
0.33uF
Co
0.1uF
10kΩ
_
+
MC78XXE/LM78XXE/MC78XXAE
21
Figure 12. High Current Voltage Regulator
Figure 13. High Output Current with Short Circuit Protection
Figure 14. Tracking Voltage Regulator
I
O
= I
REG
+B
Q1
(I
REG
- V
BEO1
/R
1
)
R
1
=
V
BEQ1
I
REG
- I
Q1
B
Q1
Output
Input
MC78XXE/LM78XXE
I
Q1
1
2
3
IREG
0.33uF
0.1uF
I
O
R1
3Ω
Q1 BD536
MC78XXE/LM78XXE
Output
Input
0.33uF
0.1uF
3Ω
R1
Q2
R
SC
Q1
3
2
Q1 = TIP42
Q2 = TIP42
R
SC
=
I
SC
V
BEQ2
MC78XXE/LM78XXE
31
2
7
6
2
3
4
LM741
V
O
-V
O
-V
IN
V
I
COMMON
COMMON
0.33uF
0.1uF
4.7KΩ
4.7KΩ
TIP42
_
+
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P26

MC7808AECT

Mfr. #:
Buy MC7808AECT
Manufacturer:
ON Semiconductor / Fairchild
Description:
Linear Voltage Regulators 3-Terminal 1A Positive
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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