Стабилизаторы MC78XXLM78XXMC78XXA
.pdf
MC78XX/LM78XX/MC78XXA
Typical Applications
Input |
MC78XX/LM78XX |
Output |
Figure 5. DC Parameters
Input |
MC78XX/LM78XX |
Output |
Figure 6. Load Regulation
|
|
MC78XX/LM78XX |
|
|
|
|
|
||
Input |
Output |
|
||
Figure 7. Ripple Rejection
Input |
|
|
Output |
|||
|
|
MC78XX/LM78XX |
|
|||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Figure 8. Fixed Output Regulator
21
MC78XX/LM78XX/MC78XXA
Input |
|
|
MC78XX/LM78XX |
|
Output |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
CI
Co
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)CI is required if regulator is located an appreciable distance from power Supply filter.
(3)CO improves stability and transient response.
Input |
Output |
MC78XX/LM78XX
CI
Co
IRI ≥ 5IQ
VO = VXX(1+R2/R1)+IQR2
Figure 10. Circuit for Increasing Output Voltage
Input MC7805 Output
|
|
LM7805 |
|
|
|
|
|
||
CI |
LM741 |
Co |
|
|
|
||||
|
|
|
||
|
|
|
|
|
IRI ≥ 5 IQ
VO = VXX(1+R2/R1)+IQR2
Figure 11. Adjustable Output Regulator (7 to 30V)
22
MC78XX/LM78XX/MC78XXA
Input
Output
MC78XX/LM78XX
Figure 12. High Current Voltage Regulator
Input
MC78XX/LM78XX
Output
Figure 13. High Output Current with Short Circuit Protection
MC78XX/LM78XX
LM741
Figure 14. Tracking Voltage Regulator
23
MC78XX/LM78XX/MC78XXA
MC7815
MC7915
Figure 15. Split Power Supply ( ±15V-1A)
Output
Input
MC78XX/LM78XX
Figure 16. Negative Output Voltage Circuit
Input |
Output |
||||
|
|
|
|
|
|
|
|
|
|
|
|
MC78XX/LM78XX
Figure 17. Switching Regulator
24
MC78XX/LM78XX/MC78XXA
Mechanical Dimensions
Package |
|
|
|
|
|
|
|
|
|
TO-220 |
|||
|
|
9.90 ± 0.20 |
|
|
|
|
|
1.30 ± 0.10 |
(8.70) |
|
2.80 ± 0.10 |
|
|
(1.70) |
ø3.60 |
± 0.10 |
|
|
||
|
|
|
|
|||
9.20 ± 0.20 |
(1.46) |
|
(3.00) (3.70) |
15.90 ± 0.20 |
18.95MAX. |
|
|
|
|
(45 |
|
|
|
|
|
|
° |
|
|
|
|
|
|
) |
|
|
|
13.08 ± 0.20 |
(1.00) |
|
|
|
|
10.08 ± 0.30 |
1.27 ± 0.10 |
|
1.52 ± |
0.10 |
|
||
|
|
|
|
|
||
|
|
|
0.80 ± |
0.10 |
|
|
2.54TYP |
|
|
|
|
|
|
|
2.54TYP |
||||||||
[2.54 ± 0.20] |
|
|
|
|
[2.54 ± 0.20] |
|||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
4.50 ± 0.20 |
1.30 –0.05+0.10 |
0.50 –0.05+0.10 |
|
|
2.40 ± 0.20 |
|
|
|
|
10.00 ± 0.20
25
MC78XX/LM78XX/MC78XXA
Mechancal Dimensions (Continued)
Package |
|
|
|
|
|
|
|
|
D-PAK |
||
|
6.60 ± 0.20 |
|
|
|
|
|
5.34 ± 0.30 |
|
|
± 0.20 |
|
|
|
|
|
|
|
(0.50) |
(4.34) |
(0.50) |
0.70 |
|
|
|
|
|
|
|
|
0.60 ± 0.20 |
|
2.70 ± 0.20 |
|
6.10 ± 0.20 |
9.50 ± 0.30 |
0.20 |
|
|
|||
0.80 ± |
|
|
|
|
|
MAX0.96 |
|
0.76 ± 0.10 |
|
||
2.30TYP |
|
2.30TYP |
|
|
|
[2.30± 0.20] |
|
[2.30± |
0.20] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
9.50 ± 0.30 |
|
6.10 ± 0.20 |
2.70 ± 0.20 |
|
|
|
|
|
|
|
|
|
|
|
|
||||
|
|
|
|
|
|
||||
|
|
|
|
|
|
||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2.30 ± 0.10 |
||
|
|
0.50 ± |
0.10 |
|
0.91 ± 0.10 |
|
MIN0.55 |
|
|
± 0.10 |
|
|
|
|
0.89 |
|
0.50 ± |
0.10 |
|
|
1.02 ± |
|
||
|
|
0.20 |
||
|
|
2.30 ± |
0.20 |
|
6.60 ± 0.20 |
|
|
|
|
(5.34) |
|
|
|
|
(5.04) |
(0.70) |
(0.90) |
(1.00) |
|
(1.50) |
|
|||
|
|
|||
(2XR0.25) |
|
(3.05) |
|
|
|
|
|
|
|
|
|
(0.10) |
|
|
|
0.76 ± 0.10 |
|
|
|
26
|
|
|
MC78XX/LM78XX/MC78XXA |
|
|
|
|
|
|
Ordering Information |
|
|
|
|
|
|
|
|
|
Product Number |
Output Voltage Tolerance |
Package |
Operating Temperature |
|
LM7805CT |
±4% |
TO-220 |
0 ~ + 125° C |
|
|
|
|
|
|
|
|
|
|
|
Product Number |
Output Voltage Tolerance |
Package |
Operating Temperature |
|
MC7805CT |
|
|
|
|
|
|
|
|
|
MC7806CT |
|
|
|
|
|
|
|
|
|
MC7808CT |
|
|
|
|
|
|
|
|
|
MC7809CT |
|
|
|
|
|
|
TO-220 |
|
|
MC7810CT |
|
|
|
|
|
|
|
|
|
MC7812CT |
|
|
|
|
|
|
|
|
|
MC7815CT |
|
|
|
|
|
±4% |
|
|
|
MC7818CT |
|
|
|
|
|
|
|
|
|
MC7824CT |
|
|
|
|
|
|
|
|
|
MC7805CDT |
|
|
|
|
|
|
|
|
|
MC7806CDT |
|
|
|
|
|
|
|
|
|
MC7808CDT |
|
D-PAK |
0 ~ + 125° C |
|
|
|
|
||
MC7809CDT |
|
|
||
|
|
|
|
|
|
|
|
|
|
MC7810CDT |
|
|
|
|
|
|
|
|
|
MC7812CDT |
|
|
|
|
|
|
|
|
|
MC7805ACT |
|
|
|
|
|
|
|
|
|
MC7806ACT |
|
|
|
|
|
|
|
|
|
MC7808ACT |
|
|
|
|
|
|
|
|
|
MC7809ACT |
|
|
|
|
|
±2% |
TO-220 |
|
|
MC7810ACT |
|
|
||
|
|
|
|
|
MC7812ACT |
|
|
|
|
|
|
|
|
|
MC7815ACT |
|
|
|
|
|
|
|
|
|
MC7818ACT |
|
|
|
|
|
|
|
|
|
MC7824ACT |
|
|
|
|
|
|
|
|
|
27
MC78XX/LM78XX/MC78XXA
DISCLAIMER
FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR
CORPORATION. As used herein:
1.Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user.
2.A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.
www.fairchildsemi.com
7/2/01 0.0m 001 Stock#DSxxxxxxxx2001 Fairchild Semiconductor Corporation