Advertisement
Quick Links
LM78XX / LM78XXA
3-Terminal 1 A Positive Voltage Regulator
Features
• Output Current up to 1 A
• Output Voltages: 5, 6, 8, 9, 10, 12, 15, 18, 24 V
• Thermal Overload Protection
• Short-Circuit Protection
• Output Transistor Safe Operating Area Protection
Ordering Information
Product Number
LM7805CT
LM7806CT
LM7808CT
LM7809CT
LM7810CT
LM7812CT
LM7815CT
LM7818CT
LM7824CT
LM7805ACT
LM7809ACT
LM7810ACT
LM7812ACT
LM7815ACT
Note:
1. Above output voltage tolerance is available at 25°C.
© 2006 Fairchild Semiconductor Corporation
LM78XX / LM78XXA Rev. 1.3.1
(1)
Output Voltage
Tolerance
±4%
(Single Gauge)
±2%
Description
The LM78XX series of three-terminal positive regulators
is available in the TO-220 package and with several fixed
output voltages, making them useful in a wide range of
applications. Each type employs internal current limiting,
thermal shut-down, and safe operating area protection. If
adequate heat sinking is provided, they can deliver over
1 A output current. Although designed primarily as fixed-
voltage regulators, these devices can be used with exter-
nal components for adjustable voltages and currents.
1
Operating
Package
Temperature
-40°C to +125°C
TO-220
0°C to +125°C
September 2014
(Single Gauge)
TO-220
GND
1. Input
2. GND
3. Output
Packing Method
Rail
www.fairchildsemi.com
Advertisement
Related Manuals for Fairchild LM78 Series
Summary of Contents for Fairchild LM78 Series
- Page 1 -40°C to +125°C ±4% LM7812CT LM7815CT TO-220 Rail (Single Gauge) LM7818CT LM7824CT LM7805ACT LM7809ACT LM7810ACT 0°C to +125°C ±2% LM7812ACT LM7815ACT Note: 1. Above output voltage tolerance is available at 25°C. © 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com LM78XX / LM78XXA Rev. 1.3.1...
- Page 2 Figure 6. DC Parameters LM78XX Input Output 270pF 2N6121 0.33μF or EQ 30μS 100Ω Figure 7. Load Regulation 5.1Ω LM78XX Input Output 0.33μF 470μF 120Hz Figure 8. Ripple Rejection © 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com LM78XX / LM78XXA Rev. 1.3.1...
- Page 3 31. C improves stability and transient response. Output LM78XX Input 0.1μF 0.33μF ≥ 5 I (1 + R ) + I Figure 11. Circuit for Increasing Output Voltage © 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com LM78XX / LM78XXA Rev. 1.3.1...
- Page 4 –I –V BEQ1 Figure 13. High-Current Voltage Regulator Input Output LM78XX 3Ω 0.1μF 0.33μF Q1 = TIP42 Q2 = TIP42 BEQ2 Figure 14. High Output Current with Short-Circuit Protection © 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com LM78XX / LM78XXA Rev. 1.3.1...
-
Page 5: Typical Applications
TIP42 Figure 15. Tracking Voltage Regulator LM7815 +20V +15V 0.33μF 0.1μF 1N4001 2.2μF 1μF + 1N4001 MC7915 -20V -15V Figure 16. Split Power Supply (±15 V - 1 A) © 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com LM78XX / LM78XXA Rev. 1.3.1... - Page 6 Typical Applications (Continued) Output Input 0.1μF LM78XX Figure 17. Negative Output Voltage Circuit D45H11 Input Output 470Ω 4.7Ω LM78XX 0.33μF 10μF 0.5Ω 2000μF Figure 18. Switching Regulator © 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com LM78XX / LM78XXA Rev. 1.3.1...