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PDF NCP7800 Data sheet ( Hoja de datos )
| Número de pieza | NCP7800 | |
| Descripción | 1.0 A Positive Voltage Regulators | |
| Fabricantes | ON Semiconductor | |
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NCP7800
1.0 A Positive Voltage
Regulators
The NCP7800 series consists of 3 pin, fixed output, positive linear
voltage regulators, suitable for a wide variety of applications. These
regulators are extremely rugged, incorporating internal current
limiting, thermal shutdown and safe-area compensation. With
adequate heat sinking they can deliver output currents in excess of
1.0 A. Designed as direct replacements for the popular MC7800
family, these products offer enhanced ESD protection.
Features
• Output Current in Excess of 1.0 A
• No External Components Required
• Internal Thermal Overload Protection
• Internal Short Circuit Current Limiting
• Output Transistor Safe−Area Compensation
• Output Voltage Offered in 4% Tolerance
• Available in Standard 3−Lead Transistor Packages
• For Tighter Tolerances and Extended Operating Range Refer to MC7800
• Enhanced ESD Tolerance: HBM Exceeds 4 kV and MM Exceeds 400 V
• These are Pb−Free Devices
Input
Cin*
0.33 mF
NCP78XX
Output
CO**
A common ground is required between the input and
the output voltages. The input voltage must remain
typically 2.0 V above the output voltage even during the
low point on the input ripple voltage.
XX These two digits of the type number indicate
nominal voltage.
* Cin is required if regulator is located an appreciable
distance from power supply filter.
** CO is not needed for stability; however,
it does improve transient response. Values of less
than 0.1 mF could cause instability.
Figure 1. Application Schematic
http://onsemi.com
123
TO−220−3
T SUFFIX
CASE 221AB
PIN CONNECTIONS
Pin 1. Input
2. Ground
3. Output
Heatsink surface
connected to Pin 2
78xxT
AWLYWWG
MARKING
DIAGRAM
xx = 05
A = Assembly Location
WL, L = Wafer Lot
Y = Year
WW = Work Week
G = Pb−Free Device
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 8 of this data sheet.
www.DataSheet4U.com
© Semiconductor Components Industries, LLC, 2009
October, 2009 − Rev. 0
1
Publication Order Number:
NCP7800/D
1 page  
NCP7800
TYPICAL CHARACTERISTICS
3.0 80
2.5
TJ = 0°C
2.0
TJ = 25°C
1.5
TJ = 125°C
1.0
0.5
0
0 5 10 15 20 25 30 35 40
Vin − Vout, INPUT/OUTPUT VOLTAGE DIFFERENTIAL (V)
Figure 3. Peak Output Current as a Function
of Input/Output Differential Voltage
5.10
5.05
Vin = 20 V
IO = 5.0 mA
5.00
70
60
50
Vin = 8.0 V to 18 V
IO = 500 mA
TA = 25°C
40
30
0.01 0.1 1 10
f, FREQUENCY (kHz)
Figure 4. Ripple Rejection as a Function of
Frequency
6
Vin = 10 V
5 VO = 5.0 V
IL = 20 mA
4
4.95 3
4.90 2
4.85
4.80
−60 −20 20 60 100 140
TJ, JUNCTION TEMPERATURE (°C)
Figure 5. Output Voltage as a Function of
Junction Temperature (NCP7805)
180
1
0
−50 −25 0 25 50 75 100 125
TJ, JUNCTION TEMPERATURE (°C)
Figure 6. Quiescent Current as a Function of
Temperature
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