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Vishay - (MC78xxCT) 3-Terminal Fixed Positive Voltage Regulators

Numéro de référence MC7818CT
Description (MC78xxCT) 3-Terminal Fixed Positive Voltage Regulators
Fabricant Vishay 
Logo Vishay 





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MC7818CT fiche technique
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New Product
MC78xxCT Series
Vishay Semiconductor
3-Terminal Fixed Positive Voltage Regulators
MC78xxCT
TO-220AB
3
2
1
Pin Definition
1. Input
2. Ground
3. Output
(Heatsink/ tab
connected to pin 2)
Input
Cin
0.33µF
Standard Application
MC78xx
Output
Co
0.1µF
Notes:
A common ground is required between the input and the output voltages.
The input voltage must remain typically 2.0V above the output voltage
even during the low point on the input ripple voltage.
xx = these two digits of the part number indicate output 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.
Description
These voltage regulators are monolithic integrated circuits
designed as fixed-voltage regulators for a wide variety of
applications including local, on-card regulation. These
regulators employ internal current limiting, thermal shut-
down, and safe-area compensation. With adequate
heatsinking the MC78xxCT can deliver output currents in
excess of 1.5 ampere.
Although designed primarily as a fixed voltage regulator,
these devices can be used with external components to
obtain adjustable voltages with currents.
Features
• Output current in excess of 1.0 ampere
• No external components required
• Internal thermal overload protection
• Internal short-circuit current limiting
• Output transistor safe-area compensation
• Output voltage offered in 2% tolerance
Mechanical Data
Case: TO-220 Package
Case outline is on the back page.
Internal Block Diagram
Input
1
Starting
Circuit
Current
Generator
Series
Pass
Element
SOA
Protection
Reference
Voltage
Error
Amplifier
Thermal
Protection
Output
3
GND
2
Document Number 74813
ww2w9-.NDoavta-0S1heet4U.com
www.DataSheet4U.com
www.vishay.com
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