LM7805CK National Semiconductor, LM7805CK Datasheet

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LM7805CK

Manufacturer Part Number
LM7805CK
Description
Series Voltage Regulators
Manufacturer
National Semiconductor
Datasheets
© 2000 National Semiconductor Corporation
LM78XX
Series Voltage Regulators
General Description
The LM78XX series of three terminal regulators is available
with several fixed output voltages making them useful in a
wide range of applications. One of these is local on card
regulation, eliminating the distribution problems associated
with single point regulation. The voltages available allow
these regulators to be used in logic systems, instrumenta-
tion, HiFi, and other solid state electronic equipment. Al-
though designed primarily as fixed voltage regulators these
devices can be used with external components to obtain ad-
justable voltages and currents.
The LM78XX series is available in an aluminum TO-3 pack-
age which will allow over 1.0A load current if adequate heat
sinking is provided. Current limiting is included to limit the
peak output current to a safe value. Safe area protection for
the output transistor is provided to limit internal power dissi-
pation. If internal power dissipation becomes too high for the
heat sinking provided, the thermal shutdown circuit takes
over preventing the IC from overheating.
Considerable effort was expanded to make the LM78XX se-
ries of regulators easy to use and minimize the number of
external components. It is not necessary to bypass the out-
Connection Diagrams
See NS Package Number KC02A
Order Number LM7805CK,
LM7812CK or LM7815CK
Metal Can Package
Bottom View
Aluminum
TO-3 (K)
DS007746-2
DS007746
put, although this does improve transient response. Input by-
passing is needed only if the regulator is located far from the
filter capacitor of the power supply.
For output voltage other than 5V, 12V and 15V the LM117
series provides an output voltage range from 1.2V to 57V.
Features
n Output current in excess of 1A
n Internal thermal overload protection
n No external components required
n Output transistor safe area protection
n Internal short circuit current limit
n Available in the aluminum TO-3 package
Voltage Range
LM7805C
LM7812C
LM7815C
See NS Package Number T03B
Order Number LM7805CT,
LM7812CT or LM7815CT
12V
15V
5V
Plastic Package
TO-220 (T)
Top View
DS007746-3
www.national.com
May 2000

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LM7805CK Summary of contents

Page 1

... Connection Diagrams Metal Can Package TO-3 (K) Aluminum DS007746-2 Bottom View Order Number LM7805CK, LM7812CK or LM7815CK See NS Package Number KC02A © 2000 National Semiconductor Corporation put, although this does improve transient response. Input by- passing is needed only if the regulator is located far from the filter capacitor of the power supply. ...

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Schematic www.national.com DS007746-1 2 ...

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... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Input Voltage (V = 5V, 12V and 15V) O Internal Power Dissipation (Note 1) Operating Temperature Range ( Electrical Characteristics LM78XXC 0˚C T 125˚C unless otherwise noted. ...

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Electrical Characteristics LM78XXC 0˚C T 125˚C unless otherwise noted. J Output Voltage Input Voltage (unless otherwise noted) Symbol Parameter Short-Circuit Tj = 25˚C Current Peak Output Tj = 25˚C Current Average TC of 0˚ OUT V Input Voltage ...

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Typical Performance Characteristics Maximum Average Power Dissipation Peak Output Current Ripple Rejection Maximum Average Power Dissipation DS007746-5 Output Voltage (Normalized DS007746-7 Ripple Rejection DS007746-9 5 DS007746-6 = 25˚C) J DS007746-8 DS007746-10 www.national.com ...

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Typical Performance Characteristics Output Impedance Dropout Characteristics Quiescent Current www.national.com (Continued) Dropout Voltage DS007746-11 Quiescent Current DS007746-13 DS007746-15 6 DS007746-12 DS007746-14 ...

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... Physical Dimensions inches (millimeters) unless otherwise noted Order Number LM7805CK, LM7812CK or LM7815CK Aluminum Metal Can Package (KC) NS Package Number KC02A 7 www.national.com ...

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... NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant ...

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