LM7805CK National Semiconductor, LM7805CK Datasheet

LM7805CK

Manufacturer Part Number

LM7805CK

Description

Series Voltage Regulators

Manufacturer

National Semiconductor

Datasheets

1.LM7805CK.pdf (8 pages)

2.LM7815CK.pdf (8 pages)

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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

Plastic Package

TO-220 (T)

Top View

DS007746-3

www.national.com

May 2000

Related parts for LM7805CK

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. ...

Page 2

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

Page 3

... 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. ...

Page 4

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 ...

Page 5

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 ...

Page 6

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 ...

Page 7

... 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 ...

Page 8

... 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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