L7800 SERIES.pdf

L7800

SERIES

POSITIVE VOLTAGE REGULATORS

OUTPUT CURRENT TO 1.5A

OUTPUT VOLTAGES OF 5; 5.2; 6; 8; 8.5; 9;

12; 15; 18; 24V

THERMAL OVERLOAD PROTECTION

SHORT CIRCUIT PROTECTION

OUTPUT TRANSITION SOA PROTECTION

DESCRIPTION

The L7800 series of three-terminal positive

regulators is available in TO-220, TO-220FP,

TO-3 and D 2 PAK packages and several fixed

output voltages, making it useful in a wide range of

applications. These regulators can provide local

on-card regulation, eliminating the distribution

problems associated with single point regulation.

Each type employs internal current limiting,

thermal shut-down and safe area protection,

making it essentially indestructible. If adequate

heat sinking is provided, they can deliver over 1A

output current. Although designed primarily as

fixed voltage regulators, these devices can be

used with external components to obtain

adjustable voltage and currents.

TO-220

TO-220FP

D 2 PAK

TO-3

SCHEMATIC DIAGRAM

February 2003

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L7800 SERIES

ABSOLUTE MAXIMUM RATINGS

Symbol

Parameter²

Value

Unit

V I

DC Input Voltage

for V O = 5 to 18V

for V O = 20, 24V

I O

Output Current

Internally Limited

P tot

Power Dissipation

Internally Limited

T stg

Storage Temperature Range

-65 to 150

°C

T op

Operating Junction Temperature

Range

for L7800

-55 to 150

°C

for L7800C

0 to 150

Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is

not implied.

THERMAL DATA

Symbol

Parameter

D 2 PAK

TO-220

TO-220FP

TO-3

Unit

R thj-case Thermal Resistance Junction-case Max

°C/W

R thj-amb Thermal Resistance Junction-ambient Max

62.5

°C/W

SCHEMATIC DIAGRAM

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L7800 SERIES

CONNECTION DIAGRAM (top view)

TO-220

TO-220FP

D 2 PAK

TO-3

ORDERING CODES

TYPE

TO-220

D 2 PAK (*)

TO-220FP

TO-3

OUTPUT

VOLTAGE

L7805

L7805T

5 V

L7805C

L7805CV

L7805CD2T

L7805CP

L7805CT

5 V

L7852C

L7852CV

L7852CD2T

L7852CP

L7852CT

5.2 V

L7806

L7806T

6 V

L7806C

L7806CV

L7806CD2T

L7806CP

L7806CT

6 V

L7808

L7808T

8 V

L7808C

L7808CV

L7808CD2T

L7808CP

L7808CT

8 V

L7885C

L7885CV

L7885CD2T

L7885CP

L7885CT

8.5 V

L7809C

L7809CV

L7809CD2T

L7809CP

L7809CT

9 V

L7812

L7812T

12 V

L7812C

L7812CV

L7812CD2T

L7812CP

L7812CT

12 V

L7815

L7815T

15 V

L7815C

L7815CV

L7815CD2T

L7815CP

L7815CT

15 V

L7818

L7818T

18 V

L7818C

L7818CV

L7818CD2T

L7818CP

L7818CT

18 V

L7820

L7820T

20 V

L7820C

L7820CV

L7820CD2T

L7820CP

L7820CT

20 V

L7824

L7824T

24 V

L7824C

L7824CV

L7824CD2T

L7824CP

L7824CT

24 V

(*) Available in Tape & Reel with the suffix "-TR".

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L7800 SERIES

APPLICATION CIRCUITS

TEST CIRCUITS

Figure 1 : DC Parameter

Figure 2 : Load Regulation

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L7800 SERIES

Figure 3 : Ripple Rejection

ELECTRICAL CHARACTERISTICS OF L7805 (refer to the test circuits, T J = -55 to 150°C, V I = 10V,

I O =500mA,C I =0.33µF,C O = 0.1 µF unless otherwise specified).

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

V O

Output Voltage

T J = 25°C

4.8

5.2

V O

Output Voltage

I O =5mAto1A P O £

15W

4.65

5.35

V I = 8 to 20 V

V O (*) Line Regulation

V I =7to25V

T J = 25°C

V I =8to12V

T J = 25°C

V O (*) Load Regulation

I O =5mAto1.5A

T J = 25°C

100

I O = 250 to 750 mA

T J = 25°C

I d

Quiescent Current

T J = 25°C

I d

Quiescent Current Change I O =5mAto1A

0.5

V I = 8 to 25 V

0.8

V O /

T Output Voltage Drift

I O = 5 mA

0.6

mV/°C

Output Noise Voltage

B =10Hz to 100KHz

T J = 25°C

V/V O

SVR Supply Voltage Rejection

V I = 8 to 18 V

f = 120Hz

V d

Dropout Voltage

I O =1A

T J = 25°C

2.5

R O

Output Resistance

f = 1 KHz

I sc

Short Circuit Current

V I =35V

T J = 25°C

0.75

1.2

I scp

Short Circuit Peak Current T J = 25°C

1.3

2.2

3.3

(*) Load and line regulation are specified at constant junction temperature. Changes in V O due to heating effects must be taken into account

separately. Pulse testing with low duty cycle is used.

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