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PDF LM7805C Data sheet ( Hoja de datos )
| Número de pieza | LM7805C | |
| Descripción | 3-Terminal Positive Regulators | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
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January 1995
LM140A LM140 LM340A LM340 LM7800C
Series 3-Terminal Positive Regulators
General Description
The LM140A LM140 LM340A LM340 LM7800C monolith-
ic 3-terminal positive voltage regulators employ internal cur-
rent-limiting thermal shutdown and safe-area compensa-
tion making them essentially indestructible If adequate
heat sinking is provided they can deliver over 1 0A output
current They are intended as fixed voltage regulators in a
wide range of applications including local (on-card) regula-
tion for elimination of noise and distribution problems asso-
ciated with single-point regulation In addition to use as fixed
voltage regulators these devices can be used with external
components to obtain adjustable output voltages and cur-
rents
Considerable effort was expended to make the entire series
of regulators easy to use and minimize the number of exter-
nal components It is not necessary to bypass the output
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
The 5V 12V and 15V regulator options are available in the
steel TO-3 power package The LM340A LM340 LM7800C
series is available in the TO-220 plastic power package and
the LM7805 and LM7812 are also available in the surface-
mount TO-263 package
Features
Y Complete specifications at 1A load
Y Output voltage tolerances of g2% at Tj e 25 C and
g4% over the temperature range (LM140A LM340A)
Y Line regulation of 0 01% of VOUT V of DVIN at 1A load
(LM140A LM340A)
Y Load regulation of 0 3% of VOUT A (LM140A LM340A)
Y Internal thermal overload protection
Y Internal short-circuit current limit
Y Output transistor safe area protection
Y Pa Product Enhancement tested
Device Output Voltages
Packages
LM140A LM140 5 12 15
TO-3 (K)
LM340A LM340 5 12 15
TO-3 (K) TO-220 (T)
LM7800C
5 6 8 12 15
18 24
TO-220 (T) TO-263 (S)
(5V and 12V only)
Typical Applications
Fixed Output Regulator
Adjustable Output Regulator
Current Regulator
TL H 7781–1
Required if the regulator is located far from the
power supply filter
Although no output capacitor is needed for sta-
bility it does help transient response (If need-
ed use 0 1 mF ceramic disc)
TL H 7781 – 2
VOUT e 5V a (5V R1 a IQ) R2 5V R1 l 3 IQ
load regulation (Lr)
(R1 a R2) R1 (Lr of
LM340-5)
TL H 7781 – 3
V2-3
IOUT e R1 a IQ
DIQ e 1 3 mA over line and load changes
C1995 National Semiconductor Corporation TL H 7781
RRD-B30M115 Printed in U S A
1 page  
LM7806C
Electrical Characteristics
0 C s TJ s a150 C VI e 11V IO e 500 mA CI e 0 33 mF CO e 0 1 mF unless otherwise specified
Symbol
Parameter
Conditions (Note 4)
Min Typ Max Units
VO Output Voltage
TJ e 25 C
5 75 6 0 6 25
V
DVO
Line Regulation
TJ e 25 C
8 0V s VI s 25V
9 0V s VI s 13V
5 0 120
1 5 60
mV
DVO
Load Regulation
TJ e 25 C
5 0 mA s IO s 1 5A
250 mA s IO s 750 mA
14 120
4 0 60
mV
VO Output Voltage
8 0V s VI s 21V 5 0 mA s IO s 1 0A P s 15W
57
63 V
IQ Quiescent Current
TJ e 25 C
43 80
mA
DIQ Quiescent Current With Line 8 0V s VI s 25V
Change
With Load 5 0 mA s IO s 1 0A
13
mA
05
VN Noise
TA e 25 C 10 Hz s f s 100 kHz
45 mV
DVI DVO Ripple Rejection
f e 120 Hz IO e 350 mA TJ e 25 C
59 75
dB
VDO Dropout Voltage
IO e 1 0A TJ e 25 C
20 V
RO Output Resistance
f e 1 0 kHz
9 mX
IOS
Output Short Circuit Current
TJ e 25 C VI e 35V
550 mA
IPK Peak Output Current
TJ e 25 C
22 A
DVO DT
Average Temperature
Coefficient of Output Voltage
IO e 5 0 mA 0 C s TA s a125 C
0 8 mV C
LM7808C
Electrical Characteristics
0 C s TJ s a150 C VI e 14V IO e 500 mA CI e 0 33 mF CO e 0 1 mF unless otherwise specified
Symbol
Parameter
Conditions (Note 4)
LM7808C
Min Typ Max
Units
VO Output Voltage
TJ e 25 C
77 80 83
V
DVO
Line Regulation
TJ e 25 C
10 5V s VI s 25V
11 0V s VI s 17V
6 0 160
2 0 80
mV
DVO
Load Regulation
TJ e 25 C
5 0 mA s IO s 1 5A
250 mA s IO s 750 mA
12 160
4 0 80
mV
VO Output Voltage
11 5V s VI s 23V 5 0 mA s IO s 1 0A P s 15W
76
84 V
IQ Quiescent Current
TJ e 25 C
43 80
mA
DIQ Quiescent
With Line 11 5V s VI s 25V
Current Change
With Load 5 0 mA s IO s 1 0A
10
mA
05
VN Noise
TA e 25 C 10 Hz s f s 100 kHz
52 mV
DVI DVO Ripple Rejection
f e 120 Hz IO e 350 mA TJ e 25 C
56 72
dB
VDO Dropout Voltage
IO e 1 0A TJ e 25 C
20 V
RO Output Resistance
f e 1 0 kHz
16 mX
IOS
Output Short Circuit Current
TJ e 25 C VI e 35V
0 45
A
IPK Peak Output Current
TJ e 25 C
22 A
DVO DT
Average Temperature
Coefficient of Output Voltage
IO e 5 0 mA
0 8 mV C
Note 4 All characteristics are measured with a 0 22 mF capacitor from input to ground and a 0 1 mF capacitor from output to ground All characteristics except
noise voltage and ripple rejection ratio are measured using pulse techniques (tw s 10 ms duty cycle s 5%) Output voltage changes due to changes in internal
temperature must be taken into account separately
5
5 Page 
Connection Diagrams and Ordering Information
TO-3 Metal Can Package (K)
TO-220 Power Package (T)
Bottom View
TL H 7781 – 11
Steel Package Order Numbers
LM140K-5 0
LM140K-12
LM140K-15
LM340AK-5 0
LM340K-12
LM340K-15
LM340K-5 0
See Package Number K02A
LM140AK-5 0 883 LM140AK-12 883 LM140AK-15 883
LM140K-5 0 883 LM140K-12 883 LM140K-15 883
See Package Number K02C
TO-39 Metal Can Package (H)
Top View
TL H 7781 – 12
Plastic Package Order Numbers
LM340AT-5 0 LM340T-5 0
LM340AT-12 LM340T-12
LM340AT-15 LM340T-15
LM7805CT LM7812CT
LM7815CT LM7806CT
LM7808CT LM7818CT
LM7824CT
See Package Number T03B
TO-263 Surface-Mount Package (S)
Top View
TL H 7781 – 20
Top View
TL H 7781 – 19
Metal Can Order Numbers
LM140H-5 0 883 LM140H-6 0 883
LM140H-8 0 883 LM140H-12 883
LM140H-15 883 LM140H-24 883
See Package Number H03A
Side View
TL H 7781 – 21
Surface-Mount Package Order Numbers
LM7805S LM7812S
See Package Number TS3B
The specifications for the LM140H 883 devices are not contained in this datasheet If specifications for these devices
are required contact the National Semiconductor Sales Office Distributors
11
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet LM7805C.PDF ] | |
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