Texas Instruments LM340MP, LM340MPX, LM340AT, LM340K, LM340S Schematic [ru]

LM340-N, LM78xx

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LM340-N/LM78XX Series 3-Terminal Positive Regulators

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1

FEATURES

2

• Complete Specifications at 1A Load

• Output Voltage Tolerances of ±2% at Tj= 25°C
and ±4% Over the Temperature Range
(LM340A)

• Line Regulation of 0.01% of V
1A Load (LM340A)

• Load Regulation of 0.3% of V

• Internal Thermal Overload Protection

• Internal Short-circuit Current Limit

• Output Transistor Safe Area Protection

• P+Product Enhancement Tested

/V of ΔVINat

OUT

/A (LM340A)

OUT

SNOSBT0J –FEBRUARY 2000–REVISED DECEMBER 2013

DESCRIPTION

The LM140/LM340A/LM340-N/LM78XXC monolithic
3-terminal positive voltage regulators employ internal
current-limiting, thermal shutdown and safe-area
compensation, 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) regulation for elimination of
noise and distribution problems associated 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 currents.

Considerable effort was expended to make the entire
series of regulators easy to use and minimize the
number of external components. It is not necessary to
bypass the output, although this does improve
transient response. Input bypassing 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-N/LM78XXC series is available in the
TO-220 plastic power package, and the LM340-N-5.0
is available in the SOT-223 package, as well as the
LM340-5.0 and LM340-12 in the surface-mount
DDPAK/TO-263 package.

Typical Applications

*Required if the regulator is located far from the power supply filter.
**Although no output capacitor is needed for stability, it does help
transient response. (If needed, use 0.1 μF, ceramic disc).

Figure 1. Fixed Output Regulator Figure 2. Adjustable Output Regulator

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.

V

= 5V + (5V/R1 + IQ) R2 5V/R1 > 3 IQ,

OUT

load regulation (Lr) ≈ [(R1 + R2)/R1] (Lrof LM340-5).

Copyright © 2000–2013, Texas Instruments Incorporated

SOT-223 DDPAK/TO-263

LM340-N, LM78xx

SNOSBT0J –FEBRUARY 2000–REVISED DECEMBER 2013

ΔIQ= 1.3 mA over line and load changes.

Figure 3. Current Regulator Figure 4. Comparison between SOT-223 and

DDPAK/TO-263 Packages

Scale 1:1

Connection Diagrams

Figure 5. DDPAK/TO-263 Surface-Mount Package Figure 6. 3-Lead SOT-223

Top View Top View

See Package Number KTT0003B See Package Number DCY

These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.

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Absolute Maximum Ratings

DC Input Voltage 35V
Internal Power Dissipation
Maximum Junction Temperature 150°C
Storage Temperature Range −65°C to +150°C
Lead Temperature (Soldering, 10 sec.) TO-3 Package (NDS) 300°C

ESD Susceptibility

(1) Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Conditions are conditions under which

the device functions but the specifications might not be ensured. For ensured specifications and test conditions see the Electrical
Characteristics.

(2) Military datasheets are available upon request. At the time of printing, the military datasheet specifications for the LM140K-5.0/883,

LM140K-12/883, and LM140K-15/883 complied with the min and max limits for the respective versions of the LM140. The LM140H and
LM140K may also be procured as JAN devices on slash sheet JM38510/107.

(3) If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/Distributors for availability and

specifications.

(4) The maximum allowable power dissipation at any ambient temperature is a function of the maximum junction temperature for operation

(T

= 125°C or 150°C), the junction-to-ambient thermal resistance (θJA), and the ambient temperature (TA). P

JMAX

TA)/θJA. If this dissipation is exceeded, the die temperature will rise above T
temperature rises above 150°C, the device will go into thermal shutdown. For the TO-3 package (NDS), the junction-to-ambient thermal
resistance (θJA) is 39°C/W. When using a heatsink, θJAis the sum of the 4°C/W junction-to-case thermal resistance (θJC) of the TO-3
package and the case-to-ambient thermal resistance of the heatsink. For the TO-220 package (NDE), θJAis 54°C/W and θJCis 4°C/W. If
SOT-223 is used, the junction-to-ambient thermal resistance is 174°C/W and can be reduced by a heatsink (see Applications Hints on
heatsinking).If the DDPAK\TO-263 package is used, the thermal resistance can be reduced by increasing the PC board copper area
thermally connected to the package: Using 0.5 square inches of copper area, θJAis 50°C/W; with 1 square inch of copper area, θJAis
37°C/W; and with 1.6 or more inches of copper area, θJAis 32°C/W.

(5) ESD rating is based on the human body model, 100 pF discharged through 1.5 kΩ.

(4)

(5)

(1)(2)(3)

Internally Limited

TO-220 Package (NDE), DDPAK/TO-263
Package (KTT) 230°C

2 kV

= (T

and the electrical specifications do not apply. If the die

JMAX

DMAX

JMAX

−

Operating Conditions

(1) Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Conditions are conditions under which

the device functions but the specifications might not be ensured. For ensured specifications and test conditions see the Electrical
Characteristics.

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(1)

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Operating Conditions

(1)

(continued)

SNOSBT0J –FEBRUARY 2000–REVISED DECEMBER 2013

LM140 −55°C to +125°C

Temperature Range (TA)

(2)

LM340A, LM340-N 0°C to +125°C
LM7808C 0°C to +125°C

(2) The maximum allowable power dissipation at any ambient temperature is a function of the maximum junction temperature for operation

(T

= 125°C or 150°C), the junction-to-ambient thermal resistance (θJA), and the ambient temperature (TA). P

JMAX

TA)/θJA. If this dissipation is exceeded, the die temperature will rise above T
temperature rises above 150°C, the device will go into thermal shutdown. For the TO-3 package (NDS), the junction-to-ambient thermal

and the electrical specifications do not apply. If the die

JMAX

DMAX

= (T

JMAX

−

resistance (θJA) is 39°C/W. When using a heatsink, θJAis the sum of the 4°C/W junction-to-case thermal resistance (θJC) of the TO-3
package and the case-to-ambient thermal resistance of the heatsink. For the TO-220 package (NDE), θJAis 54°C/W and θJCis 4°C/W. If
SOT-223 is used, the junction-to-ambient thermal resistance is 174°C/W and can be reduced by a heatsink (see Applications Hints on
heatsinking).If the DDPAK\TO-263 package is used, the thermal resistance can be reduced by increasing the PC board copper area
thermally connected to the package: Using 0.5 square inches of copper area, θJAis 50°C/W; with 1 square inch of copper area, θJAis
37°C/W; and with 1.6 or more inches of copper area, θJAis 32°C/W.

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LM340A Electrical Characteristics

I

= 1A, 0°C ≤ TJ≤ + 125°C (LM340A) unless otherwise specified

OUT

Output Voltage 5V 12V 15V

Symbol Input Voltage (unless otherwise noted) 10V 19V 23V Units

Parameter Conditions Min Typ Max Min Typ Max Min Typ Max

V

ΔV

Output TJ= 25°C 4.9 5 5.1 11.75 12 12.25 14.7 15 15.3 V

O

Voltage

Line IO= 500 mA 10 18 22 mV

O

Regulation

PD≤ 15W, 5 mA ≤ IO≤ 1A 4.8 5.2 11.5 12.5 14.4 15.6 V
V

MIN

ΔV

≤ VIN≤ V

IN

MAX

(7.5 ≤ VIN≤ 20) (14.8 ≤ VIN≤ 27) (17.9 ≤ VIN≤ 30) V

(7.5 ≤ VIN≤ 20) (14.8 ≤ VIN≤ 27) (17.9 ≤ VIN≤ 30) V
TJ= 25°C 3 10 4 18 4 22 mV
ΔV

IN

(7.5 ≤ VIN≤ 20) (14.5 ≤ VIN≤ 27) (17.5 ≤ VIN≤ 30) V
TJ= 25°C 4 9 10 mV
Over Temperature 12 30 30 mV

ΔV

ΔV

IN

Load TJ= 5 mA ≤ IO≤ 1.5A 10 25 12 32 12 35 mV

O

Regulation 25°C

250 mA ≤ IO≤ 15 19 21 mV

(8 ≤ VIN≤ 12) (16 ≤ VIN≤ 22) (20 ≤ VIN≤ 26) V

750 mA
Over Temperature, 25 60 75 mV
5 mA ≤ IO≤ 1A

I

Q

ΔI

Quiescent TJ= 25°C 6 6 6 mA
Current

Quiescent 5 mA ≤ IO≤ 1A 0.5 0.5 0.5 mA

Q

Current
Change

Over Temperature 6.5 6.5 6.5 mA

TJ= 25°C, IO= 1A 0.8 0.8 0.8 mA
V

MIN

≤ VIN≤ V

MAX

(7.5 ≤ VIN≤ 20) (14.8 ≤ VIN≤ 27) (17.9 ≤ VIN≤ 30) V
IO= 500 mA 0.8 0.8 0.8 mA
V

≤ VIN≤ V

MIN

V

Output Noise TA= 25°C, 10 Hz ≤ f ≤ 100 40 75 90 μV

N

Voltage kHz

MAX

(8 ≤ VIN≤ 25) (15 ≤ VIN≤ 30) (17.9 ≤ VIN≤ 30) V

Ripple TJ= 25°C, f = 120 Hz, IO= 68 80 61 72 60 70 dB
Rejection 1A

or f = 120 Hz, IO= 500 mA, 68 61 60 dB
Over Temperature,
V

≤ VIN≤ V

MIN

R

Dropout TJ= 25°C, IO= 1A 2.0 2.0 2.0 V

O

Voltage

MAX

(8 ≤ VIN≤ 18) (15 ≤ VIN≤ 25) (18.5 ≤ VIN≤ 28.5) V

Output f = 1 kHz 8 18 19 mΩ
Resistance

Short-Circuit TJ= 25°C 2.1 1.5 1.2 A
Current

Peak Output TJ= 25°C 2.4 2.4 2.4 A
Current

Average TC Min, TJ= 0°C, IO= 5 mA −0.6 −1.5 −1.8 mV/°C
of V

O

V

Input Voltage TJ= 25°C

IN

Required to
Maintain Line

7.5 14.5 17.5 V

Regulation

(1) All characteristics are measured with a 0.22 μF capacitor from input to ground and a 0.1 μF capacitor from output to ground. All

characteristics except noise voltage and ripple rejection ratio are measured using pulse techniques (tw≤ 10 ms, duty cycle ≤ 5%).
Output voltage changes due to changes in internal temperature must be taken into account separately.

(1)

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LM140 Electrical Characteristics

(1)

SNOSBT0J –FEBRUARY 2000–REVISED DECEMBER 2013

−55°C ≤ TJ≤ +150°C unless otherwise specified

Symb

Input Voltage (unless otherwise noted) 10V 19V 23V Units

ol

Parameter Conditions Min Typ Max Min Typ Max Min Typ Max

V

Output Voltage TJ= 25°C, 5 mA ≤ IO≤ 1A 4.8 5 5.2 11.5 12 12.5 14.4 15 15.6 V

O

ΔVOLine IO= 500 TJ= 25°C 3 50 4 120 4 150 mV

Regulation mA

ΔVOLoad TJ= 5 mA ≤ IO≤ 10 50 12 120 12 150 mV

Regulation 25°C 1.5A

I

ΔI

Quiescent IO≤ 1A TJ= 25°C 6 6 6 mA

Q

Current

Quiescent 5 mA ≤ IO≤ 1A 0.5 0.5 0.5 mA

Q

Current
Change

V

Output Noise TA= 25°C, 10 Hz ≤ f ≤ 100 40 75 90 μV

N

Voltage kHz
Ripple f = 120 IO≤ 1A, TJ= 68 80 61 72 60 70 dB

Rejection Hz 25°C or

R

Dropout TJ= 25°C, IO= 1A 2.0 2.0 2.0 V

O

Voltage
Output f = 1 kHz 8 18 19 mΩ

Resistance
Short-Circuit TJ= 25°C 2.1 1.5 1.2 A

Current
Peak Output TJ= 25°C 2.4 2.4 2.4 A

Current
Average TC of 0°C ≤ TJ≤ +150°C, IO= 5 −0.6 −1.5 −1.8 mV/°C

V

OUT

Output Voltage 5V 12V 15V

PD≤ 15W, 5 mA ≤ IO≤ 1A 4.75 5.25 11.4 12.6 14.25 15.75 V
V

MIN

≤ VIN≤ V

ΔV

MAX

IN

(8 ≤ VIN≤ 20) (15.5 ≤ VIN≤ 27) (18.5 ≤ VIN≤ 30) V

(7 ≤ VIN≤ 25) (14.5 ≤ VIN≤ 30) (17.5 ≤ VIN≤ 30) V

−55°C ≤ TJ≤ 50 120 150 mV
+150°C

ΔV

IN

(8 ≤ VIN≤ 20) (15 ≤ VIN≤ 27) (18.5 ≤ VIN≤ 30) V

IO≤ 1A TJ= 25°C 50 120 150 mV

ΔV

IN

(7.5 ≤ VIN≤ 20) (14.6 ≤ VIN≤ 27) (17.7 ≤ VIN≤ 30) V

−55°C ≤ TJ≤ 25 60 75 mV
+150°C

ΔV

IN

(8 ≤ VIN≤ 12) (16 ≤ VIN≤ 22) (20 ≤ VIN≤ 26) V

250 mA ≤ IP≤ 25 60 75 mV
750 mA

−55°C ≤ TJ≤ +150°C, 50 120 150 mV
5 mA ≤ IO≤ 1A

−55°C ≤ TJ≤ 7 7 7 mA
+150°C

TJ= 25°C, IO≤ 1A 0.8 0.8 0.8 mA
V

MIN

≤ VIN≤ V

MAX

(8 ≤ VIN≤ 20) (15 ≤ VIN≤ 27) (18.5 ≤ VIN≤ 30) V

IO= 500 mA, −55°C ≤ TJ≤ 0.8 0.8 0.8 mA
+150°C

V

MIN

≤ VIN≤ V

MAX

(8 ≤ VIN≤ 25) (15 ≤ VIN≤ 30) (18.5 ≤ VIN≤ 30) V

IO≤ 500 mA, 68 61 60 dB

V

MIN

−55°C ≤ T
≤+150°C

≤ VIN≤ V

MAX

J

(8 ≤ VIN≤ 18) (15 ≤ VIN≤ 25) (18.5 ≤ VIN≤ 28.5) V

mA

(1) All characteristics are measured with a 0.22 μF capacitor from input to ground and a 0.1 μF capacitor from output to ground. All

characteristics except noise voltage and ripple rejection ratio are measured using pulse techniques (tw≤ 10 ms, duty cycle ≤ 5%).
Output voltage changes due to changes in internal temperature must be taken into account separately.

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LM140 Electrical Characteristics

(1)

(continued)

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−55°C ≤ TJ≤ +150°C unless otherwise specified

Symb

Input Voltage (unless otherwise noted) 10V 19V 23V Units

ol

Parameter Conditions Min Typ Max Min Typ Max Min Typ Max

V

Input Voltage TJ= 25°C, IO≤ 1A

IN

Required to
Maintain Line
Regulation

LM340-N Electrical Characteristics

Output Voltage 5V 12V 15V

7.5 14.6 17.7 V

(1)

0°C ≤ TJ≤ +125°C unless otherwise specified

Output Voltage 5V 12V 15V

Symbol Input Voltage (unless otherwise noted) 10V 19V 23V Units

Parameter Conditions Min Typ Max Min Typ Max Min Typ Max

V

ΔV

ΔV

I

Q

ΔI

V

(1) All characteristics are measured with a 0.22 μF capacitor from input to ground and a 0.1 μF capacitor from output to ground. All

6 Submit Documentation Feedback Copyright © 2000–2013, Texas Instruments Incorporated

Output Voltage TJ= 25°C, 5 mA ≤ IO≤ 1A 4.8 5 5.2 11.5 12 12.5 14.4 15 15.6 V

O

PD≤ 15W, 5 mA ≤ IO≤ 1A 4.75 5.25 11.4 12.6 14.25 15.75 V
V

≤ VIN≤ V

MIN

Line Regulation IO= 500 TJ= 25°C 3 50 4 120 4 150 mV

O

mA

ΔV

MAX

IN

(7.5 ≤ VIN≤ 20) (14.5 ≤ VIN≤ 27) (17.5 ≤ VIN≤ 30) V

(7 ≤ VIN≤ 25) (14.5 ≤ VIN≤ 30) (17.5 ≤ VIN≤ 30) V

0°C ≤ TJ≤ 50 120 150 mV
+125°C

ΔV

IN

(8 ≤ VIN≤ 20) (15 ≤ VIN≤ 27) (18.5 ≤ VIN≤ 30) V

IO≤ 1A TJ= 25°C 50 120 150 mV

ΔV

IN

(7.5 ≤ VIN≤ 20) (14.6 ≤ VIN≤ 27) (17.7 ≤ VIN≤ 30) V

0°C ≤ TJ≤ 25 60 75 mV
+125°C

ΔV

IN

Load Regulation TJ= 5 mA ≤ IO≤ 10 50 12 120 12 150 mV

O

25°C 1.5A

(8 ≤ VIN≤ 12) (16 ≤ VIN≤ 22) (20 ≤ VIN≤ 26) V

250 mA ≤ IO≤ 25 60 75 mV
750 mA

5 mA ≤ IO≤ 1A, 0°C ≤ T
≤ +125°C

J

50 120 150 mV

Quiescent IO≤ 1A TJ= 25°C 8 8 8 mA
Current

0°C ≤ TJ≤ 8.5 8.5 8.5 mA
+125°C

Quiescent 5 mA ≤ IO≤ 1A 0.5 0.5 0.5 mA

Q

Current Change

TJ= 25°C, IO≤ 1A 1.0 1.0 1.0 mA
V

MIN

≤ VIN≤ V

MAX

(7.5 ≤ VIN≤ 20) (14.8 ≤ VIN≤ 27) (17.9 ≤ VIN≤ 30) V

IO≤ 500 mA, 0°C ≤ TJ≤ 1.0 1.0 1.0 mA
+125°C

V

≤ VIN≤ V

MIN

Output Noise TA= 25°C, 10 Hz ≤ f ≤ 40 75 90 μV

N

Voltage 100 kHz

MAX

(7 ≤ VIN≤ 25) (14.5 ≤ VIN≤ 30) (17.5 ≤ VIN≤ 30) V

Ripple Rejection IO≤ 1A, TJ= 62 80 55 72 54 70 dB

25°C

f = 120
Hz

V

MIN

≤ VIN≤ V

or IO≤ 500 62 55 54 dB
mA,
0°C ≤ T
+125°C

MAX

≤

J

(8 ≤ VIN≤ 18) (15 ≤ VIN≤ 25) (18.5 ≤ VIN≤ 28.5) V

characteristics except noise voltage and ripple rejection ratio are measured using pulse techniques (tw≤ 10 ms, duty cycle ≤ 5%).
Output voltage changes due to changes in internal temperature must be taken into account separately.

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LM340-N Electrical Characteristics

(1)

(continued)

SNOSBT0J –FEBRUARY 2000–REVISED DECEMBER 2013

0°C ≤ TJ≤ +125°C unless otherwise specified

Output Voltage 5V 12V 15V

Symbol Input Voltage (unless otherwise noted) 10V 19V 23V Units

Parameter Conditions Min Typ Max Min Typ Max Min Typ Max

R

Dropout Voltage TJ= 25°C, IO= 1A 2.0 2.0 2.0 V

O

Output f = 1 kHz 8 18 19 mΩ
Resistance

Short-Circuit TJ= 25°C 2.1 1.5 1.2 A
Current

Peak Output TJ= 25°C 2.4 2.4 2.4 A
Current

Average TC of 0°C ≤ TJ≤ +125°C, IO= 5 −0.6 −1.5 −1.8 mV/°C
V

OUT

V

Input Voltage TJ= 25°C, IO≤ 1A

IN

Required to
Maintain Line

mA

7.5 14.6 17.7 V

Regulation

LM7808C Electrical Characteristics

0°C ≤ TJ≤ +150°C, VI= 14V, IO= 500 mA, CI= 0.33 μF, CO= 0.1 μF, unless otherwise specified

Symbol Parameter Conditions

V

ΔV

ΔV

V
I

Q

ΔI

O

O

Q

Output Voltage TJ= 25°C 7.7 8.0 8.3 V
Line Regulation TJ= 25°C 10.5V ≤ VI≤ 25V 6.0 160 mV

O

Load Regulation TJ= 25°C 5.0 mA ≤ IO≤ 1.5A 12 160 mV

O

Output Voltage 11.5V ≤ VI≤ 23V, 5.0 mA ≤ IO≤ 1.0A, P ≤ 15W 7.6 8.4 V
Quiescent Current TJ= 25°C 4.3 8.0 mA
Quiescent With Line 11.5V ≤ VI≤ 25V 1.0 mA
Current Change With Load 5.0 mA ≤ IO≤ 1.0A 0.5

V

N

Noise TA= 25°C, 10 Hz ≤ f ≤ 100 kHz 52 μV
ΔVI/ΔVORipple Rejection f = 120 Hz, IO= 350 mA, TJ= 25°C 56 72 dB
V

DO

R

O

I

OS

I

PK

Dropout Voltage IO= 1.0A, TJ= 25°C 2.0 V

Output Resistance f = 1.0 kHz 16 mΩ

Output Short Circuit Current TJ= 25°C, VI= 35V 0.45 A

Peak Output Current TJ= 25°C 2.2 A
ΔVO/ΔT Average Temperature Coefficient of IO= 5.0 mA

Output Voltage

(1)

LM7808C Units

Min Typ Max

11.0V ≤ VI≤ 17V 2.0 80

250 mA ≤ IO≤ 750 mA 4.0 80

0.8 mV/°C

(1) All characteristics are measured with a 0.22 μF capacitor from input to ground and a 0.1 μF capacitor from output to ground. All

characteristics except noise voltage and ripple rejection ratio are measured using pulse techniques (tw≤ 10 ms, duty cycle ≤ 5%).
Output voltage changes due to changes in internal temperature must be taken into account separately.

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Typical Performance Characteristics

Maximum Average Power Dissipation Maximum Average Power Dissipation

Figure 7. Figure 8.

Maximum Power Dissipation (DDPAK/TO-263)

(See Note 2) Output Voltage (Normalized to 1V at TJ= 25°C)

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Shaded area refers to LM340A/LM340-N, LM7805C, LM7812C and

Figure 9. Figure 10.

Ripple Rejection Ripple Rejection

Figure 11. Figure 12.

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Typical Performance Characteristics (continued)

Output Impedance Dropout Characteristics

Figure 13. Figure 14.

Quiescent Current Peak Output Current

Shaded area refers to LM340A/LM340-N, LM7805C, LM7812C and
LM7815C.

Shaded area refers to LM340A/LM340-N, LM7805C, LM7812C and
LM7815C.

Figure 15. Figure 16.

Dropout Voltage Quiescent Current

Figure 17. Figure 18.

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