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LM340-N, LM78xx

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LM340-N/LM78XX Series 3-Terminal Positive Regulators

Check for Samples: LM340-N, LM78xx

FEATURES

• 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

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.

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

OUT

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

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

= 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.

(1)

Product Folder Links: LM340-N LM78xx

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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

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

JMAX

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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SNOSBT0J –FEBRUARY 2000–REVISED DECEMBER 2013

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LM340A Electrical Characteristics

= 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

ΔV

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

Voltage

Line IO= 500 mA 10 18 22 mV

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

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

(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

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

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

ΔI

Quiescent TJ= 25°C 6 6 6 mA Current

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

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

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

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

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

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

Input Voltage TJ= 25°C

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

Parameter Conditions Min Typ Max Min Typ Max Min Typ Max

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

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

ΔI

Quiescent IO≤ 1A TJ= 25°C 6 6 6 mA

Current

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

Current Change

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

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

Rejection Hz 25°C or

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

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

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

(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

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

IO≤ 1A TJ= 25°C 50 120 150 mV

ΔV

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

−55°C ≤ TJ≤ 25 60 75 mV +150°C

ΔV

(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

MIN

≤ VIN≤ V

MAX

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

IO≤ 500 mA, 68 61 60 dB

MIN

−55°C ≤ T ≤+150°C

≤ VIN≤ V

MAX

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

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SNOSBT0J –FEBRUARY 2000–REVISED DECEMBER 2013

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

Parameter Conditions Min Typ Max Min Typ Max Min Typ Max

Input Voltage TJ= 25°C, IO≤ 1A

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

ΔV

ΔI

(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

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

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

ΔV

MAX

(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

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

IO≤ 1A TJ= 25°C 50 120 150 mV

ΔV

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

0°C ≤ TJ≤ 25 60 75 mV +125°C

ΔV

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

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

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

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

≤ VIN≤ V

MIN

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

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

MIN

≤ VIN≤ V

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

MAX

≤

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

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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

Dropout Voltage TJ= 25°C, IO= 1A 2.0 2.0 2.0 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 of 0°C ≤ TJ≤ +125°C, IO= 5 −0.6 −1.5 −1.8 mV/°C V

OUT

Input Voltage TJ= 25°C, IO≤ 1A

Required to Maintain Line

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

ΔV

V I

ΔI

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

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

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

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

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

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SNOSBT0J –FEBRUARY 2000–REVISED DECEMBER 2013

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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LM7815C.

LM340-N, LM78xx

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SNOSBT0J –FEBRUARY 2000–REVISED DECEMBER 2013

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.

Figure 15. Figure 16.

Dropout Voltage Quiescent Current

Figure 17. Figure 18.

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SNOSBT0J –FEBRUARY 2000–REVISED DECEMBER 2013

Typical Performance Characteristics (continued)

Line Regulation Line Regulation

140AK-5.0, I

= 1A, TA= 25°C 140AK-5.0, VIN= 10V, TA= 25°C

OUT

Figure 19. Figure 20.

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Equivalent Schematic

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SNOSBT0J –FEBRUARY 2000–REVISED DECEMBER 2013

APPLICATION HINTS

The LM340-N/LM78XX series is designed with thermal protection, output short-circuit protection and output transistor safe area protection. However, as with any IC regulator, it becomes necessary to take precautions to assure that the regulator is not inadvertently damaged. The following describes possible misapplications and methods to prevent damage to the regulator.

SHORTING THE REGULATOR INPUT

When using large capacitors at the output of these regulators, a protection diode connected input to output (Figure 21) may be required if the input is shorted to ground. Without the protection diode, an input short will cause the input to rapidly approach ground potential, while the output remains near the initial V

because of the

OUT

stored charge in the large output capacitor. The capacitor will then discharge through a large internal input to output diode and parasitic transistors. If the energy released by the capacitor is large enough, this diode, low current metal and the regulator will be destroyed. The fast diode in Figure 21 will shunt most of the capacitors discharge current around the regulator. Generally no protection diode is required for values of output capacitance ≤ 10 μF.

RAISING THE OUTPUT VOLTAGE ABOVE THE INPUT VOLTAGE

Since the output of the device does not sink current, forcing the output high can cause damage to internal low current paths in a manner similar to that just described in the “Shorting the Regulator Input” section.

REGULATOR FLOATING GROUND (Figure 22)

When the ground pin alone becomes disconnected, the output approaches the unregulated input, causing possible damage to other circuits connected to V also occur to the regulator. This fault is most likely to occur when plugging in regulators or modules with on card regulators into powered up sockets. Power should be turned off first, thermal limit ceases operating, or ground should be connected first if power must be left on.

. If ground is reconnected with power “ON”, damage may

OUT

TRANSIENT VOLTAGES

If transients exceed the maximum rated input voltage of the device, or reach more than 0.8V below ground and have sufficient energy, they will damage the regulator. The solution is to use a large input capacitor, a series input breakdown diode, a choke, a transient suppressor or a combination of these.

Figure 21. Input Short

Figure 22. Regulator Floating Ground

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Figure 23. Transients

When a value for θ

is found using the equation shown, a heatsink must be selected that has a value that is

(H–A)

less than or equal to this number.

is specified numerically by the heatsink manufacturer in this catalog, or shown in a curve that plots

(H–A)

temperature rise vs power dissipation for the heatsink.

HEATSINKING DDPAK/TO-263 AND SOT-223 PACKAGE PARTS

Both the DDPAK/TO-263 (KTT) and SOT-223 (DCY) packages use a copper plane on the PCB and the PCB itself as a heatsink. To optimize the heat sinking ability of the plane and PCB, solder the tab of the plane.

shows for the DDPAK/TO-263 the measured values of θ with 1 ounce copper and no solder mask over the copper area used for heatsinking.

for different copper area sizes using a typical PCB

(J–A)

Figure 24. θ

vs Copper (1 ounce) Area for the DDPAK/TO-263 Package

(J–A)

As shown in the figure, increasing the copper area beyond 1 square inch produces very little improvement. It should also be observed that the minimum value of θ

for the DDPAK/TO-263 package mounted to a PCB is

(J–A)

32°C/W. As a design aid, Figure 25 shows the maximum allowable power dissipation compared to ambient temperature

for the DDPAK/TO-263 device (assuming θ

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is 35°C/W and the maximum junction temperature is 125°C).

(J–A)

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Figure 25. Maximum Power Dissipation vs T

AMB

SNOSBT0J –FEBRUARY 2000–REVISED DECEMBER 2013

for the DDPAK/TO-263 Package

Figure 26 and Figure 27 show the information for the SOT-223 package. Figure 26 assumes a θ

for 1 ounce copper and 51°C/W for 2 ounce copper and a maximum junction temperature of 125°C.

(J–A)

of 74°C/W

Figure 26. θ

vs Copper (2 ounce) Area

(J–A)

for the SOT-223 Package

Figure 27. Maximum Power Dissipation vs

for the SOT-223 Package

AMB

Please see AN-1028 (SNVA036) for power enhancement techniques to be used with the SOT-223 package.

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0.1 PF

0.22 PF

OUTPUTINPUT

GND

0.1 PF

(NOTE 1)

0.22 PF

OUTPUTINPUT

GND

0.1 PF0.22 PF

OUTPUTINPUT

GND

LM340-N, LM78xx

SNOSBT0J –FEBRUARY 2000–REVISED DECEMBER 2013

Typical Applications

Bypass capacitors are recommended for optimum stability and transient response, and should be located as close as possible to the regulator.

Figure 28. Fixed Output Regulator

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Figure 29. High Input Voltage Circuits

Product Folder Links: LM340-N LM78xx

0.1 PF

0.22 PF

OUTPUT

INPUT

GND

OUT

3.0:

2N6132

2N6124

0.1 PF

0.22 PF

OUTPUT

INPUT

GND

3.0:

2N6133

IO MAX

REG

LM340-N, LM78xx

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SNOSBT0J –FEBRUARY 2000–REVISED DECEMBER 2013

Figure 30. High Current Voltage Regulator

Figure 31. High Output Current, Short Circuit Protected

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0.1 PF

OUTPUTINPUT

GND

+ OUT

+ +

0.1 PF

OUTPUTINPUT

GND

- OUT

+ +

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SNOSBT0J –FEBRUARY 2000–REVISED DECEMBER 2013

Figure 32. Positive and Negative Regulator

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SNOSBT0J –FEBRUARY 2000–REVISED DECEMBER 2013

REVISION HISTORY

Changes from Revision I (March 2013) to Revision J Page

• Changed 0.5 from typ to max ............................................................................................................................................... 4

Product Folder Links: LM340-N LM78xx

PACKAGE OPTION ADDENDUM

www.ti.com

PACKAGING INFORMATION

Orderable Device Status

LM340AT-5.0 NRND TO-220 NDE 3 45 TBD Call TI Call TI 0 to 70 LM340AT

LM340AT-5.0/NOPB ACTIVE TO-220 NDE 3 45 Pb-Free (RoHS

LM340K-5.0 ACTIVE TO-3 NDS 2 50 TBD Call TI Call TI 0 to 70 LM340K

LM340K-5.0/NOPB ACTIVE TO-3 NDS 2 50 Green (RoHS

LM340MP-5.0 NRND SOT-223 DCY 4 1000 TBD Call TI Call TI 0 to 70 N00A

LM340MP-5.0/NOPB ACTIVE SOT-223 DCY 4 1000 Green (RoHS

LM340MPX-5.0/NOPB ACTIVE SOT-223 DCY 4 2000 Green (RoHS

LM340S-12/NOPB ACTIVE DDPAK/

LM340S-5.0 NRND DDPAK/

LM340S-5.0/NOPB ACTIVE DDPAK/

LM340SX-12/NOPB ACTIVE DDPAK/

LM340SX-5.0 NRND DDPAK/

LM340SX-5.0/NOPB ACTIVE DDPAK/

LM340T-12 NRND TO-220 NDE 3 45 TBD Call TI Call TI 0 to 70 LM340T12

LM340T-12/NOPB ACTIVE TO-220 NDE 3 45 Green (RoHS

LM340T-15 NRND TO-220 NDE 3 45 TBD Call TI Call TI 0 to 70 LM340T15

LM340T-15/NOPB ACTIVE TO-220 NDE 3 45 Green (RoHS

LM340T-5.0 NRND TO-220 NDE 3 45 TBD Call TI Call TI 0 to 70 LM340T5

Package Type Package

(1)

TO-263

Drawing

Qty

KTT 3 45 Pb-Free (RoHS

KTT 3 45 TBD Call TI Call TI 0 to 70 LM340S

KTT 3 45 Pb-Free (RoHS

KTT 3 500 Pb-Free (RoHS

KTT 3 500 TBD Call TI Call TI 0 to 70 LM340S

KTT 3 500 Pb-Free (RoHS

Pins Package

Eco Plan

(2)

Exempt)

& no Sb/Br)

Exempt)

& no Sb/Br)

Lead/Ball Finish

(6)

MSL Peak Temp

(3)

Op Temp (°C) Device Marking

CU SN Level-1-NA-UNLIM 0 to 70 LM340AT

Call TI Level-1-NA-UNLIM 0 to 70 LM340K

CU SN Level-1-260C-UNLIM 0 to 70 N00A

CU SN Level-3-245C-168 HR 0 to 70 LM340S

CU SN Level-1-NA-UNLIM 0 to 70 LM340T12

CU SN Level-1-NA-UNLIM 0 to 70 LM340T15

11-Feb-2015

Samples

(4/5)

5.0 P+

-5.0 7805P+

-12 P+

-5.0 P+

-12 P+

-5.0 P+

7812 P+

7815 P+

Addendum-Page 1

PACKAGE OPTION ADDENDUM

www.ti.com

Orderable Device Status

LM340T-5.0/LF01 ACTIVE TO-220 NDG 3 45 Pb-Free (RoHS

LM340T-5.0/NOPB ACTIVE TO-220 NDE 3 45 Pb-Free (RoHS

LM7812CT/NOPB ACTIVE TO-220 NDE 3 45 Green (RoHS

(1)

The marketing status values are defined as follows:

ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device.

Package Type Package

(1)

Drawing

Pins Package

Qty

Eco Plan

(2)

Exempt)

& no Sb/Br)

Lead/Ball Finish

(6)

CU SN Level-4-260C-72 HR LM340T5

CU SN Level-1-NA-UNLIM 0 to 70 LM340T5

CU SN Level-1-NA-UNLIM 0 to 70 LM340T12

MSL Peak Temp

(3)

Op Temp (°C) Device Marking

7805 P+

7812 P+

11-Feb-2015

(4/5)

(2)

Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability

information and additional product content details.

TBD: The Pb-Free/Green conversion plan has not been defined. Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that

lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes. Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above. Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)

(3)

MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.

(4)

There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device.

(5)

Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation

of the previous line and the two combined represent the entire Device Marking for that device.

(6)

Lead/Ball Finish - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead/Ball Finish values may wrap to two lines if the finish

value exceeds the maximum column width.

Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and

Samples

Addendum-Page 2

PACKAGE OPTION ADDENDUM

www.ti.com

continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.

11-Feb-2015

In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.

Addendum-Page 3

PACKAGE MATERIALS INFORMATION

www.ti.com 5-Dec-2014

TAPE AND REEL INFORMATION

*All dimensions are nominal

Device Package

LM340MP-5.0 SOT-223 DCY 4 1000 330.0 16.4 7.0 7.5 2.2 12.0 16.0 Q3

LM340MP-5.0/NOPB SOT-223 DCY 4 1000 330.0 16.4 7.0 7.5 2.2 12.0 16.0 Q3

LM340MPX-5.0/NOPB SOT-223 DCY 4 2000 330.0 16.4 7.0 7.5 2.2 12.0 16.0 Q3

LM340SX-12/NOPB DDPAK/

TO-263

LM340SX-5.0 DDPAK/

TO-263

LM340SX-5.0/NOPB DDPAK/

TO-263

Type

Package Drawing

Pins SPQ Reel

Diameter

(mm)

KTT 3 500 330.0 24.4 10.75 14.85 5.0 16.0 24.0 Q2

Reel

Width

W1 (mm)

(mm)B0(mm)K0(mm)P1(mm)W(mm)

Pin1

Quadrant

Pack Materials-Page 1

PACKAGE MATERIALS INFORMATION

www.ti.com 5-Dec-2014

*All dimensions are nominal

Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm)

LM340MP-5.0 SOT-223 DCY 4 1000 367.0 367.0 35.0

LM340MP-5.0/NOPB SOT-223 DCY 4 1000 367.0 367.0 35.0

LM340MPX-5.0/NOPB SOT-223 DCY 4 2000 367.0 367.0 35.0

LM340SX-12/NOPB DDPAK/TO-263 KTT 3 500 367.0 367.0 45.0

LM340SX-5.0 DDPAK/TO-263 KTT 3 500 367.0 367.0 45.0

LM340SX-5.0/NOPB DDPAK/TO-263 KTT 3 500 367.0 367.0 45.0

Pack Materials-Page 2

NDS0002A

MECHANICAL DATA

www.ti.com

NDE0003B

MECHANICAL DATA

www.ti.com

NDG0003F

MECHANICAL DATA

www.ti.com

T03F (Rev B)

MECHANICAL DATA

MPDS094A – APRIL 2001 – REVISED JUNE 2002

DCY (R-PDSO-G4) PLASTIC SMALL-OUTLINE

6,70 (0.264) 6,30 (0.248)

3,10 (0.122)

2,90 (0.114)

0,10 (0.004)

7,30 (0.287) 6,70 (0.264)

1 2 3

2,30 (0.091)

4,60 (0.181)

1,80 (0.071) MAX

0,10 (0.0040)

0,02 (0.0008)

NOTES: A. All linear dimensions are in millimeters (inches).

B. This drawing is subject to change without notice. C. Body dimensions do not include mold flash or protrusion. D. Falls within JEDEC TO-261 Variation AA.

3,70 (0.146) 3,30 (0.130)

0,84 (0.033) 0,66 (0.026)

0,10 (0.004)

1,70 (0.067) 1,50 (0.059)

Seating Plane

0,08 (0.003)

0°–10°

Gauge Plane

0,25 (0.010)

0,75 (0.030) MIN

0,35 (0.014) 0,23 (0.009)

4202506/B 06/2002

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

KTT0003B

MECHANICAL DATA

BOTTOM SIDE OF PACKAGE

TS3B (Rev F)

www.ti.com

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TI warrants performance of its components to the specifications applicable at the time of sale, in accordance with the warranty in TI’s terms and conditions of sale of semiconductor products. Testing and other quality control techniques are used to the extent TI deems necessary to support this warranty. Except where mandated by applicable law, testing of all parameters of each component is not necessarily performed.

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Texas Instruments LM340MP, LM340MPX, LM340AT, LM340K, LM340S Schematics

Specifications and Main Features

Frequently Asked Questions

User Manual

FEATURES

DESCRIPTION

Typical Applications

Connection Diagrams

Absolute Maximum Ratings

Operating Conditions

LM340A Electrical Characteristics

LM140 Electrical Characteristics

LM340-N Electrical Characteristics

LM7808C Electrical Characteristics

Typical Performance Characteristics

Equivalent Schematic

APPLICATION HINTS

SHORTING THE REGULATOR INPUT

RAISING THE OUTPUT VOLTAGE ABOVE THE INPUT VOLTAGE

TRANSIENT VOLTAGES

HEATSINKING DDPAK/TO-263 AND SOT-223 PACKAGE PARTS

Typical Applications

REVISION HISTORY