Datasheet LM2940T-5.0 Specification

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Page 1

LM2940,LM2940C

LM2940/LM2940C 1A Low Dropout Regulator

Literature Number: SNVS769H

Page 2

LM2940/LM2940C 1A Low Dropout Regulator

General Description

The LM2940/LM2940C positive voltage regulator features the ability to source 1A of output current with a dropout voltage of typically 0.5V and a maximum of 1V over the entire temperature range. Furthermore, a quiescent current reduction circuit has been included which reduces the ground current when the differential between the input voltage and the output voltage exceeds approximately 3V. The quiescent current with 1A of output current and an input-output differential of 5V is therefore only 30 mA. Higher quiescent currents only exist when the regulator is in the dropout mode (VIN − V

Designed also for vehicular applications, the LM2940/ LM2940C and all regulated circuitry are protected from reverse battery installations or 2-battery jumps. During line transients, such as load dump when the input voltage can momentarily exceed the specified maximum operating volt-

OUT

≤ 3V).

January 2007

age, the regulator will automatically shut down to protect both the internal circuits and the load. The LM2940/LM2940C cannot be harmed by temporary mirror-image insertion. Familiar regulator features such as short circuit and thermal overload protection are also provided.

Features

Dropout voltage typically 0.5V @IO = 1A

■

Output current in excess of 1A

■

Output voltage trimmed before assembly

■

Reverse battery protection

■

Internal short circuit current limit

■

Mirror image insertion protection

■

P+ Product Enhancement tested

■

LM2940/LM2940C 1A Low Dropout Regulator

Typical Application

*Required if regulator is located far from power supply filter.

**C

must be at least 22 μF to maintain stability. May be increased without bound to maintain regulation during transients. Locate as close as possible to

OUT

the regulator. This capacitor must be rated over the same operating temperature range as the regulator and the ESR is critical; see curve.

882203

Ordering Information

Temp

Range

0°C

≤ T

≤

125°C

−40°C

≤ T

≤

125°C

−40°C

≤ T

≤

125°C

5.0 8.0 9.0 10 12 15

LM2940CT-5.0

LM2940CS-5.0

LM2940CSX

-5.0

LM2940LD-5.0 LM2940LD-8.0 LM2940LD-9.0 LM2940LD-10 LM2940LD-12 LM2940LD-15

LM2940LDX

-5.0

LM2940T-5.0 LM2940T-8.0 LM2940T-9.0 LM2940T-10 LM2940T-12

LM2940S-5.0 LM2940S-8.0 LM2940S-9.0 LM2940S-10 LM2940S-12

LM2940SX-5.0 LM2940SX-8.0 LM2940SX-9.0 LM2940SX-10 LM2940SX-12

–

LM2940LDX

-8.0

LM2940CT-9.0

LM2940CS-9.0

Output Voltage

LM2940CSX

-9.0

LM2940LDX

-9.0

–

LM2940LDX

-10

LM2940CT-12 LM2940CT-15 TO-220

LM2940CS-12 LM2940CS-15

LM2940CSX

-12

LM2940LDX

-12

LM2940CSX

-15

LM2940LDX

-15

–

Package

TO-263

LLP

1k Units

Tape and

Reel

LLP

4.5k

Units

Tape and

Reel

TO-220

TO-263

Page 3

Temp

Range

−40°C

≤ T

≤

85°C

LM2940/LM2940C

Marking L53B L54B L0EB L55B L56B L70B

The physical size of the SOT-223 is too small to contain the full device part number. The package markings indicated are what will appear on the actual device.

5.0 8.0 9.0 10 12 15

LM2940IMP-5.0 LM2940IMP-8.0 LM2940IMP-9.0 LM2940IMP-10 LM2940IMP-12 LM2940IMP-15 SOT-223

LM2940IMPX

-5.0

LM2940IMPX

-8.0

Output Voltage

LM2940IMPX

-9.0

LM2940IMPX

-10

LM2940IMPX

-12

LM2940IMPX

-15

Mil-Aero Ordering Information

Package

SOT-223

in Tape

and Reel

Temperature

Range

−55°C

≤ T

≤

125°C

For information on military temperature range products, please go to the Mil/Aero Web Site at http://www.national.com/appinfo/milaero/index.html.

LM2940WG5.0/883

5.0 8.0 12 15

LM2940J-5.0/883 5962-8958701EA

5962-8958701XA

Output Voltage

–

LM2940J-12/883

5962-9088401QEA

LM2940J-15/883

5962-9088501QEA

LM2940WG5-12/883 LM2940WG5-15/883 WG16A

Connection Diagrams

TO-220 (T) Plastic Package

Front View

882202

See NS Package Number TO3B

16-Lead Dual-in-Line Package (J)

16-Lead Ceramic Surface-Mount Package (WG)

SOT-223 (MP) 3-Lead

Front View

882242

See NS Package Number MP04A

Package

J16A

Top View

882243

See NS Package Number J16A

TO-263 (S) Surface-Mount Package

Top View

Side View

882211

882212

See NS Package Number TS3B

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See NS Package Number WG16A

Top View

LLP (LD) 8-Lead

Pin 2 and pin 7 are fused to center DAP

Pin 5 and 6 need to be tied together on PCB board

Top View

See NS Package Number LDC08A

882244

882246

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LM2940/LM2940C

Absolute Maximum Ratings (Note 1)

If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/

SOT-223 (MP) 260°C, 30s LLP-8 (LD) 235°C, 30s ESD Susceptibility (Note 4) 2 kV

Distributors for availability and specifications.

LM2940S, J, WG, T, MP ≤ 100 ms

LM2940CS, T ≤ 1 ms

60V

45V

Internal Power Dissipation

(Note 2)

Internally Limited Maximum Junction Temperature 150°C

Storage Temperature Range

−65°C ≤ TJ ≤ +150°C

Soldering Temperature (Note 3) TO-220 (T), Wave 260°C, 10s

Operating Conditions (Note 1)

Input Voltage 26V Temperature Range

LM2940T, LM2940S

LM2940CT, LM2940CS

LM2940IMP

LM2940J, LM2940WG

LM2940LD

−40°C ≤ TJ ≤ 125°C 0°C ≤ TJ ≤ 125°C

−40°C ≤ TA ≤ 85°C

−55°C ≤ TJ ≤ 125°C

−40°C ≤ TJ ≤ 125°C

TO-263 (S) 235°C, 30s

Electrical Characteristics

VIN = VO + 5V, IO = 1A, CO = 22 μF, unless otherwise specified. Boldface limits apply over the entire operating temperature range of the indicated device. All other specifications apply for TA = TJ = 25°C.

Output Voltage (VO) 5V 8V

LM2940 LM2940/883 LM2940 LM2940/883

Parameter Conditions Typ Limit Limit Typ Limit Limit

Output Voltage

5 mA ≤ IO ≤ 1A

(Note 5) (Note 6)

6.25V ≤ VIN ≤ 26V 9.4V ≤ VIN ≤ 26V

5.00 4.85/4.75 4.85/4.75 8.00 7.76/7.60 7.76/7.60

(Note 5) (Note 6)

5.15/5.25 5.15/5.25 8.24/8.40 8.24/8.40 V

Line Regulation

VO + 2V ≤ VIN ≤ 26V,

20 50 40/50 20 80 50/80

IO = 5 mA

Load Regulation

50 mA ≤ IO ≤ 1A

LM2940, LM2940/883 35 50/80 50/100 55 80/130 80/130 mV

LM2940C 35 50 55 80

Output 100 mADC and

Impedance 20 mArms, 35 1000/1000 55 1000/1000

fO = 120 Hz

Quiescent

VO +2V ≤ VIN ≤ 26V,

Current IO = 5 mA

LM2940, LM2940/883 10 15/20 15/20 10 15/20 15/20 mA

LM2940C 10 15

VIN = VO + 5V,

30 45/60 50/60 30 45/60 50/60

IO = 1A

Output Noise 10 Hz − 100 kHz,

150

700/700 240

1000/1000

Voltage IO = 5 mA

Ripple Rejection fO = 120 Hz, 1 V

rms

IO = 100 mA

LM2940 72 60/54 66 54/48 dB

LM2940C 72 60 66 54

fO = 1 kHz, 1 V

rms

60/50

54/48

IO = 5 mA

Long Term 20 32 mV/

Stability 1000 Hr

Dropout Voltage IO = 1A 0.5 0.8/1.0 0.7/1.0 0.5 0.8/1.0 0.7/1.0 V

IO = 100 mA 110 150/200 150/200 110 150/200 150/200 mV

Units

MIN

MAX

mΩ

μV

MAX

rms

MIN

MAX

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Output Voltage (VO) 5V 8V

LM2940 LM2940/883 LM2940 LM2940/883

Parameter Conditions Typ Limit Limit Typ Limit Limit

Short Circuit Current

LM2940/LM2940C

Maximum Line

Transient

Reverse Polarity

(Note 7)

RO = 100Ω LM2940, T ≤ 100 ms LM2940/883, T ≤ 20 ms LM2940C, T ≤ 1 ms

RO = 100Ω

(Note 5) (Note 6)

1.9 1.6 1.5/1.3 1.9 1.6 1.6/1.3

75 60/60 75 60/60

40/40 40/40

55 45 55 45

(Note 5) (Note 6)

DC Input Voltage LM2940, LM2940/883 −30 −15/−15 −15/−15 −30 −15/−15 −15/−15 V

LM2940C −30 −15 −30 −15

Reverse Polarity

Transient Input

Voltage

RO = 100Ω LM2940, T ≤ 100 ms LM2940/883, T ≤ 20 ms LM2940C, T ≤ 1 ms

−75 −50/−50 −75 −50/−50

−45/−45 −45/−45

−55 −45/−45

Electrical Characteristics

Output Voltage (VO) 9V 10V

LM2940

Parameter Conditions Typ

Limit Limit

Typ

(Note 5) (Note 5)

Output Voltage

5 mA ≤ IO ≤1A

10.5V ≤ VIN ≤ 26V 11.5V ≤ VIN ≤ 26V

9.00 8.73/8.55 10.00 9.70/9.50

9.27/9.45 10.30/10.50 V

Line Regulation

VO + 2V ≤ VIN ≤ 26V,

20 90 20 100

IO = 5 mA

Load Regulation

50 mA ≤ IO ≤ 1A

LM2940 60 90/150 65 100/165 mV

LM2940C 60 90

Output Impedance 100 mADC and

20 mArms, 60 65

fO = 120 Hz

Quiescent

VO +2V ≤ VIN < 26V,

Current IO = 5 mA

LM2940 10 15/20 10 15/20 mA

LM2940C 10 15

Output Noise 10 Hz − 100 kHz,

VIN = VO + 5V, IO = 1A 30 45/60 30 45/60 mA

270

300

Voltage IO = 5 mA

Ripple Rejection fO = 120 Hz, 1 V

rms

IO = 100 mA

LM2940 64 52/46 63 51/45 dB

LM2940C 64 52

Long Term Stability

1000 Hr

34 36 mV/

LM2940

Units

MIN

Units

MIN

MAX

mΩ

MAX

μV

rms

MIN

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Output Voltage (VO) 9V 10V

Parameter Conditions Typ

LM2940

Limit Limit

Typ

LM2940

Units

(Note 5) (Note 5)

Dropout Voltage IO = 1A 0.5 0.8/1.0 0.5 0.8/1.0 V

IO = 100 mA 110 150/200 110 150/200 mV

Short Circuit (Note 7)

1.9 1.6 1.9 1.6

Current

Maximum Line

Transient

RO = 100Ω T ≤ 100 ms

LM2940 75 60/60 75 60/60 V

LM2940C 55 45

Reverse Polarity

RO = 100Ω

DC Input Voltage LM2940 −30 −15/−15 −30 −15/−15 V

LM2940C −30 −15

Reverse Polarity

Transient Input

RO = 100Ω T ≤ 100 ms

Voltage LM2940 −75 −50/−50 −75 −50/−50 V

LM2940C −55 −45/−45

LM2940/LM2940C

MAX

MIN

Electrical Characteristics

Output Voltage (VO) 12V 15V

LM2940 LM2940/833 LM2940 LM2940/833

Parameter Conditions Typ Limit Limit Typ Limit Limit

Output Voltage

5 mA ≤ IO ≤1A

(Note 5) (Note 6)

13.6V ≤ VIN ≤ 26V 16.75V ≤ VIN ≤ 26V

12.00 11.64/11.40 11.64/11.40 15.00 14.55/14.25 14.55/14.25

(Note 5) (Note 6)

12.36/12.60 12.36/12.60 15.45/15.75 15.45/15.75 V

Line Regulation

VO + 2V ≤ VIN ≤ 26V,

20 120 75/120 20 150 95/150

IO = 5 mA

Load Regulation

50 mA ≤ IO ≤ 1A

LM2940, LM2940/883 55 120/200 120/190 150/240 mV

LM2940C 55 120 70 150

Output 100 mADC and

Impedance 20 mArms, 80 1000/1000 100 1000/1000

fO = 120 Hz

Quiescent Current

VO +2V ≤ VIN ≤ 26V,

IO = 5 mA

LM2940, LM2940/883 10 15/20 15/20 15/20 mA

LM2940C 10 15 10 15

VIN = VO + 5V, IO = 1A 30 45/60 50/60 30 45/60 50/60 mA

Output Noise 10 Hz − 100 kHz,

360

1000/1000 450

1000/1000

Voltage IO = 5 mA

Units

μV

MIN

MAX

mΩ

MAX

rms

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Output Voltage (VO) 12V 15V

LM2940 LM2940/833 LM2940 LM2940/833

Parameter Conditions Typ Limit Limit Typ Limit Limit

Ripple Rejection fO = 120 Hz, 1 V

LM2940/LM2940C

IO = 100 mA

LM2940 66 54/48 dB

rms

(Note 5) (Note 6)

LM2940C 66 54 64 52

fO = 1 kHz, 1 V

IO = 5 mA

Long Term

Stability 1000 Hr

rms

52/46

48/42

mV/

Dropout Voltage IO = 1A 0.5 0.8/1.0 0.7/1.0 0.5 0.8/1.0 0.7/1.0 V

Short Circuit (Note 7)

Current

Maximum Line

Transient

Reverse Polarity

IO = 100 mA 110 150/200 150/200 110 150/200 150/200 mV

1.9 1.6 1.6/1.3 1.9 1.6 1.6/1.3

RO = 100Ω LM2940, T ≤ 100 ms LM2940/883, T ≤ 20 ms LM2940C, T ≤ 1 ms

RO = 100Ω

75 60/60

40/40 40/40 V

55 45 55 45

DC Input LM2940, LM2940/883 −30 −15/−15 −15/−15 −15/−15 V

Voltage LM2940C −30 −15 −30 −15

Reverse Polarity

Transient Input

Voltage

RO = 100Ω LM2940, T ≤ 100 ms LM2940/883, T ≤ 20 ms LM2940C, T ≤ 1 ms

−75 −50/−50

−45/−45 −45/−45 V

−55 −45/−45 −55 −45/−45

Units

MIN

MAX

MIN

Thermal Performance

Thermal Resistance Junction-to-Case, θ

(JC)

Thermal Resistance Junction-to-Ambient, θ

Note 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 guaranteed. For guaranteed specifications and test conditions see the Electrical Characteristics.

Note 2: The maximum allowable power dissipation is a function of the maximum junction temperature, TJ, the junction-to-ambient thermal resistance, θJA, and the ambient temperature, TA. Exceeding the maximum allowable power dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown. The value of θJA (for devices in still air with no heatsink) is 60°C/W for the TO-220 package, 80°C/W for the TO-263 package, and 174°C/W for the SOT-223 package. The effective value of θJA can be reduced by using a heatsink (see Application Hints for specific information on heatsinking). The value of

θJA for the LLP package is specifically dependent on PCB trace area, trace material, and the number of layers and thermal vias. For improved thermal resistance

and power dissipation for the LLP package, refer to Application Note AN-1187. It is recommended that 6 vias be placed under the center pad to improve thermal performance.

Note 3: Refer to JEDEC J-STD-020C for surface mount device (SMD) package reflow profiles and conditions. Unless otherwise stated, the temperature and time are for Sn-Pb (STD) only.

Note 4: ESD rating is based on the human body model, 100 pF discharged through 1.5 kΩ.

Note 5: All limits are guaranteed at TA = TJ = 25°C only (standard typeface) or over the entire operating temperature range of the indicated device (boldface type).

All limits at TA = TJ = 25°C are 100% production tested. All limits at temperature extremes are guaranteed via correlation using standard Statistical Quality Control methods.

Note 6: All limits are guaranteed at TA = TJ = 25°C only (standard typeface) or over the entire operating temperature range of the indicated device (boldface type). All limits are 100% production tested and are used to calculate Outgoing Quality Levels.

Note 7: Output current will decrease with increasing temperature but will not drop below 1A at the maximum specified temperature.

(JA)

3-Lead TO-220 4

3-Lead TO-263 4

3-Lead TO-220 (Note 2) 60

3-Lead TO-263 (Note 2) 80

SOT-223(Note 2) 174

8-Lead LLP (Note 2) 35

°C/W

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Typical Performance Characteristics

LM2940/LM2940C

Dropout Voltage

Output Voltage vs. Temperature

882213

Dropout Voltage vs. Temperature

882214

Quiescent Current vs. Temperature

Quiescent Current

882215

882217

882216

Quiescent Current

882218

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LM2940/LM2940C

Line Transient Response

Load Transient Response

Ripple Rejection

Low Voltage Behavior

882219

882221

882220

Low Voltage Behavior

882225

Low Voltage Behavior

882226

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882227

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LM2940/LM2940C

Low Voltage Behavior

882228

Low Voltage Behavior

882229

Output at Voltage Extremes

882230

882232

882231

Output at Voltage Extremes

882233

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LM2940/LM2940C

Output at Voltage Extremes

Peak Output Current

882234

882236

882235

Output Capacitor ESR

882206

Output Impedance

882208

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882222

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LM2940/LM2940C

Maximum Power Dissipation (TO-220)

Maximum Power Dissipation (TO-263)

Maximum Power Dissipation (SOT-223)

882224

882223

882210

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Equivalent Schematic Diagram

LM2940/LM2940C

882201

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LM2940/LM2940C

Application Information

EXTERNAL CAPACITORS

The output capacitor is critical to maintaining regulator stability, and must meet the required conditions for both ESR (Equivalent Series Resistance) and minimum amount of capacitance.

MINIMUM CAPACITANCE: The minimum output capacitance required to maintain stabil-

ity is 22 μF (this value may be increased without limit). Larger values of output capacitance will give improved transient response.

ESR LIMITS: The ESR of the output capacitor will cause loop instability if it

is too high or too low. The acceptable range of ESR plotted versus load current is shown in the graph below. It is essen-

tial that the output capacitor meet these requirements, or oscillations can result.

Output Capacitor ESR

882206

FIGURE 1. ESR Limits

It is important to note that for most capacitors, ESR is specified only at room temperature. However, the designer must ensure that the ESR will stay inside the limits shown over the entire operating temperature range for the design.

For aluminum electrolytic capacitors, ESR will increase by about 30X as the temperature is reduced from 25°C to −40° C. This type of capacitor is not well-suited for low temperature operation.

Solid tantalum capacitors have a more stable ESR over temperature, but are more expensive than aluminum electrolytics. A cost-effective approach sometimes used is to parallel an aluminum electrolytic with a solid Tantalum, with the total capacitance split about 75/25% with the Aluminum being the larger value.

If two capacitors are paralleled, the effective ESR is the parallel of the two individual values. The “flatter” ESR of the Tantalum will keep the effective ESR from rising as quickly at low temperatures.

HEATSINKING

A heatsink may be required depending on the maximum power dissipation and maximum ambient temperature of the application. Under all possible operating conditions, the junction

temperature must be within the range specified under Absolute Maximum Ratings.

To determine if a heatsink is required, the power dissipated by the regulator, PD, must be calculated.

The figure below shows the voltages and currents which are present in the circuit, as well as the formula for calculating the power dissipated in the regulator:

IIN = IL + I

PD = (VIN − V

) IL + (VIN) I

OUT

882237

FIGURE 2. Power Dissipation Diagram

The next parameter which must be calculated is the maximum allowable temperature rise, T ing the formula:

. This is calculated by us-

R(MAX)

= T

J(MAX)

− T

A(MAX)

where: T

is the maximum allowable junction tempera-

J(MAX)

ture, which is 125°C for commercial grade parts.

A(MAX)

Using the calculated values for T allowable value for the junction-to-ambient thermal resistance, θ

(JA)

IMPORTANT: If the maximum allowable value for θ found to be ≥ 53°C/W for the TO-220 package, ≥ 80°C/W for

is the maximum ambient temperature which will be encountered in the application.

and PD, the maximum

R(MAX)

, can now be found:

(JA)

= T

R(MAX)

/ P

(JA)

the TO-263 package, or ≥ 174°C/W for the SOT-223 package, no heatsink is needed since the package alone will dissipate enough heat to satisfy these requirements.

If the calculated value for θ heatsink is required.

falls below these limits, a

(JA)

HEATSINKING TO-220 PACKAGE PARTS

The TO-220 can be attached to a typical heatsink, or secured to a copper plane on a PC board. If a copper plane is to be used, the values of θ section for the TO-263.

will be the same as shown in the next

(JA)

If a manufactured heatsink is to be selected, the value of heatsink-to-ambient thermal resistance, θ calculated:

, must first be

(H−A)

= θ

(H−A)

(JA)

− θ

(C−H)

− θ

(J−C)

Where: θ

is defined as the thermal resistance from the

(J−C)

junction to the surface of the case. A value of 3°C/W can be assumed for θ culation.

(J−C)

for this cal-

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Page 15

is defined as the thermal resistance between

(C−H)

the case and the surface of the heatsink. The value of θ about 2.5°C/W (depending on method of at-

will vary from about 1.5°C/W to

(C−H)

tachment, insulator, etc.). If the exact value is unknown, 2°C/W should be assumed for θ

LM2940/LM2940C

When a value for θ

heatsink must be selected that has a value that is less than

−H)

is found using the equation shown, a

(H−A)

or equal to this number.

is specified numerically by the heatsink manufacturer

(H−A)

in the catalog, or shown in a curve that plots temperature rise vs power dissipation for the heatsink.

HEATSINKING TO-263 PACKAGE PARTS

The TO-263 (“S”) package uses 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 package to the plane.

Figure 3 shows for the TO-263 the measured values of θ for different copper area sizes using a typical PCB with 1 ounce copper and no solder mask over the copper area used

for heatsinking.

(JA)

882239

FIGURE 4. Maximum Power Dissipation vs. TA for the

TO-263 Package

HEATSINKING SOT-223 PACKAGE PARTS

The SOT-223 (“MP”) 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 package to the plane.

Figure 5 and Figure 6 show the information for the SOT-223 package. Figure 6 assumes a θ inch of 1 ounce copper and 51°C/W for 1 square inch of 2

of 74°C/W for 1 square

(JA)

ounce copper, with a maximum ambient temperature (TA) of 85°C and a maximum junction temperature (TJ) of 125°C.

For techniques for improving the thermal resistance and power dissipation for the SOT-223 package, please refer to Application Note AN-1028.

882238

FIGURE 3. θ

vs. Copper (1 ounce) Area for the TO-263

(JA)

Package

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 package mounted to a PCB is 32°C/W.

for the TO-263

(JA)

As a design aid, Figure 4 shows the maximum allowable power dissipation compared to ambient temperature for the TO-263 device. This assumes a θ inch of 1 ounce copper and a maximum junction temperature

of 35°C/W for 1 square

(JA)

(TJ) of 125°C.

FIGURE 5. θ

882240

vs. Copper (2 ounce) Area for the SOT-223

(JA)

Package

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882241

LM2940/LM2940C

HEATSINKING LLP PACKAGE PARTS

The value of θJA for the LLP package is specifically dependent on PCB trace area, trace material, and the number of layers and thermal vias. It is recommended that a minimum of 6 thermal vias be placed under the center pad to improve thermal performance.

For techniques for improving the thermal resistance and power dissipation for the LLP package, please refer to Application Note AN-1187.

FIGURE 6. Maximum Power Dissipation vs. TA for the

SOT-223 Package

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Physical Dimensions inches (millimeters) unless otherwise noted

LM2940/LM2940C

3-Lead SOT-223 Package

NS Package Number MP04A

16 Lead Dual-in-Line Package (J)

See NS Package Number J16A

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16 Lead Surface Mount Package (WG)

See NS Package Number WG16A

LM2940/LM2940C

3-Lead TO-220 Plastic Package (T)

NS Package Number TO3B

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LM2940/LM2940C

3-Lead TO-263 Surface Mount Package (MP)

Order Number LM2940LD-5.0, LM2940LD-8.0,

NS Package Number TS3B

8-Lead LLP

LM2940LD-9.0, LM2940LD-10,

LM2940LD-12 or LM2940LD-15

NS Package Number LDC08A

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Notes

LM2940/LM2940C

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Notes

LM2940/LM2940C 1A Low Dropout Regulator

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