L4955V5.1

0

2 .5

5

7 .5

10

12.5

15

17.5

0

1

2

3

4

5

6

7

8

(V in - Vou t) [V ]

O ut put C u rr e nt [A ]

C u rre nt L im itatio n

Vou t = 5.1V

T j = 125

°C

Pow er D iss ip a ti o n Lim it

Rd so n

lim it

DC O pe ratin g A re a

Tc = 2 5

°C

Pd m a x = 4 0W

Tc = 70

°C

Pdm a x = 2 2W

Figure 29: DC operating area.

-4 0

0

40

80

12 0

1 60

4.9

4.95

5

5.05

5.1

5.15

5.2

Tj [

°C]

Vout [V]

Vin = 8V

Iout = 1 0mA

Figure 30: Output Voltage Stability vs. Junction

Temperature.

-40

-20

0

20

40

60

80

100

1 20

140

160

0

0.2 5

0.5

0.7 5

1

1.2 5

1.5

1.7 5

2

2.2 5

2.5

2.7 5

3

Tj [

°C]

Iq [mA]

Vin = 8V

Iout = 10m A to 5A

Figure 31: Quiescent Current vs. Temperature.

01

23

4

5

-10

-8

-6

-4

-2

0

2

4

6

8

10

Io u t [A]

Vin = 8 V

Tj = 2 5

° C

( P uls e d tec n iq u e h as be en us ed )

Figure 32: Load Regulation

-40

-20

0

20

40

60

80

100 120 140 160

0

0.5

1

1.5

2

2.5

3

3.5

4

4.5

5

Tj [

°C]

6.5V < Vin < 15V

Iout = 10mA

Figure 33: Line regulation vs. Junction Tempera-

ture.

*P ulsed tecnique ha s been used

-4 0 -20

0

2 0

4 0

6 0

8 0

100 120 140 160

0

1

2

3

4

5

6

7

8

9

10

Tj [

°C]

O utp ut C urre n t [A]

(Vin-Vout) > 2 V

pin 2 = G ND

Figure 34: Maximum OutputCurrent vs. Junction

Temperaturewith internalcurrent limiting

L4955

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