*P ulsed tecnique ha s been used

-4 0

-2 0

0

2 0

4 0

6 0

80

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 3: Maximum Output Current vs. Junction

Temperature

Vin > 2 . 8V

T j= 125C

Tc =2 5

°C

Pdm a x = 40 W

Rd s on

lim it

D C Operat in g A re a

P ow er D is s ip at ion Lim it

C u rre nt L im ita tio n

Tc = 70

°C

Pd m a x =2 2 W

012

3

456

78

0

1

2

3

4

5

6

7

8

( Vi n - Vout ) [ V ]

O u t put C u r r e n t [ A ]

Figure 4: DC Operating Area

0

10

20

30

40

50

60

70

80

90

10 0

F r equ en cy [ H z]

R ip p le R eject i o n [ dB ]

1k

10

1 0 0

1 0k

100k

V r ip p l e = 3V p- p V r ipp l e = 0 .5 V p - p

C i n= 2 2uF

Co u t= 2 2 u F

V out= 1 . 5 V

Vi n m in = 3 V

Io u t= 5 A

Figure 5: Ripple Rejection vs. Frequency

1.8

6.3

IOUT(A)

(V)

D98IN846A

Figure 6: Output Voltage vs. Output Current.

0

0 .2 0.4

0 .6 0.8

1

1.2 1 .4 1.6 1 .8

2

0

0.5

1

1.5

2

2.5

3

3.5

4

4.5

5

∆V= V in - Vo

Io [A ]

ma x im u m R o n l im i ts

Tj = 1 0 0

°C

Tj = 1 2 5

°C

Tj = 2 5

°C

Figure 7: Maximum Output Current vs. Drop-Out

Voltage

L4957

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