L4956 datasheet(4/8 Pages) STMICROELECTRONICS

4 / 8 page

Powe r

D issip a tio n

Lim it

1234

567

(V pw - Vout) [V ]

O u tput C urrent [A ]

Vpw > 3V

V s ig > 4.5 V

Tj = 1 25

° C

Tc = 2 5

° C

Pdm ax = 4 0 W

C u rre nt Lim ita ti o n

Rd s on

lim it

D C O pera ting A rea

Tc = 7 0

° C

Pdm ax =2 2 W

Figure 1. DC Operating Area.

-40

12 0

160

1.24

1.245

1.25

1.255

1.26

1.265

1.27

1.275

1.28

Tj [

°C]

Vo ut [V ]

V p w = 3.3V

Vsig = 5 V

I out = 1 0m A

Figure 2. Output Voltage Stability vs.

Junction Temperature

123

-5

-4

-3

-2

-1

Iou t [A ]

P u ls ed t e c n iq ue ha s been us ed

Vp w = 3 . 3 V

Vs i g = 5 V

Vo u t = Vadj

Tj = 2 5

°C

Figure 3. Load Regulation.

0.25

0.5

0.75

1.25

Iout [A ]

Tj = 125

°C

Tj = 2 5

°C

Tj = - 40

° C

P u ls ed te c hnique has been used

Figure 4. Dropout Voltage.

-4 0 -20

80 10 0 12 0 140 160

Tj [ºC ]

O u tput C u rre nt [A]

(V pw -Vout) > 2V

P u ls ed te cn iq ue ha s b e e n u sed

Figure 5. Maximum Output Current vs.

Junction Temperature

-4 0

-2 0

10 0 120 14 0 16 0

0.4

0.6

0.8

1.2

1.4

1.6

1.8

Tj [

°C]

Iq [m A ]

V SIG =6 . 5 V

I out = 1 0 m A to 5 A

3 V <V P W <6 .5 V

Figure 6. Quiescent Current at pin VSIG vs.

Junction Temperature.

L4956

4/8

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