L4957AD3.3 datasheet(7/12 Pages) STMICROELECTRONICS

Il numero della parte	L4957AD3.3

Spiegazioni elettronici	Up to 5A ULDO linear regulator

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Produttore elettronici	STMICROELECTRONICS [STMicroelectronics]

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L4957A

Electrical characteristics

7/12

Figure 4.

Line regulation vs. junction

temperature

Figure 5.

Load regulation

Figure 6.

Maximum output current vs.

junction temperature

Figure 7.

DC operating area

-4 0 -20

2 0

4 0

6 0

8 0 1 0 0 12 0 1 40 1 6 0

0.5

1.5

2.5

3.5

4.5

T j [° C ]

3V < V in < 6.5 V

Io ut = 10 m A

-5

-4

-3

-2

-1

Io u t [A ]

Vin = 5 V

T j = 25 °C

( P uls e d te c h n ique has be en u s ed)

V out = 1.5V

* P ulse d te c n iq u e h a s be en use d

-4 0 -20

2 0

4 0

6 0

8 0 100 120 140 16 0

T j [° C ]

O utput C u rre nt [A ]

(V in -V out) > 2V

pin 2 = G N D

V i n> 2 .8V

Tj = 1 2 5 °C

Tc =2 5 ° C

Pd m a x = 4 0 W

Rd s o n

l im it

D C O p e rati n g A rea

P o w e r D i ssip a tio n L im it

C u rre n t L im ita tio n

Tc = 7 0 ° C

Pd m a x = 2 2 W

012345

(V in - V o u t) [V ]

O u tp u t C u r re n t [A ]

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