A1143LUA-T【PDF 7/15 页】IC SWITCH HALL EFFECT UNI 3-SIP

Sensitive Two-Wire Chopper-Stabilized

Unipolar Hall Effect Switches

A1140, A1142, and

A1143

6

Allegro MicroSystems, Inc.

115 Northeast Cutoff

Worcester, Massachusetts 01615-0036 U.S.A.

1.508.853.5000; www.allegromicro.com

THERMAL CHARACTERISTICS may require derating at maximum conditions, see application information

Characteristic

Symbol

Test Conditions*

Value Units

Package Thermal Resistance

R

窲A

Package LH, 1-layer PCB with copper limited to solder pads

228 篊/W

Package LH, 2-layer PCB with 0.463 in.

2

of copper area each side

connected by thermal vias

110 篊/W

Package UA, 1-layer PCB with copper limited to solder pads

165 篊/W

*Additional thermal information available on Allegro Web site.

6

7

8

9

2

3

4

5

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

20 40 60 80 100 120 140 160 180

Temperature (篊)

Power Derating Curve

(R

窲A

= 228 篊/W)

1-layer PCB, Package LH

(R

窲A

= 110 篊/W)

2-layer PCB, Package LH

(R

窲A

= 165 篊/W)

1-layer PCB, Package UA

V

CC(min)

V

CC(max)

0

100

200

300

400

500

600

700

800

900

1000

1100

1200

1300

1400

1500

1600

1700

1800

1900

20 40 60 80 100 120 140 160 180

Temperature (癈)

Power Dissipation versus Ambient Temperature

(R

?/DIV>

J

A

=

1

6

5

?/DIV>

C

/

W

)

1

-

la

y

e

r

P

C

B

,

P

a

c

k

a

g

e

U

A

(

R

?/DIV>

JA

=

2

8

?/DIV>

C

/

W

)

1

-l

a

y

e

r

P

C

B

,

P

a

c

k

a

g

e

L

H

(

R

?/DIV>

J

A

=

1

0

?/DIV>

C

/

W

)

2

-

l

a

y

e

r

P

C

B

,

P

a

c

k

a

g

e

L

H

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