A1140/41/42/43
Sensitive Two-Wire Chopper-Stabilized Unipolar Hall Effect Switches
THERMAL CHARACTERISTICS may require derating at maximum conditions, see application information
Characteristic
Symbol
Test Conditions
Package LH, minimum-K PCB (single-sided with
copper limited to solder pads)
Package LH, low-K PCB (double-sided with
0.926 in
2
copper area)
Package UA, minimum-K PCB (single-sided with
copper limited to solder pads)
Min.
110
228
165
Typ.
–
–
–
Max Units
–
–
–
ºC/W
ºC/W
ºC/W
Package Thermal Resistance
R
θJA
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
20
Power Derating Curve
T
J(max)
= 165ºC; I
CC
= I
CC(max)
V
CC(max)
Maximum Allowable V
CC
(V)
Low-K PCB, Package LH
(R
θJA
= 110 ºC/W)
Minimum-K PCB, Package UA
(R
θJA
= 165 ºC/W)
Minimum-K PCB, Package LH
(R
θJA
= 228 ºC/W)
V
CC(min)
140
160
180
40
60
80
100
120
1900
1800
1700
1600
1500
1400
1300
1200
1100
1000
900
800
700
600
500
400
300
200
100
0
20
Maximum Power Dissipation, P
D(max)
T
J(max)
= 165ºC; V
CC
= V
CC(max)
; I
CC
= I
CC(max)
Power Dissipation, P
D
(m W)
Lo
(R w-K
PC
θ
J
A
=
11 B, P
0 º ac
Min
C/ ka
W ge
(R imum
)
LH
-K
θ
JA
=
165 PCB
, Pa
ºC/
cka
W)
ge
UA
Min
imu
m-K
(R
P
θ
JA
=
228 CB, Pa
ºC/W
ckag
e LH
)
40
60
80
100
120
Temperature (°C)
140
160
180
A1140-DS
Allegro MicroSystems, Inc.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
5
ALLEGRO [ ALLEGRO MICROSYSTEMS ]
