A1121 ALLEGRO [Allegro MicroSystems], A1121 Datasheet - Page 5

• Manufacturer Part Number: A1121
• Description: Chopper Stabilized Precision Hall Effect Switches
• Manufacturer: ALLEGRO [Allegro MicroSystems]

A1120, A1121
and A1125
THERMAL CHARACTERISTICS may require derating at maximum conditions, see application information
Package Thermal Resistance
Characteristic
Chopper Stabilized Precision Hall Effect Switches
1900
1800
1700
1600
1500
1400
1300
1200
1100
1000
900
800
700
600
500
400
300
200
100
Symbol
0
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
R
20
θJA
Power Dissipation versus Ambient Temperature
40
40
Package LH, 2-layer PCB
(R
Package UA, 1-layer PCB
(R
Package LH, 1-layer PCB
(R
T
Package LH, 1-layer PCB with copper limited to solder pads
Package LH, 2-layer PCB with 0.463 in.
side connected by thermal vias
Package UA, 1-layer PCB with copper limited to solder pads
J(max)
60
JA
60
JA
JA
Power Derating Curve
= 110 ºC/W)
= 165 ºC/W)
= 228 ºC/W)
= 165ºC; I
80
Temperature (°C)
80
100
100
CC
= I
120
120
CC(max)
Test Conditions
140
140
160
160
180
2
180
of copper area each
V
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
V
CC(min)
CC(max)
Value Units
228
165
110
ºC/W
ºC/W
ºC/W
5