A1244 ALLEGRO [Allegro MicroSystems], A1244 Datasheet - Page 4

• Manufacturer Part Number: A1244
• Description: Chopper-Stabilized, Two Wire Hall-Effect Latch
• Manufacturer: ALLEGRO [Allegro MicroSystems]

A1244
THERMAL CHARACTERISTICS may require derating at maximum conditions, see application information
Package Thermal Resistance
*Additional thermal information available on Allegro Web site.
Characteristic
Symbol
1900
1800
1700
1600
1500
1400
1300
1200
1100
1000
900
800
700
600
500
400
300
200
100
R
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
θJA
0
9
8
7
6
5
4
3
2
20
20
Power Dissipation versus Ambient Temperature
Application Information
40
40
Package LH, 1-layer PCB with copper limited to solder pads
Package LH, 2-layer PCB with 0.463 in.
connected by thermal vias
Package UA, 1-layer PCB with copper limited to solder pads
LH, 2-layer PCB
(R
60
JA
60
Power Derating Curve
UA, 1-layer PCB
(R
= 110 ºC/W)
JA
LH, 1-layer PCB
(R
80
Temperature (ºC)
= 165 ºC/W)
Temperature (°C)
80
JA
= 228 ºC/W)
100
100
120
120
Test Conditions*
Chopper-Stabilized, Two Wire
140
140
160
160
2
of copper area each side
180
180
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)
Hall-Effect Latch
Value Units
228
165
110
ºC/W
ºC/W
ºC/W
4