A1225, A1227
and A1229
Hall Effect Latch for High Temperature Operation
THERMAL CHARACTERISTICS may require derating at maximum conditions, see application information
Characteristic
Symbol
Test Conditions*
Value
Units
Package LT, 1-layer PCB with copper limited to solder pads
180
ºC/W
Package LT, 2-layer PCB with 0.94 in2 copper each side
Package UA, 1-layer PCB with copper limited to solder pads
78
ºC/W
ºC/W
RθJA
Package Thermal Resistance
165
*Additional thermal information available on Allegro website.
Power Derating Curve
25
24
23
V
CC(max)
22
21
20
19
18
17
16
15
14
13
12
11
10
9
1-layer PCB, Package LT
(RθJA = 180 ºC/W)
1-layer PCB, Package UA
(RθJA = 165 ºC/W)
2-layer PCB, Package LT
(RθJA = 78 ºC/W)
8
7
6
5
4
V
CC(min)
3
2
20
40
60
80
100
120
140
160
180
T
(ºC)
A
Power Dissipation
1900
1800
1700
1600
1500
1400
1300
1200
1100
1000
900
800
700
600
500
400
300
200
100
0
20
40
60
80
100
120
140
160
180
Temperature (°C)
Allegro MicroSystems, Inc.
115 Northeast Cutoff
4
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
SANKEN [ SANKEN ELECTRIC ]
