A3245 ALLEGRO [Allegro MicroSystems], A3245 Datasheet - Page 7

• Manufacturer Part Number: A3245
• Description: Chopper-Stabilized Omnipolar Hall-Effect Switches
• Manufacturer: ALLEGRO [Allegro MicroSystems]

THERMAL CHARACTERISTICS may require derating at maximum conditions, see application information
A3245-DS, Rev. 1
Package Thermal Resistance
Characteristic
Chopper-Stabilized Omnipolar Hall Effect Switches
1900
1800
1700
1600
1500
1400
1300
1200
1100
1000
900
800
700
600
500
400
300
200
100
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
0
20
20
Symbol
R
Power Dissipation versus Ambient Temperature
θJA
2-layer PCB, Package LH
(R
40
40
θJA
1-layer PCB, Package UA
(R
= 228 °C/W)
1-layer PCB, Package LH
θJA
(R
60
60
Package LH-3, 1-layer PCB with copper limited to
solder pads
Package LH-3, 2-layer PCB with 0.926 in
side, connected by thermal vias
Package UA, 1-layer PCB with copper limited to
solder pads
= 165 °C/W)
θJA
A3245
Power Derating Curve
= 110 °C/W)
Temperature (°C)
80
Temperature (°C)
80
100
100
Test Conditions
120
120
140
140
160
160
180
180
Allegro MicroSystems, Inc.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 [phone]
www.allegromicro.com
V
V
2
CC(max)
CC(min)
on each
Value
110
228
165
Units
ºC/W
ºC/W
ºC/W
7