A1242 Просмотр технического описания (PDF) - Allegro MicroSystems
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A1242 Datasheet PDF : 11 Pages
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A1242
Two-Wire Chopper-Stabilized Hall Effect Latch
THERMAL CHARACTERISTICS may require derating at maximum conditions, see application information
Characteristic
Package Thermal Resistance
Symbol
RθJA
Test Conditions*
Package LH, minimum-K PCB (single layer, single-sided with
copper limited to solder pads)
Package LH, low-K PCB (single layer, double-sided with
0.926 in2 copper area)
Package UA, minimum-K PCB (single layer, single-sided with
copper limited to solder pads)
*Additional information available on the Allegro Web site.
Power Derating Curve
TJ(max) = 165°C; ICC = ICC(max)
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
Low-K PCB, Package LH
9
8
7
(R JA = 110 °C/W)
Minimum-K PCB, Package UA
6 (R JA = 165 °C/W)
5
4
Minimum-K PCB, Package LH
3
2
(R JA = 228 °C/W)
20 40 60 80 100 120 140 160
Temperature (°C)
VCC(max)
VCC(min)
180
Power Dissipation versus Ambient Temperature
1900
1800
1700
1600
1500
1400
1300
1200
1100
1000
900
800
700
600
500
400
300
200
100
0
Low-K PCB, Package LH
(R JA = 110 °C/W)
Min-K PCB, Package UA
(R JA = 165 °C/W)
Min-K PCB, Package LH
(R JA = 228 °C/W)
20 40 60 80 100 120 140 160 180
Temperature (°C)
Value Units
228 ºC/W
110 ºC/W
165 ºC/W
A1242-DS
Allegro MicroSystems, Inc.
4
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
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