A3340 Datasheet, PDF (4/9 Pages) Allegro MicroSystems – Chopper-Stabilized, Precision Hall-Effect Switch

A3340
Chopper-Stabilized, Precision Hall-Effect Switch
THERMAL CHARACTERISTICS may require derating at maximum conditions, see application information
Characteristic
Package Thermal Resistance
Symbol
R_θJA
Test Conditions
Package LH, 1-layer PCB with copper limited to solder pads
Package LH, 2-layer PCB with 0.463 in.² of copper area each
side connected by thermal vias
Package UA, 1-layer PCB with copper limited to solder pads
Value Units
228 ºC/W
110 ºC/W
165 ºC/W
Power Derating Curve
T_J(max) = 165ºC; I_CC = I_CC(max)
25
24
23
22
21
20
19
18
17
16
15
14
13
12
Package LH, 2-layer PCB
11
(R_QJA = 110 ºC/W)
10
9
Package UA, 1-layer PCB
8
(R_QJA = 165 ºC/W)
7
6
Package LH, 1-layer PCB
5
(R_QJA = 228 ºC/W)
4
3
2
V_CC(max)
V_CC(min)
20 40 60 80 100 120 140 160 180
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
20
(RP_Q^a_JA^ck=a(Rg1PQ_e6^JaA_{5Uck=ºAaC1,g/11eW0-Ll)aºHCy,/eW2r-l)PayCeBr} PCB
(RP_Q^a_J^c_A^{k=ag2e2L8HºC,} _{1/W-la)yer PCB}
40 60 80 100 120 140 160 180
Temperature (°C)
Allegro MicroSystems, Inc.
4
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 [phone]
www.allegromicro.com