A1140 Datasheet, PDF (5/11 Pages) Allegro MicroSystems – Sensitive Two-Wire Chopper-Stabilized Unipolar Hall-Effect Switches

A1140/41/42/43
Sensitive Two-Wire Chopper-Stabilized Unipolar Hall Effect Switches
THERMAL CHARACTERISTICS may require derating at maximum conditions, see application information
Characteristic
Package Thermal Resistance
Symbol
R_θJA
Test Conditions
Package LH, minimum-K PCB (single-sided with
copper limited to solder pads)
Package LH, low-K PCB (double-sided with
0.926 in² copper area)
Package UA, minimum-K PCB (single-sided with
copper limited to solder pads)
Min. Typ. Max Units
110 – – ºC/W
228 – – ºC/W
165 – – ºC/W
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
20
1900
1800
1700
1600
1500
1400
1300
1200
1100
1000
900
800
700
600
500
400
300
200
100
0
20
Power Derating Curve
T_J(max) = 165ºC; I_CC = I_CC(max)
V_CC(max)
Low-K PCB, Package LH
(R_θJA = 110 ºC/W)
Minimum-K PCB, Package UA
(R_θJA = 165 ºC/W)
Minimum-K PCB, Package LH
(R_θJA = 228 ºC/W)
V_CC(min)
40 60 80 100 120 140 160 180
Maximum Power Dissipation, P_D(max)
T_J(max) = 165ºC; V_CC = V_CC(max); I_CC = I_CC(max)
(RM_θⁱ_Jⁿ_A^{im=(uR1Lmθ}₆^JoA_{5-wK=-ºKCP1P/C1W0CB)Bº,C,P/PWaac)ckkaaggee}
LH
UA
(RM_θⁱ_Jⁿ_A^{im=u2m2-8KºPCC/WB),} _{Package LH}
40 60 80 100 120 140 160 180
Temperature (°C)
A1140-DS
Allegro MicroSystems, Inc.
5
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 [phone]
www.allegromicro.com