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A1244LLHLT-I1-T

P1-P3P4-P6P7-P9P10-P12
Chopper-Stabilized, Two-Wire
Hall-Effect Latch
A1244
4
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
Characteristic Symbol Test Conditions* Value Units
Package Thermal Resistance
R
θJA
Package LH, 1-layer PCB with copper limited to solder pads 228 ºC/W
Package LH, 2-layer PCB with 0.463 in.
2
of copper area each side
connected by thermal vias
110 ºC/W
Package UA, 1-layer PCB with copper limited to solder pads 165 ºC/W
*Additional thermal information available on Allegro Web site.
6
7
8
9
2
3
4
5
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
20 40 60 80 100 120 140 160 180
Temperature (ºC)
Maximum Allowable V
CC
(V)
Power Derating Curve
(R
θJA
= 228 ºC/W)
LH, 1-layer PCB
(R
θJA
= 110 ºC/W)
LH, 2-layer PCB
(R
θJA
= 165 ºC/W)
UA, 1-layer PCB
V
CC(min)
V
CC(max)
0
100
200
300
400
500
600
700
800
900
1000
1100
1200
1300
1400
1500
1600
1700
1800
1900
20 40 60 80 100 120 140 160 180
Temperature (°C)
Power Dissipation, P
D
(mW)
Power Dissipation versus Ambient Temperature
(R
θJA
= 165 ºC/W)
1-layer PCB, Package UA
(R
θJA
= 228 ºC/W)
1-layer PCB, Package LH
(R
θJA
= 110 ºC/W)
2-layer PCB, Package LH
Application Information
Chopper-Stabilized, Two-Wire
Hall-Effect Latch
A1244
5
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
Characteristic Performance
Supply Voltage, V
CC
(V)
Supply Current, I
CC(H)
(mA)
17
16
15
14
13
12
2 6 10 14 18 22 26
T
A
= 150°C
T
A
= –40°C
T
A
= 25°C
Average Supply Current (High) versus Supply Voltage
V
CC
= 3.0 V
V
CC
= 24 V
-60 -40 -20 0 20 40 60 80 100 140120 160
Ambient Temperature, T
A
(°C)
Supply Current, I
CC(H)
(mA)
17
16
15
14
13
12
Average Supply Current (High) versus Temperature
Supply Current, I
CC(L)
(mA)
Supply Voltage, V
CC
(V)
2 6 10 14 18 22 26
T
A
= 150°C
T
A
= –40°C
T
A
= 25°C
7.0
6.5
6.0
5.5
5.0
Average Supply Current (Low) versus Supply Voltage
V
CC
= 3.0 V
V
CC
= 24 V
7.0
6.5
6.0
5.5
5.0
-60 -40 -20 0 20 40 60 80 100 140120 160
Ambient Temperature, T
A
(°C)
Supply Current, I
CC(L)
(mA)
Average Supply Current (Low) versus Temperature
A1244-I1
A1244-I1,I2
A1244-I1
A1244-I1,I2
Chopper-Stabilized, Two-Wire
Hall-Effect Latch
A1244
6
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
Supply Voltage, V
CC
(V)
Applied Flux Density at
Switchpoint Hysteresis, B
HYS
(G)
110
100
90
80
70
60
50
40
2 6 10 14 18 22 26
T
A
= 150°C
T
A
= –40°C
T
A
= 25°C
Average Switchpoint Hysteresis versus Supply Voltage
V
CC
= 3.0 V
V
CC
= 24 V
Ambient Temperature, T
A
(°C)
-60 -40 -20 0 20 40 60 80 100 140120 160
110
100
90
80
70
60
50
40
Applied Flux Density at
Switchpoint Hysteresis, B
HYS
(G)
Ambient Temperature, T
A
(°C)
-60 -40 -20 0 20 40 60 80 100 140120 160
Average Switchpoint Hysteresis versus Temperature
Applied Flux Density at
Release Point, B
RP
(G)
Supply Voltage, V
CC
(V)
2 6 10 14 18 22 26
T
A
= 150°C
T
A
= –40°C
T
A
= 25°C
–5
–15
–25
–35
–45
–55
–65
–75
–85
Average Release Point versus Supply Voltage
V
CC
= 3.0 V
V
CC
= 24 V
-60 -40 -20 0 20 40 60 80 100 140120 160
Ambient Temperature, T
A
(°C)
Applied Flux Density at
Release Point, B
RP
(G)
–5
–15
–25
–35
–45
–55
–65
–75
–85
Average Release Point versus Temperature
T
A
= 150°C
T
A
= –40°C
T
A
= 25°C
85
75
65
55
45
35
25
15
5
2 6 10 14 18 22 26
Supply Voltage, V
CC
(V)
Applied Flux Density at
Operate Point, B
OP
(G)
Average Operate Point versus Supply Voltage
V
CC
= 3.0 V
85
75
65
55
45
35
25
15
5
-60 -40 -20 0 20 40 60 80 100 140120 160
Ambient Temperature, T
A
(°C)
Applied Flux Density at
Operate Point, B
OP
(G)
V
CC
= 24 V
Average Operate Point versus Temperature
A1244-I1,I2 A1244-I1,I2
A1244-I1,I2 A1244-I1,I2
A1244-I1,I2 A1244-I1,I2
P1-P3P4-P6P7-P9P10-P12

A1244LLHLT-I1-T

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Description:
Two-Wire Hall-Effect Latch
Lifecycle:
New from this manufacturer.
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