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A3425EK-T

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20
Ultra-Sensitive Dual-Channel Quadrature
Hall-Effect Bipolar Switch
A3425
4
Allegro MicroSystems, Inc.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
OPERATING CHARACTERISTICS Valid over operating temperature ranges unless otherwise noted; typical data applies to
V
CC
= 12 V, and T
A
= 25ºC
Characteristic Symbol Test Conditions Min. Typ. Max Units
ELECTRICAL CHARACTERISTICS
Supply Voltage
1
V
CC
Operating; T
A
150°C 3.3 – 18 V
Output Leakage Current I
OUTPUT(OFF)
Either output – < 1 10 A
Output Rise Time t
r
C
LOAD
= 20 pF, R
LOAD
= 820 – 1.8 – s
Output Fall Time t
f
C
LOAD
= 20 pF, R
LOAD
= 820 – 1.2 – s
Supply Current
I
CC(OFF)
B < B
RP(A)
,B < B
RP(B)
– 3.5 6.0 mA
I
CC(ON)
B > B
OP(A)
,B > B
OP(B)
– 4.0 6.0 mA
Low Output Voltage V
OUTPUT(ON)
Both outputs; I
OUTPUT(SINK)
= 20 mA; B > B
OP(A)
,
B > B
OP(B)
– 160 500 mV
Output Sink Current I
OUTPUT(SINK)
– – 20 mA
Output Sink Current, Continuous
2
I
OUTPUT(SINK)C
T
J
< T
J(max)
,V
OUTPUT
= 12 V – – 70 mA
Output Sink Current, Peak
3
I
OUTPUT(SINK)P
t < 3 seconds – – 220 mA
Chopping Frequency f
C
– 340 – kHz
TRANSIENT PROTECTION CHARACTERISTICS
Supply Zener Voltage V
Z
I
CC
= 15 mA 28 33 37 V
Supply Zener Current
4
I
Z
V
S
= 28 V – – 9.0 mA
Reverse-Battery Current I
RCC
V
RCC
= –18 V, T
J
< T
J(max)
– 2 15 mA
Continued on the next page...
Ultra-Sensitive Dual-Channel Quadrature
Hall-Effect Bipolar Switch
A3425
5
Allegro MicroSystems, Inc.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
MAGNETIC CHARACTERISTICS, K Package
5
Operate Point: B > B
OP
B
OP(A)
, B
OP(B)
– 7 35 G
Release Point: B < B
RP
B
RP(A)
, B
RP(B)
–35 –7 – G
Hysteresis: B
OP(A)
– B
RP(A)
,
B
OP(B)
– B
RP(B)
B
HYS(A)
, B
HYS(B)
51640 G
Symmetry: Channel A, Channel B,
B
OP(A)
+ B
RP(A)
,
B
OP(B)
+ B
RP(B)
SYM
A
, SYM
B
–40 – 40 G
Operate Symmetry: B
OP(A)
– B
OP(B)
SYM
AB(OP)
–30 – 30 G
Release Symmetry: B
RP(A)
– B
RP(B)
SYM
AB(RP)
–30 – 30 G
MAGNETIC CHARACTERISTICS, L Package
5
Operate Point: B > B
OP
B
OP(A)
, B
OP(B)
– 7 30 G
Release Point: B < B
RP
B
RP(A)
, B
RP(B)
–30 –7 – G
Hysteresis: B
OP(A)
– B
RP(A)
,
B
OP(B)
– B
RP(B)
B
HYS(A)
, B
HYS(B)
51435 G
Symmetry: Channel A, Channel B,
B
OP(A)
+ B
RP(A)
,
B
OP(B)
+ B
RP(B)
SYM
A
, SYM
B
–35 – 35 G
Operate Symmetry: B
OP(A)
– B
OP(B)
SYM
AB(OP)
–25 – 25 G
Release Symmetry: B
RP(A)
– B
RP(B)
SYM
AB(RP)
–25 – 25 G
1
When operating at maximum voltage, never exceed maximum junction temperature, T
J(max)
. Refer to power derating curve charts.
2
Device will survive the current level specifi ed, but operation within magnetic specifi cation cannot be guaranteed.
3
Short circuit of the output to VCC is protected for the time duration specifi ed.
4
Maximum specifi cation limit is equivalent to I
CC(max)
+ 3 mA.
5
Magnetic fl ux density, B, is indicated as a negative value for north-polarity magnetic fi elds, and as a positive value for south-polarity
magnetic fi elds. This so-called algebraic convention supports arithmetic comparison of north and south polarity values, where the
relative strength of the fi eld is indicated by the absolute value of B, and the sign indicates the polarity of the fi eld (for example, a
–100 G fi eld and a 100 G fi eld have equivalent strength, but opposite polarity).
OPERATING CHARACTERISTICS (continued) Valid over operating temperature ranges unless otherwise noted; typical
data applies to V
CC
= 12 V, and T
A
= 25ºC
Characteristic Symbol Test Conditions Min. Typ. Max Units
EMC
Contact Allegro MicroSystems for EMC performance.
Ultra-Sensitive Dual-Channel Quadrature
Hall-Effect Bipolar Switch
A3425
6
Allegro MicroSystems, Inc.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
THERMAL CHARACTERISTICS may require derating at maximum conditions, see application information
Characteristic Symbol Test Conditions* Value Units
Package Thermal Resistance
R
θJA
Package K, 1-layer PCB with copper limited to solder pads 177 ºC/W
Package L-8 pin, 1-layer PCB with copper limited to solder pads 140 ºC/W
Package L-8 pin, 4-layer PCB based on JEDEC standard 80 ºC/W
*Additional thermal data available on the Allegro Web site.
6
7
8
9
2
3
4
5
10
11
12
13
14
15
16
17
18
19
20
20 40 60 80 100 120 180140 160
Temperature (ºC)
Maximum Allowable V
CC
(V)
Power Derating Curve
(R
θJA
= 140 ºC/W)
Package L, 1-layer PCB
(R
θJA
= 177 ºC/W)
Package K, 1-layer PCB
(R
θJA
= 80 ºC/W)
Package L, 4-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, T
A
(°C)
Power Dissipation, P
D
(mW)
Power Dissipation versus Temperature
(R
θ
JA
=
140
º
C/W)
Package L, 1
-
l
a
yer PCB
(R
θJA
= 17
7 ºC/W)
Package
K, 1-l
a
yer
P
CB
(R
θJA
= 80 ºC/W)
Pa
ckage L,
4-layer PCB
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20

A3425EK-T

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MAGNETIC SWITCH BIPOLAR 4SIP
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