Standard Two-Wire Field-Programmable
Chopper-Stabilized Unipolar Hall Effect Switch
A1184
2
Allegro MicroSystems, Inc.
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
Selection Guide
Part Number
Packing
1
Mounting
Ambient, T
A
(癈)
Output
South (+) Field
2
Supply Current at
Low Output, I
CC(L)
(mA)
A1184ELHLT-T 7-in. reel, 3000 pieces/reel Surface mount
40 to 85
High
5 to 6.9
A1184EUA-T
Bulk, 500 pieces/bag
SIP through hole
A1184LLHLT-T 7-in. reel, 3000 pieces/reel Surface mount
40 to 150
A1184LUA-T
Bulk, 500 pieces/bag
SIP through hole
1
Contact Allegro for additional packing options.
2
South (+) magnetic fields must be of sufficient strength.
of two narrowly-specified ranges. Any output current level outside
of these two ranges is a fault condition. The A1184 also features
on-chip transient protection, and a Zener clamp to protect against
overvoltage conditions on the supply line.
The output current of the A1184 switches HIGH in the presence of
a south polarity magnetic field of sufficient strength; and switches
LOW otherwise, including when there is no significant magnetic
field present.
Both devices are offered in two package styles: LH, a SOT-23W
miniature low-profile package for surface-mount applications, and
UA, a three-lead ultramini Single Inline Package (SIP) for through-
hole mounting. Each package is available in a lead (Pb) free version
(suffix, T) with 100% matte tin plated leadframe.
Factory-programmed versions are also available. Refer to: A1140,
A1141, A1142, A1143, A1145, and A1146.
Absolute Maximum Ratings
Characteristic
Symbol
Notes
Rating Units
Supply Voltage
V
CC
28
V
Reverse Supply Voltage
V
RCC
18
V
Magnetic Flux Density
B
Unlimited
G
Operating Ambient Temperature
T
A
Range E
40 to 85
篊
Range L
40 to 150 篊
Maximum Junction Temperature
T
J
(max)
165
篊
Storage Temperature
T
stg
65 to 170 篊
Description (continued)
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