A1184_11 Datasheet, PDF (3/15 Pages) Allegro MicroSystems – The A1184 device is a standard, two-wire, unipolar, Hall effect switch.

A1184
Standard Two-Wire Field-Programmable
Chopper-Stabilized Unipolar Hall Effect Switch
Description (continued)
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.
Selection Guide
Part Number
Packing¹
Mounting
A1184ELHLT-T 7-in. reel, 3000 pieces/reel
A1184EUA-T
Bulk, 500 pieces/bag
A1184LLHLT-T 7-in. reel, 3000 pieces/reel
A1184LUA-T
Bulk, 500 pieces/bag
1_{Contact Allegro for additional packing options.}
2_{South (+) magnetic fields must be of sufficient strength.}
Surface mount
SIP through hole
Surface mount
SIP through hole
Ambient, T_A
(°C)
–40 to 85
–40 to 150
Output
South (+) Field²
Supply Current at
Low Output, I_CC(L)
(mA)
High
5 to 6.9
Absolute Maximum Ratings
Characteristic
Supply Voltage
Reverse Supply Voltage
Magnetic Flux Density
Operating Ambient Temperature
Maximum Junction Temperature
Storage Temperature
Symbol
V_CC
V_RCC
B
T_A
T_J(max)
T_stg
Range E
Range L
Notes
Rating
28
–18
Unlimited
–40 to 85
–40 to 150
165
–65 to 170
Units
V
V
G
ºC
ºC
ºC
ºC
Allegro MicroSystems, Inc.
2
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com