A1185LLHLT-T Allegro Microsystems Inc, A1185LLHLT-T Datasheet - Page 7

• Manufacturer Part Number: A1185LLHLT-T
• Description: IC SWITCH HALL EFFECT UNI SOT-23
• Manufacturer: Allegro Microsystems Inc
• Type: Unipolar Switchr

Specifications of A1185LLHLT-T

• Sensing Range: 10G ~ 60G Trip - Programmable, Fixed Release
• Voltage - Supply: 3.5 V ~ 24 V
• Current - Supply: 6.9mA
• Output Type: Digital, Open Collector
• Features: Programmable
• Operating Temperature: -40°C ~ 150°C
• Package / Case: SOT-23W
• Magnetic Type: Unipolar
• Operating Supply Voltage (min): 3.5V
• Operating Supply Voltage (typ): 5/9/12/15/18V
• Operating Supply Voltage (max): 24V
• Mag Sensor Operate Point (g): 60Gs
• Mag Sensor Hysteresis(g): 15Gs
• Package Type: SOT-23W
• Pin Count: 3
• Mounting: Surface Mount
• Operating Temp Range: -40C to 150C
• Operating Temperature Classification: Automotive
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output (max): -
• Lead Free Status / RoHS Status: Compliant, Lead free / RoHS Compliant

A1185
A1186
Operation
The output, I
field at the Hall element exceeds the operate point threshold,
B
point threshold, B
ences between the magnetic operate and release point is called
Figure 1. Alternative switching behaviors are available in the A118x device family. On the horizontal axis, the B+ direction indicates
increasing south polarity magnetic field strength, and the B– direction indicates decreasing south polarity field strength (including the
case of increasing north polarity).
OP
. When the magnetic field is reduced to below the release
CC
and
, of the A1185 switches low after the magnetic
I+
0
RP
B–
, the device output goes high. The differ-
(A) A1185
B
HYS
Chopper-Stabilized Unipolar Hall Effect Switches
Ultrasensitive Two-Wire Field-Programmable
B+
I
I
CC(H)
Functional Description
CC(L)
the hysteresis of the device, B
clean switching of the output even in the presence of external
mechanical vibration and electrical noise. The A1186 device
switches with opposite polarity for similar B
in comparison to the A1185 (see figure 1).
I+
0
B–
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
(B) A1186
HYS
B
HYS
. This built-in hysteresis allows
OP
B+
and B
I
I
CC(H)
CC(L)
RP
values,
6