A3240LLTTR Allegro Microsystems Inc, A3240LLTTR Datasheet - Page 2
![IC SWITCH HALL EFFECT SOT-89](/photos/19/49/194956/a1229llttr-t_sml.jpg)
A3240LLTTR
Manufacturer Part Number
A3240LLTTR
Description
IC SWITCH HALL EFFECT SOT-89
Manufacturer
Allegro Microsystems Inc
Type
Special Purposer
Datasheet
1.A3240ELHLT-T.pdf
(11 pages)
Specifications of A3240LLTTR
Sensing Range
50G Trip, 5G Release
Voltage - Supply
4.2 V ~ 24 V
Current - Supply
6mA
Current - Output (max)
25mA
Output Type
Digital, Open Collector
Features
Regulated Voltage
Operating Temperature
-40°C ~ 150°C
Package / Case
SOT-89-3
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Features and Benefits
▪ Resistant to Physical Stress
▪ Superior Temperature Stability
▪ Output Short-Circuit Protection
▪ Operation From Unregulated Supply
▪ Reverse Battery Protection
▪ Sol id-State Reliability
▪ Small Size
Packages:
27621.20i
Not to scale
3-pin SOT89
(LT package)
3-pin SOT23W
(LH package)
X
REG.
SUPPLY
Functional Block Diagram
(UA package)
SUBCIRCUITS
3-pin SIP
TO ALL
Description
The A3240 Hall-effect switch is an extremely tempera-
ture-stable and stress-resistant sensor IC especially suited
for operation over extended tem per a ture ranges to +150°C.
Superior high-temperature per for mance is made possible
through dynamic offset cancellation, which reduces the
residual offset voltage normally caused by device overmolding,
tem per a ture de pen den cies, and thermal stress.
The device includes on a single silicon chip a voltage regulator,
Hall-voltage generator, small-signal amplifier, chopper
sta bi li za tion, Schmitt trigger, and a short-circuit protected
open-collector output to sink up to 25 mA. A south pole of
sufficient strength will turn the output on. An on-board regulator
permits operation with supply voltages of 4.2 to 24 volts.
Three package styles provide a magnetically op ti mized pack age
for most ap pli ca tions. Package type LH is a modified SOT23W
surface-mount package, LT is a miniature SOT89/TO-243AA
transistor package for surface-mount applications; while UA is
a three-lead ultra-mini-SIP for through-hole mounting. The LH
and UA packages are also available in a lead (Pb) free version
(suffix, –T) , with a 100% matte tin plated leadframe.
Chopper-Stabilized, Precision
CONTROL
CURRENT
LIMIT
Hall-Effect Switch
<1
GROUND
Dwg. FH-020-1
OUTPUT
A3240