A3241LLHLT Allegro Microsystems Inc, A3241LLHLT Datasheet - Page 2

• Manufacturer Part Number: A3241LLHLT
• Description: IC SWITCH HALL EFFECT SOT23W
• Manufacturer: Allegro Microsystems Inc
• Type: Unipolar Switchr

Specifications of A3241LLHLT

• Sensing Range: 135G Trip, 40G Release
• Voltage - Supply: 3.6 V ~ 24 V
• Current - Supply: 3.5mA
• Output Type: Digital, Open Drain
• Features: Regulated Voltage
• Operating Temperature: -40°C ~ 150°C
• Package / Case: SOT-23W
• Magnetic Type: Unipolar
• Operating Supply Voltage (min): 3.6V
• Operating Supply Voltage (typ): 5/9/12/15/18V
• Operating Supply Voltage (max): 24V
• Mag Sensor Operate Point (g): 135Gs
• Mag Sensor Release Point (g): 40Gs
• Mag Sensor Hysteresis(g): 25Gs
• 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: Contains lead / RoHS non-compliant
• Current - Output (max): -
• Lead Free Status / RoHS Status: Not Compliant, Contains lead / RoHS non-compliant

Features and Benefits
▪ Chopper stabilization
▪ Reverse battery protection
▪ Output short circuit protection
▪ Solid state reliability
▪ Small size
▪ Robust EMC capability
▪ High ESD ratings (HBM)
Packages: 3 pin SOT23W (suffix LH), and
3 pin SIP (suffix UA)
Not to scale
A3241-DS, Rev. 16
▫ Superior temperature stability
▫ Extremely low switchpoint drift
▫ Insensitive to physical stress
VCC
Chopper-Stabilized Unipolar Hall-Effect Switches
Amp
Functional Block Diagram
Amp
Description
The A3241 and A3242 integrated circuits are unipolar Hall-
effect switches with digital outputs. These devices are suited
for operation over extended temperature ranges, up to +150°C.
Superior high-temperature performance is made possible
through an Allegro
which reduces the residual offset voltage normally caused
by device overmolding, temperature excursions, and thermal
stress.
The A3241 and A3242 Hall-effect switches include the
following on a single silicon chip: voltage regulator, Hall-
voltage generator, small-signal amplifier, chopper stabilization,
Schmitt trigger, and a short circuit protected open-drain output.
Advanced BiCMOS wafer fabrication processing is used to
take advantage of low-voltage requirements, component
matching, very low input-offset errors, and small component
geometries.
The integrated voltage regulator permits operation from 3.6 to
24 V. The unipolar family members operate with a sufficient
south polarity field only, turning off in the absence of such a
south polarity field.
Continued on the next page…
Regulator
To All Subcircuits
Current Limit
®
Control
patented dynamic offset cancellation,
A3241 and A3242
GND
<1Ω
VOUT