A3340LUA-T Allegro Microsystems Inc, A3340LUA-T Datasheet - Page 2

• Manufacturer Part Number: A3340LUA-T
• Description: IC HALL EFFECT SWITCH 3-SIP
• Manufacturer: Allegro Microsystems Inc
• Type: Unipolar Switchr

Specifications of A3340LUA-T

• 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: 3-SIP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 620-1212

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: 3 pin SOT23W (suffix LH),
and 3 pin SIP (suffix UA)
Not to scale
A3340-DS, Rev. 8
VCC
Amp
Functional Block Diagram
Amp
Description
The A3340 Hall effect switch is an extremely temperature-stable
and stress-resistant sensor IC especially suited for operation
over extended temperature ranges up to 150°C. Superior
high-temperature performance is made possible through
dynamic offset cancellation, which reduces the residual offset
voltage normally caused by device overmolding, temperature
dependencies, and thermal stress.
The device includes on a single silicon chip a voltage regulator,
Hall-voltage generator, small-signal amplifier, chopper
stabilization, 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 off. An on-board regulator
permits operation with supply voltages of 4.2 to 24 volts.
Two package styles provide a magnetically optimized package
for most applications. Suffix LH is an SOT23W surface mount
package and while suffix UA is a three-lead ultramini SIP for
through hole mounting.
The A3340 complements the A3240, which offers the same
features, but with the opposite output polarity.
Chopper-Stabilized, Precision
Regulator
To All Subcircuits
Current Limit
Control
Hall-Effect Switch
GND
<1
VOUT
A3340