Allegro MicroSystems A3141 Series Manual

V
CC
1 2
Dwg. PH-003A
Pinning is shown viewed from branded side.
ABSOLUTE MAXIMUM RATINGS
°
at T = +25
A
Supply Voltage, V ............................ 28 V
CC
Reverse Battery Voltage, V
RCC
Magnetic Flux Density, B .......... Unlimited
Output OFF Voltage, V .................. 28 V
OUT
Reverse Output Voltage, V
OUT
Continuous Output Current, I
Operating Temperature Range, T
Suffix 'E–' .................. -40
Suffix 'L–' ................ -40
Storage Temperature Range,
T .............................. -65
S
3141
3144
SENSITIVE HALL-EFFECT SWITCHES
FOR HIGH-TEMPERATURE OPERATION
tighter magnetic specifications, designed to operate continuously over
extended temperatures to +150°C, and are more stable with both
temperature and supply voltage changes. The unipolar switching
characteristic makes these devices ideal for use with a simple bar or rod
magnet. The four basic devices (3141, 3142, 3143, and 3144) are
identical except for magnetic switch points.
voltages of 4.5 to 24 volts, reverse battery protection diode, quadratic
Hall-voltage generator, temperature compensation circuitry, small-
signal amplifier, Schmitt trigger, and an open-collector output to sink
up to 25 mA. With suitable output pull up, they can be used with
bipolar or CMOS logic circuits. The A3141– and A3142– are im-
proved replacements for the UGN/UGS3140–; the A3144– is the
3
improved replacement for the UGN/UGS3120–.
operating temperature range. Suffix 'E–' is for the automotive and
industrial temperature range of -40°C to +85°C. Suffix 'L–' is for the
automotive and military temperature range of -40°C to +150°C. Three
package styles provide a magnetically optimized package for most
applications. Suffix '–LT' is a miniature SOT89/TO-243AA transistor
package for surface-mount applications; suffix '–UA' is a three-lead
ultra-mini-SIP.
FEATURES and BENEFITS
Superior Temp. Stability for Automotive or Industrial Applications
C
4.5 V to 24 V Operation ... Needs Only An Unregulated Supply
Open-Collector 25 mA Output ... Compatible with Digital Logic
........... -35 V
Reverse Battery Protection
Activate with Small, Commercially Available Permanent Magnets
Solid-State Reliability
Small Size
........... -0.5 V
Resistant to Physical Stress
...... 25 mA
OUT
A
° °
C to +85 C
° °
C to +150 C
° °
C to +170 C
Always order by complete part number, e.g., A3141ELT .
THRU
These Hall-effect switches are monolithic integrated circuits with
Each device includes a voltage regulator for operation with supply
The first character of the part number suffix determines the device