A1146LUA Allegro Microsystems Inc, A1146LUA Datasheet

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A1146LUA

Manufacturer Part Number
A1146LUA
Description
IC SWITCH HALL EFFECT UNI 3-SIP
Manufacturer
Allegro Microsystems Inc
Type
Unipolar Switchr
Datasheet

Specifications of A1146LUA

Sensing Range
60G Trip, 10G Release
Voltage - Supply
3.5 V ~ 24 V
Current - Supply
6.9mA
Output Type
Digital, Open Drain
Features
Regulated Voltage
Operating Temperature
-40°C ~ 150°C
Package / Case
3-SIP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Current - Output (max)
-
Allegro MicroSystems, Inc. reserves the right to make, from time to time, revisions to the anticipated product life cycle plan
for a product to accommodate changes in production capabilities, alternative product availabilities, or market demand. The
information included herein is believed to be accurate and reliable. However, Allegro MicroSystems, Inc. assumes no respon-
sibility for its use; nor for any infringements of patents or other rights of third parties which may result from its use.
These devices are in production, however, they have been deemed
Pre-End of Life. These products are approaching end of life. Within a
minimum of 6 months, these devices will enter their final, Last Time
Buy, order phase.
Currently available next generation replacement parts are available:
Recommended Substitutions:
Date of status change: January 31, 2011
Date of status change: March 8, 2011
NOTE: For detailed information on purchasing options, contact your
local Allegro field applications engineer or sales representative.
• for the A1145ELHLT-T use the
• for the A1146ELHLT-T and the A1146LLHLT-T use the
• for the A1145EUA-T use the
• for the A1146EUA-T and the A1146LUA-T use the
Ultrasensitive Two-Wire Chopper-Stabilized
A1155LUA-T
A1155LLHLX-T
Unipolar Hall Effect Switches
A1156LUA-T
A1156LLHLX-T
A1145 and A1146

Related parts for A1146LUA

A1146LUA Summary of contents

Page 1

... A1146ELHLT-T and the A1146LLHLT-T use the Date of status change: January 31, 2011 • for the A1145EUA-T use the • for the A1146EUA-T and the A1146LUA-T use the Date of status change: March 8, 2011 NOTE: For detailed information on purchasing options, contact your local Allegro field applications engineer or sales representative ...

Page 2

Ultrasensitive Two-Wire Chopper-Stabilized Features and Benefits ▪ Chopper stabilization ▫ Low switchpoint drift over operating temperature range ▫ Low sensitivity to stress ▪ Factory programmed at end-of-line for optimized switchpoints ▪ On-chip protection ▫ Supply transient protection ▫ Reverse-battery protection ...

Page 3

... A1146EUA-T 4 Bulk Bag, 500 pieces/bag 3 A1146LLHLT-T Tape and Reel, 3000 pieces/reel 4 A1146LUA-T Bulk Bag, 500 pieces/bag 1 Contact Allegro for additional packing options. 2 South (+) magnetic fields must be of sufficient strength. 3 This variant is in production, however, it has been deemed Pre-End of Life. The product is approaching end of life. Within a minimum of 6 months, the device will enter its final, Last Time Buy, order phase ...

Page 4

A1145 and A1146 ELECTRICAL CHARACTERISTICS Characteristic Symbol Supply Voltage 1 2 Supply Current Reverse Supply Current Supply Zener Clamp Voltage V ZSUPPLY 3 Supply Zener Clamp Current I ZSUPPLY Output Slew Rate 4 Chopping Frequency Power-On Time 5 6,7 Power-On ...

Page 5

A1145 and A1146 Supply Current (Low) versus Ambient Temperature at Various Levels of V (A1145 and A1146 – 100 Ambient Temperature, T Operate Point versus Ambient Temperature at Various Levels of V ...

Page 6

A1145 and A1146 THERMAL CHARACTERISTICS may require derating at maximum conditions, see application information Characteristic Package Thermal Resistance *Additional thermal information available on Allegro Web site. Ultrasensitive Two-Wire Chopper-Stabilized Unipolar Hall Effect Switches Symbol Test Conditions* Package LH, 1-layer PCB ...

Page 7

A1145 and A1146 Operation The output the A1145 device switches low after the CC magnetic field at the Hall element exceeds the operate point threshold When the magnetic field is reduced to below the OP ...

Page 8

A1145 and A1146 Chopper Stabilization Technique When using Hall-effect technology, a limiting factor for switchpoint accuracy is the small signal voltage developed across the Hall element. This voltage is disproportionally small relative to the offset that can be produced at ...

Page 9

A1145 and A1146 Typical Application Circuit The A114x family of devices must be protected by an external bypass capacitor connected between the supply, VCC, BYP and the ground, GND, of the device. C noise and the noise generated ...

Page 10

A1145 and A1146 Power Derating The device must be operated below the maximum junction temperature of the device Under certain combinations of J(max) peak conditions, reliable operation may require derating sup- plied power or improving the heat dissipation ...

Page 11

A1145 and A1146 EMC (Electromagnetic Compatibility) Requirements Package LH, 3-pin SOT VCC connection 3. GND Ultrasensitive Two-Wire Chopper-Stabilized Unipolar Hall Effect Switches Device Qualification Program Contact Allegro for information. Contact your local representative ...

Page 12

A1145 and A1146 +0.12 2.98 –0.08 3 +0.10 2.90 –0. 10° REF 0.95 BSC For Reference Only; not for tooling use (reference dwg. 802840) Dimensions in millimeters Dimensions exclusive of mold flash, gate burrs, and dambar protrusions Exact ...

Page 13

A1145 and A1146 45° +0.08 3.02 –0.05 2.16 MAX 0.51 REF 1 15.75 ±0.51 +0.05 0.43 –0.07 Copyright ©2004-2010, Allegro MicroSystems, Inc. Allegro MicroSystems, Inc. reserves the right to make, from time to time, such de par tures from the ...

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