A3425LK-T Allegro Microsystems Inc, A3425LK-T Datasheet

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A3425LK-T

Manufacturer Part Number
A3425LK-T
Description
Hall Effect Switch IC
Manufacturer
Allegro Microsystems Inc
Type
Bipolar Latchr
Datasheet

Specifications of A3425LK-T

Peak Reflow Compatible (260 C)
Yes
Output Current
70mA
Termination Type
Through Hole
Supply Voltage Max
18V
Leaded Process Compatible
Yes
No. Of Pins
4
Hall Effect Type
Bipolar
Supply Voltage Min
3.3V
Sensing Range
35G Trip, -35G Release
Voltage - Supply
3.3 V ~ 18 V
Current - Supply
6mA
Current - Output (max)
20mA
Output Type
Digital, Open Drain
Features
Ultra Sensitive
Operating Temperature
-40°C ~ 150°C
Package / Case
4-SIP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
A3425LK-T
Manufacturer:
ALLEGRO
Quantity:
2 100
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 parts are in production but have been determined to be
LAST TIME BUY. This classification indicates that the product is
obsolete and notice has been given. Sale of this device is currently
restricted to existing customer applications. The device should not be
purchased for new design applications because of obsolescence in the
near future. Samples are no longer available.
Date of status change: November 1, 2010
Deadline for receipt of LAST TIME BUY orders: April 30, 2011
Recommended Substitutions:
NOTE: For detailed information on purchasing options, contact your
local Allegro field applications engineer or sales representative.
For existing customer transition, and for new customers or new appli-
cations, refer to the A1230.
Ultra-Sensitive Dual-Channel Quadrature
Last Time Buy
Hall-Effect Bipolar Switch
A3425

Related parts for A3425LK-T

A3425LK-T Summary of contents

Page 1

These parts are in production but have been determined to be LAST TIME BUY. This classification indicates that the product is obsolete and notice has been given. Sale of this device is currently restricted to existing customer applications. The device ...

Page 2

Features and Benefits ▪ Two matched Hall effect switches on a single substrate ▪ Hall element spacing approximately 1 mm ▪ Superior temperature stability ▪ 3 operation ▪ Integrated ESD diode from OUTPUT and VCC pins to ...

Page 3

... Post-assembly factory programming provides sensitive switchpoints Selection Guide Part Number Packing* A3425EK-T Bulk, 500 pieces/bag A3425LK-T Bulk, 98 pieces/bag A3425LLTR-T 13-in. reel, 3000 pieces/reel *Contact Allegro for additional packing options. Absolute Maximum Ratings Characteristic ...

Page 4

A3425 VCC Channel A Hall Element E1 Channel B Hall Element E2 Package K Package Ultra-Sensitive Dual-Channel Quadrature Hall-Effect Bipolar Switch Functional Block ...

Page 5

A3425 OPERATING CHARACTERISTICS and T = 25º Characteristic ELECTRICAL CHARACTERISTICS 1 Supply Voltage Output Leakage Current Output Rise Time Output Fall Time Supply Current Low Output Voltage Output Sink Current Output Sink Current, Continuous ...

Page 6

A3425 OPERATING CHARACTERISTICS (continued) data applies and T = 25º Characteristic MAGNETIC CHARACTERISTICS, K Package Operate Point: B > Release Point: B < Hysteresis: B – OP(A) ...

Page 7

A3425 THERMAL CHARACTERISTICS may require derating at maximum conditions, see application information Characteristic Package Thermal Resistance *Additional thermal data available on the Allegro Web site. Ultra-Sensitive Dual-Channel Quadrature Symbol Package K, 1-layer PCB with copper limited to solder pads R ...

Page 8

A3425 Chopper-Stabilized 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 dis- proportionally small relative to the offset that can be produced at the ...

Page 9

A3425 Channel A M agnetic Field at Hall Element E1 Channel B M agnetic Field at Hall Element E2 Channel A Output Signal at OUTPUTA Channel B Output Signal at OUTPUTB Ultra-Sensitive Dual-Channel Quadrature Typical Applications Operation V+ B HYS ...

Page 10

A3425 This device requires minimal protection circuitry during operation with a low-voltage regulated line. The on-chip voltage regulator provides immunity to power supply variations between 3.3 and 18 V. Because the device has open-drain outputs, pull-up resistors must be included. ...

Page 11

A3425 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 properties of the application. ...

Page 12

A3425 Electrical Operating Characteristics, Package L I CC(off ( CC(on (V) CC ...

Page 13

A3425 Magnetic Operating Characteristics, Package L Channel A, B and -10 -20 - (V) CC Channel B, B and ...

Page 14

A3425 Magnetic Operating Characteristics, Package L (continued) B Symmetry -10 - Symmetry -10 -20 - (V) CC Additional ...

Page 15

A3425 Magnetic Operating Characteristics, Package L (continued) Channel A Symmetry -10 -20 - (V) CC Channel B Symmetry -10 -20 - (V) CC Ultra-Sensitive ...

Page 16

A3425 Electrical Operating Characteristics, Package K I CC(off ( CC(on (V) CC ...

Page 17

A3425 Magnetic Operating Characteristics, Package K Channel A, B and -10 -20 - (V) CC Channel B, B and ...

Page 18

A3425 Magnetic Operating Characteristics, Package K (continued) B Symmetry -10 - Symmetry -10 -20 - (V) CC Additional ...

Page 19

A3425 Magnetic Operating Characteristics, Package K (continued) Channel A Symmetry -10 -20 - (V) CC Channel B Symmetry -10 -20 - (V) CC Ultra-Sensitive ...

Page 20

A3425 45° +0.08 3.43 –0.05 E1 2.16 MAX 0.51 REF 1 14.73 ±0.51 +0.07 0.41 –0.05 Ultra-Sensitive Dual-Channel Quadrature Package K, 4-pin SIP +0.08 5.21 –0. 2.10 1.00 1.55 ±0.05 1. 45° Branded Face ...

Page 21

A3425 4.90 ±0. 0.10 C 0.41 ±0.10 1.27 BSC For Reference Only; not for tooling use (reference DWG-9204) Dimensions in millimeters Dimensions exclusive of mold flash, gate burrs, and dambar protrusions Exact ...

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