A1192LUA-T Allegro Microsystems Inc, A1192LUA-T Datasheet

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A1192LUA-T

Manufacturer Part Number
A1192LUA-T
Description
IC SW HALL EFFECT CHOPPER 3SIP
Manufacturer
Allegro Microsystems Inc
Series
-r
Type
Unipolar Switchr
Datasheet

Specifications of A1192LUA-T

Sensing Range
-
Voltage - Supply
3 V ~ 24 V
Current - Supply
6.9mA
Current - Output (max)
-
Output Type
2-Wire Serial
Features
Programmable
Operating Temperature
-40°C ~ 150°C
Package / Case
*
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
620-1407
Packages
Features and Benefits
▪ High speed, 4-phase chopper stabilization
▪ On-chip protection
▪ On-board voltage regulator
▪ Solid-state reliability
▪ Robust EMC and ESD performance
▪ Field programmable for optimized switchpoints
▪ Industry leading ISO 7637-2 performance through use of
A1190-DS, Rev. 2
▫ Low switchpoint drift throughout temperature range
▫ Low sensitivity to thermal and mechanical stresses
▫ Supply transient protection
▫ Reverse battery protection
▫ 3.0 to 24 V operation
proprietary, 40-V clamping structure
3-pin ultramini SIP
1.5 mm × 4 mm × 3 mm
(suffix UA)
Programmable, Chopper-Stabilized, Two Wire Hall-Effect Switches
V+
Approximate scale
0.01 μF
VCC
3-pin SOT23-W
2 mm × 3 mm × 1 mm
(suffix LH)
Functional Block Diagram
Clock/Logic
Regula
Amp
tor
To all subcircuits
Description
The A1190, A1192, and A1193 comprise a family of two-
wire, unipolar, Hall-effect switches, which can be trimmed
by the user at end-of-line to optimize magnetic switchpoint
accuracy in the application. These devices are produced on
the Allegro
which implements a patented high frequency, 4-phase,
chopper-stabilization technique. This technique achieves
magnetic stability over the full operating temperature range,
and eliminates offsets inherent in devices with a single Hall
element that are exposed to harsh application environments.
The A119x family has a number of automotive applications.
These include sensing seat track position, seat belt buckle
presence, hood/trunk latching, and shift selector position.
Two-wire unipolar switches are particularly advantageous in
cost-sensitive applications because they require one less wire
for operation versus the more traditional open-collector output
switches. Additionally, the system designer inherently gains
diagnostics because there is always output current flowing,
which should be in either of two narrow ranges. Any current
level not within these ranges indicates a fault condition.
All family members are offered in two package styles. The LH
is a SOT-23W style, miniature, low profile package for surface-
mount applications. The UA is a 3-pin, ultra-mini, single inline
package (SIP) for through-hole mounting. Both packages are
lead (Pb) free, with 100% matte tin leadframe plating.
Low-Pass
Filter
Program / Lock
A1190, A1192, and A1193
Offset Adjust
Schmitt
Trigger
®
advanced BiCMOS wafer fabrication process,
UA package only
Polarity
GND
I
CC
Adjust
GND

Related parts for A1192LUA-T

A1192LUA-T Summary of contents

Page 1

Programmable, Chopper-Stabilized, Two Wire Hall-Effect Switches Features and Benefits ▪ High speed, 4-phase chopper stabilization ▫ Low switchpoint drift throughout temperature range ▫ Low sensitivity to thermal and mechanical stresses ▪ On-chip protection ▫ Supply transient protection ▫ Reverse battery ...

Page 2

... Part Number Packing 1 A1190LLHLX-T 13-in. reel, 10 000 pieces/reel A1190LUA-T 3 Bulk, 500 pieces/bag A1192LLHLT-T 2 7-in. reel, 3000 pieces/reel A1192LLHLX-T 13-in. reel, 10 000 pieces/reel A1192LUA-T 3 Bulk, 500 pieces/bag A1193LLHLT-T 2 7-in. reel, 3000 pieces/reel A1193LLHLX-T 13-in. reel, 10 000 pieces/reel 3 A1193LUA-T Bulk, 500 pieces/bag ® 1 Contact Allegro for additional packing options ...

Page 3

A1190, A1192, and A1193 ELECTRICAL CHARACTERISTICS range; unless otherwise noted Characteristics Supply Voltage 1 Supply Current Supply Zener Clamp Voltage Supply Zener Clamp Current Reverse Supply Current Output Slew Rate 2 Chopping Frequency Power-Up Time 3,4 5,6 Power-Up State 1 ...

Page 4

A1190, A1192, and A1193 Thermal Characteristics may require derating at maximum conditions, see application information Characteristic Package Thermal Resistance *Additional thermal information available on the Allegro website 1900 1800 1700 1600 1500 1400 1300 1200 1100 1000 Programmable, Chopper-Stabilized, Two ...

Page 5

A1190, A1192, and A1193 A1190 Average Supply Current (Low) versus Temperature 5.0 4 3.0 2.5 2.0 -60 -40 - Ambient Temperature, T A1192/A1193 Average ...

Page 6

A1190, A1192, and A1193 Average Switchpoint Hysteresis versus Temperature Programmable, Chopper-Stabilized, Two Wire Hall-Effect Switches A1190/A1192/A1193 3 -60 -60 -40 -40 -20 - ...

Page 7

A1190, A1192, and A1193 The A1190 and A1192 output switches low after the mag- CC netic field at the Hall sensor IC exceeds the operate point thresh- old When the magnetic field is reduced to below ...

Page 8

A1190, A1192, and A1193 V+ VCC A119x GND GND A ECU R SENSE (A) Low side sensing Figure 2. Typical application circuits Chopper Stabilization Technique When using Hall-effect technology, a limiting factor for switchpoint accuracy is the small signal voltage ...

Page 9

A1190, A1192, and A1193 Overview Programming is accomplished by sending a series of input volt- age pulses serially through the VCC (supply) pin of the device. A unique combination of different voltage level pulses controls the internal programming logic of ...

Page 10

A1190, A1192, and A1193 Code. The number used to identify the combination of fuses activated in a bit field, expressed as the decimal equivalent of the binary value. The LSB of a bit field is denoted as code 1, or ...

Page 11

A1190, A1192, and A1193 Try Mode In Try mode, bit field addressing is accomplished by applying a series of V pulses to the VCC pin of the device shown in figure 6. Each pulse increases the bit field ...

Page 12

A1190, A1192, and A1193 To correctly address the fuses to be blown, the code represent- ing the required parameter value must be translated into a binary number. For example, as shown in figure 7, decimal code 5 is equivalent to ...

Page 13

A1190, A1192, and A1193 |B (max)| OP (Code 0, Bit value 000000 ) |B (min HYS Try Mode, Bit Field Code Figure 8. B Selection Up Counting OP Programmable, Chopper-Stabilized, Two Wire ...

Page 14

A1190, A1192, and A1193 Figure 10. Programming state diagram Figure 11. Example of Try mode pulse sequence, Register Key = B Figure 12. Example of Try mode pulse sequence, Register Key = B Programmable, Chopper-Stabilized, Two Wire Hall-Effect Switches selection ...

Page 15

A1190, A1192, and A1193 The device must be operated below the maximum junction tem- perature of the device, T (max). Under certain combinations of J peak conditions, reliable operation may require derating supplied power or improving the heat dissipation properties ...

Page 16

A1190, A1192, and A1193 +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-2840) Dimensions in millimeters Dimensions exclusive of mold flash, gate burrs, and dambar protrusions Exact ...

Page 17

A1190, A1192, and A1193 45° E 1.44 NOM +0.08 E 3.02 –0.05 1.02 MAX 14.99 ±0.25 +0.05 0.43 –0.07 Programmable, Chopper-Stabilized, Two Wire Hall-Effect Switches Package UA, 3-Pin SIP +0.08 4.09 –0. 2.05 NOM 10° E Branded Face ...

Page 18

A1190, A1192, and A1193 Copyright ©2009-2011, Allegro MicroSystems, Inc. Allegro MicroSystems, Inc. reserves the right to make, from time to time, such de par tures from the detail spec tions as may be required to per- mit ...

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