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What is A3189U?

This electronic component, produced by the manufacturer "Allegro MicroSystems", performs the same function as "HALL-EFFECT LATCHES FOR HIGH-TEMPERATURE OPERATION".


A3189U Datasheet PDF - Allegro MicroSystems

Part Number A3189U
Description HALL-EFFECT LATCHES FOR HIGH-TEMPERATURE OPERATION
Manufacturers Allegro MicroSystems 
Logo Allegro MicroSystems Logo 


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3185 THRU
3189
HALL-EFFECT LATCHES
FOR HIGH-TEMPERATURE OPERATION
V
CC
12
3
Dwg. PH-003A
Pinning is shown viewed from branded side.
These Hall-effect latches are extremely temperature-stable and stress-
resistant sensors especially suited for operation over extended temperature
ranges to +150°C. Superior high-temperature performance is made possible
through a novel Schmitt trigger circuit that maintains operate and release
point symmetry by compensating for temperature changes in the Hall ele-
ment. Additionally, internal compensation provides magnetic switch points
that become more sensitive with temperature, hence offsetting the usual
degradation of the magnetic field with temperature. The symmetry capability
makes these devices ideal for use in pulse-counting applications where duty
cycle is an important parameter. The four basic devices (3185, 3187, 3188,
and 3189) are identical except for magnetic switch points.
Each device includes on a single silicon chip a voltage regulator, qua-
dratic Hall-voltage generator, temperature compensation circuit, signal
amplifier, Schmitt trigger, and a buffered open-collector output to sink up to
25 mA. The on-board regulator permits operation with supply voltages of 3.8
to 24 volts.
The first character of the part number suffix determines the device
operating temperature range. Suffix ‘E–’ is for -40°C to +85°C, and suffix
‘L–’ is for -40°C to +150°C. Three package styles provide a magnetically
optimized package for most applications. Suffix ‘–LT’ is a miniature SOT-
89/TO-243AA transistor package for surface-mount applications; suffix ‘–U’
is a three-lead plastic mini-SIP, while suffix ‘–UA’ is a three-lead ultra-mini-
SIP.
ABSOLUTE MAXIMUM RATINGS
at TA = +25°C
Supply Voltage, VCC ............................ 30 V
Reverse Battery Voltage, VRCC ........... -30 V
Magnetic Flux Density, B ........... Unlimited
Output OFF Voltage, VOUT .................. 30 V
Reverse Output Voltage, VOUT .......... -0.5 V
Continuous Output Current, IOUT ..... 25 mA
Operating Temperature Range, TA
Suffix ‘E–’ ................... -40°C to +85°C
Suffix ‘L–’ ................. -40°C to +150°C
Storage Temperature Range,
TS ............................... -65°C to +170°C
FEATURES
I Symmetrical Switch Points
I Superior Temperature Stability
I Operation From Unregulated Supply
I Open-Collector 25 mA Output
I Reverse Battery Protection
I Activate With Small, Commercially Available Permanent Magnets
I Solid-State Reliability
I Small Size
I Resistant to Physical Stress
Always order by complete part number: the prefix ‘A’ + the basic four-digit
part number + a suffix to indicate operating temperature range +
a suffix to indicate package style, e.g., A3185ELT .

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A3189U equivalent
3185 THRU 3189
HALL-EFFECT LATCHES
FOR HIGH-TEMPERATURE
OPERATION
PACKAGE DESIGNATOR ‘U’
Dimensions in Inches
(controlling dimensions)
Dimensions in Millimeters
(for reference only)
0.183
0.178
0.063
0.059
4.65
4.52
1.60
1.50
0.181
0.176
0.086 1 2 3
MAX
0.600
0.560
SEE NOTE
0.016
45°
0.018
0.015
0.050
0.100
Dwg. MH-003D in
4.60
4.47
2.18
MAX
1
15.24
14.23
SEE NOTE
23
0.41
45°
0.46
0.38
1.27
2.54
Dwg. MH-003D mm
Devices in the ‘U’ package are
NOT RECOMMENDED FOR NEW DESIGN
NOTES: 1.
2.
3.
4.
5.
6.
Tolerances on package height and width represent allowable mold offsets. Dimensions given are
measured at the widest point (parting line).
Exact body and lead configuration at vendor’s option within limits shown.
Height does not include mold gate flash.
Recommended minimum PWB hole diameter to clear transition area is 0.035" (0.89 mm).
Where no tolerance is specified, dimension is nominal.
Minimum lead length was 0.500" (12.70 mm). If existing product to the original specifications is not acceptable,
contact sales office before ordering.


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On this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for A3189U electronic component.


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Featured Datasheets

Part NumberDescriptionMFRS
A3189LTThe function is HALL-EFFECT LATCHES FOR HIGH-TEMPERATURE OPERATION. Allegro MicroSystemsAllegro MicroSystems
A3189UThe function is HALL-EFFECT LATCHES FOR HIGH-TEMPERATURE OPERATION. Allegro MicroSystemsAllegro MicroSystems
A3189UAThe function is HALL-EFFECT LATCHES FOR HIGH-TEMPERATURE OPERATION. Allegro MicroSystemsAllegro MicroSystems

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