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A3144-UA 반도체 회로 부품 판매점

SENSITIVE HALL-EFFECT SWITCHES FOR HIGH-TEMPERATURE OPERATION



Allegro MicroSystems 로고
Allegro MicroSystems
A3144-UA 데이터시트, 핀배열, 회로
3141 THRU
3144
SENSITIVE HALL-EFFECT SWITCHES
FOR HIGH-TEMPERATURE OPERATION
These Hall-effect switches are monolithic integrated circuits with
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.
V
CC
12
3
Each device includes a voltage regulator for operation with supply
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
improved replacement for the UGN/UGS3120–.
Dwg. PH-003A
Pinning is shown viewed from branded side.
The first character of the part number suffix determines the device
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 SOT-89/TO-243AA transis-
tor 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 ............................ 28 V
Reverse
Battery
Voltage,
V
RCC
...........
-35
V
Magnetic Flux Density, B .......... Unlimited
Output OFF Voltage, V
OUT
..................
28 V
Reverse Output Voltage, VOUT ........... -0.5 V
Continuous Output Current, IOUT ...... 25 mA
Operating Temperature Range, T
A
Suffix ‘E–’ .................. -40°C to +85°C
Suffix ‘L–’ ................ -40°C to +150°C
Storage Temperature Range,
TS .............................. -65°C to +170°C
FEATURES and BENEFITS
I Superior Temp. Stability for Automotive or Industrial Applications
I 4.5 V to 24 V Operation … Needs Only An Unregulated Supply
I Open-Collector 25 mA Output … Compatible with Digital Logic
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, e.g., A3141ELT .


A3144-UA 데이터시트, 핀배열, 회로
3141 THRU 3144
SENSITIVE
HALL-EFFECT SWITCHES
FOR HIGH-TEMP. OPERATION
FUNCTIONAL BLOCK DIAGRAM
1 VCC
REG.
X 3 OUTPUT
2 GROUND
Dwg. FH-005-2
ELECTRICAL CHARACTERISTICS at VCC = 8 V over operating temperature range.
Limits
Characteristic
Symbol
Test Conditions
Min. Typ. Max.
Supply Voltage
Output Saturation Voltage
Output Leakage Current
VCC
VOUT(SAT)
IOFF
Operating
IOUT = 20 mA, B > BOP
VOUT = 24 V, B < BRP
4.5 —
24
— 175 400
— <1.0 10
Supply Current
Output Rise Time
Output Fall Time
ICC
B < BRP (Output OFF)
— 4.4 9.0
tr
RL = 820 , CL = 20 pF
— 0.04 2.0
tf
RL = 820 , CL = 20 pF
— 0.18 2.0
Units
V
mV
µA
mA
µs
µs
MAGNETIC CHARACTERISTICS in gauss over operating supply voltage range.
Part Numbers*
A3141–
A3142–
A3143–
A3144–
Characteristic
BOP at TA = 25°C
over operating temp. range
BRP at TA = 25°C
over operating temp. range
Bhys at TA = 25°C
over operating temp. range
Min. Typ. Max.
50 100 160
30 100 175
10 45 130
10 45 145
20 55 80
20 55 80
Min. Typ. Max.
130 180 230
115 180 245
75 125 175
60 125 190
30 55 80
30 55 80
Min. Typ. Max.
220 280 340
205 280 355
165 225 285
150 225 300
30 55 80
30 55 80
Min. Typ. Max.
70 — 350
35 — 450
50 — 330
25 — 430
20 55 —
20 55 —
NOTES: Typical values are at TA = +25°C and VCC = 8 V.
BOP = operate point (output turns ON); BRP = release point (output turns OFF); Bhys = hysteresis (BOP - BRP).
*Complete part number includes a suffix to identify operating temperature range (E- or L-) and package type ( -LT, -U, or -UA).
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
Copyright © 1993, 1999, Allegro MicroSystems, Inc.




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