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A3195LLT PDF даташит

Спецификация A3195LLT изготовлена ​​​​«Allegro MicroSystems» и имеет функцию, называемую «PROTECTED/ HIGH-TEMPERATURE/ HALL-EFFECT LATCH WITH ACTIVE PULL-DOWN».

Детали детали

Номер произв A3195LLT
Описание PROTECTED/ HIGH-TEMPERATURE/ HALL-EFFECT LATCH WITH ACTIVE PULL-DOWN
Производители Allegro MicroSystems
логотип Allegro MicroSystems логотип 

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A3195LLT Даташит, Описание, Даташиты
3195
PROTECTED, HIGH-TEMP.,
3195ACTIVE PULL-DOWN
HALL-EFFECT LATCH
PROTECTED, HIGH-TEMPERATURE,
HALL-EFFECT LATCH WITH ACTIVE PULL-DOWN
LATCH
12
3
Dwg. PH-013
Pinning is shown viewed from branded side.
ABSOLUTE MAXIMUM RATINGS
Supply Voltage, VCC (100 ms) .......... 115 V*
(continuous) ................................... 26 V
Reverse Battery Voltage,
VRCC (100 ms) ............................ -100 V
(continuous) ................................. -30 V
Magnetic Flux Density, B ........... Unlimited
Reverse Output Voltage, VOUT ......... -0.5 V
Continuous Output Current,
IOUT ........................... Internally Limited
Package Power Dissipation,
PD ........................................ See Graph
Junction Temperature, TJ ................. 170°C
Operating Temperature Range, TA
Suffix “E–” .................... -40°C to +85°C
Suffix “L–” .................. -40°C to +150°C
Storage Temperature, TS ................. 170°C
*Fault condition, internal overvoltage shutdown
above 28 V.
These Hall-effect latches are capable of sensing magnetic fields
while using an unprotected power supply. The A3195– can provide
position and speed information by providing a digital output for mag-
netic fields that exceed their predefined switch points. These devices
operate down to zero speed and have switch points that are designed
to be extremely stable over a wide operating temperature and voltage
range. The latching characteristics make them ideal for use in pulse
counting applications when used with a multi-pole ring magnet.
A 25 mA high-side driver combined with an active pull-down is espe-
cially useful for driving capacitive loads. Output short-circuit protection
allows for an increased wiring harness fault tolerance. The tempera-
ture compensated switch points, the wide operating voltage range, and
the integrated protection make these devices ideal for use in automo-
tive applications such as transmission speed sensors and integrated
wheel bearing speed sensors.
Each monolithic device contains an integrated Hall-effect trans-
ducer, a temperature-compensated comparator, a voltage regulator,
and a buffered high-side driver with an active pull-down. Supply
protection is made possible by the integration of overvoltage shutdown
circuitry that monitors supply fault conditions. Output protection
circuitry includes source and sink current current limiting for short
circuits to supply or ground.
The A3195E– is rated for operation over a temperature range of
-40°C to +85°C; the A3195L– is rated for operation over an extended
temperature range of -40°C to +150°C. They are supplied in a three-
lead SIP (suffix –U) or a surface-mount SOT-89 (suffix –LT).
FEATURES
s Internal Protection For Automotive (ISO/DIN) Transients
s Operation From Unregulated Supply
s Reverse Battery Protection
s Undervoltage Lockout
s Supply Noise-Suppression Circuitry
s Output Short-Circuit Protection
s Output Zener Clamp
s Thermal Protection
s Symmetrical Latching Switch Points
s Operable with Multipole Ring Magnets
Always order by complete part number, e.g., A3195LU .









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A3195LLT Даташит, Описание, Даташиты
3195
PROTECTED, HIGH-TEMP.,
ACTIVE PULL-DOWN
HALL-EFFECT LATCH
1 VCC
FUNCTIONAL BLOCK DIAGRAM
OVERVOLT.
LOCKOUT
REG.
X
Dwg. FH-013
CURRENT
LIMIT
3 OUTPUT
15k
2 GROUND
800
700
600
"U" PACKAGE
500 RθJA = 183°C/W
400
"LT" PACKAGE
RθJA = 258°C/W
300
200
100
0
20 40 60 80 100 120 140 160 180
AMBIENT TEMPERATURE IN °C
Dwg. GH-054A
TRANSFER CHARACTERISTICS
26 V
MAX
VOUT(H)
0
-B
B RP
B OP
0
FLUX DENSITY
VOUT(L)
+B
Dwg. GH-034-3
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
Copyright © 1995, 1997, Allegro MicroSystems, Inc.









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A3195LLT Даташит, Описание, Даташиты
3195
PROTECTED, HIGH-TEMP.,
ACTIVE PULL-DOWN
HALL-EFFECT LATCH
ELECTRICAL CHARACTERISTICS
over operating voltage and temperature range (unless otherwise specified).
Limits
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max. Units
Supply Voltage
Overvoltage Shutdown*
Output Voltage, High
(Source Voltage)
VCC
VCC(OV)
VOUT(H)
Operating (but VCC x ICC VS TA limited)
3.8
12
26 V
B > BOP
28 —
55 V
B < BRP, IOUT = -20 mA
VCC -2 — VCC -0.3 V
Output Voltage, Low
(Sink Voltage)
Output Clamp Voltage
Output Current Limit
Supply Current
Reverse Battery Current*
Output Rise Time
Output Fall Time
Package Thermal Resist.
VOUT(L)
VOUT(CLMP)
IOUTMAX
ICC
IRCC
tr
tf
RθJA
B > BOP, IOUT <100 µA
B > BOP, IOUT = 5 mA
B < BRP, VCC > 26 V, IOUT = 0
B < BRP, VCC = 12 V
B > BOP, VOUT < 14 V
B < BRP, VCC = 18 V, IOUT = 0
B > BOP, VCC = 18 V, IOUT = 0
VCC= +115 V*
VRCC = -35 V*
VRCC = -100 V*
CL = 20 pF, RL = 330
CL = 20 pF, RL = 330
“LT” Package
“U” Package
— 0.1
— 0.25
15 18
-26 —
8.0 —
— 6.0
— 8.0
— 8.0
— -0.1
— -0.1
— 0.12
— 0.30
— 258
— 183
0.2 V
0.5 V
21 V
-70 mA
25 mA
9.0 mA
12 mA
17 mA
-5.0 mA
-10 mA
2.0 µs
5.0 µs
°C/W
°C/W
MAGNETIC CHARACTERISTICS
over operating voltage range (unless otherwise specified).
Characteristic
Symbol
Test Conditions
Min.
Operate Point
Release Point
Hysteresis
(BOP - BRP)
BOP TA = -40°C
TA = +25°C
TA = Maximum
BRP TA = -40°C
TA = +25°C
TA = Maximum
Bhys
TA = -40°C
TA = +25°C
TA = Maximum
60
50
40
-200
-160
-150
150
130
110
NOTES: Negative current is defined as coming out of (sourcing) the output.
BOP = magnetic operate point (output turns ON); BRP = magnetic release point (output turns OFF).
As used here, negative flux densities are defined as less than zero (algebraic convention).
Typical values are at TA = +25°C and VCC = 12 V.
* Fault condition. Device is shut down and operation is not possible.
Limits
Typ.
Max.
125 200
110 160
100 150
-125
-110
-100
-60
-50
-40
250 —
220 —
200 —
Units
G
G
G
G
G
G
G
G
G










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Номер в каталогеОписаниеПроизводители
A3195LLTPROTECTED/ HIGH-TEMPERATURE/ HALL-EFFECT LATCH WITH ACTIVE PULL-DOWNAllegro MicroSystems
Allegro MicroSystems

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