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參數(shù)資料
| 型號(hào)： | A3197EU |
| 廠商： | Allegro MicroSystems, Inc. |
| 英文描述： | IC SENSOR QWHEEL ROTARY 14TSSOP |
| 中文描述： | 保護(hù)，高溫，集電極開路霍爾效應(yīng)鎖存 |
| 文件頁數(shù)： | 1/12頁 |
| 文件大?。?/td> | 193K |
| 代理商： | A3197EU |
Always order by complete part number, e.g.,
A3197LU
.
3197
PROTECTED, HIGH-TEMPERATURE,
OPEN-COLLECTOR HALL-EFFECT LATCH
These open-collector Hall-effect latches are capable of sensing magnetic
fields while using an unprotected power supply. The A3197LLT and A3197LU
can provide position and speed information by providing a digital output for
magnetic 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. Thermal and output short-circuit
protection allow an increased wiring harness fault tolerance. The temperature
compensated switch points, the wide operating voltage range, and the integrated
protection make these devices ideal for use in automotive applications such as
transmission speed sensors and integrated wheel bearing speed sensors.
Each monolithic device contains an integrated Hall-effect transducer, a
temperature-compensated comparator, a voltage regulator, and a buffered 35 mA
output sink stage. Supply protection is made possible by the integration of
overvoltage and undervoltage shutdown circuitry that monitor supply fault
conditions and shut down the IC. Noise shutdown circuitry (patent applied for)
prevents the propagation of supply transients to the logic load. Output protec-
tion circuitry includes a current limit loop that limits the maximum output sink
current, and thermal protection circuitry that shuts down the device during an
over-heating condition such as with a shorted load.
The A3197LLT and A3197LU are 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
I
Internal Protection For Automotive (ISO/DIN) Transients
I
Operation From Unregulated Supply
I
Reverse Battery Protection
I
Undervoltage Lockout
I
Supply Noise-Suppression Circuitry
I
Output Short-Circuit Protection
I
Output Zener Clamp
I
Thermal Protection
I
Symmetrical Latching Switch Points
I
Operable with Multipole Ring Magnets
D
2
ABSOLUTE MAXIMUM RATINGS
Supply Voltage, V
CC
(100 ms) ...................................
115 V*
(continuous) ...............................
28 V*
Reverse Battery Voltage, V
RCC
(100 ms) ...................................
-100 V
(continuous) ...............................
-35 V
Magnetic Flux Density, B ..........
Unlimited
Output OFF Voltage, V
OUT
.................
26 V
Reverse Output Voltage V
OUT
.........
-0.5 V
Continuous Output Current,
I
OUT
..........................................
35 mA*
Reverse Output Current,
I
OUT
........................................
-100 mA
Package Power Dissipation,
P
D
.......................................
See Graph
Junction Temperature, T
J
.................
170
°
C
Operating Temperature Range,
T
A..........................................
-40
°
C to +150
°
C
Storage Temperature, T
S
..................
170
°
C
*Fault condition, internal overvoltage shutdown
above 28 V; output current limited above 35 mA.
Dwg. PH-003-2
1
S
V
CC
G
3
2
O
X
PTCT
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| A3197LLT | PROTECTED, HIGH-TEMPERATURE, OPEN-COLLECTOR HALL-EFFECT LATCH |
| A3197LU | PROTECTED, HIGH-TEMPERATURE, OPEN-COLLECTOR HALL-EFFECT LATCH |
| A31W33128 | LCD Controller-Driver |
| A31W33128C | LCD Controller-Driver |
| A31W33128T | LCD Controller-Driver |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| A3197LLT | 制造商:ALLEGRO 制造商全稱:Allegro MicroSystems 功能描述:HALL-EFFECT LATCHES FOR HIGH-TEMPERATURE OPERATION |
| A3197LU | 制造商:ALLEGRO 制造商全稱:Allegro MicroSystems 功能描述:HALL-EFFECT LATCHES FOR HIGH-TEMPERATURE OPERATION |
| A3197X | 制造商:ALLEGRO 制造商全稱:Allegro MicroSystems 功能描述:HALL-EFFECT LATCHES FOR HIGH-TEMPERATURE OPERATION |
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