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參數資料
| 型號： | A3282LLHLT-T |
| 廠商： | Allegro Microsystems Inc |
| 文件頁數： | 10/12頁 |
| 文件大小： | 491K |
| 描述： | IC SW HALL EFFECT CHOPPER SOT23W |
| 標準包裝： | 1 |
| 傳感范圍： | 150G 跳閘，-150G 釋放 |
| 類型： | 雙極卡鎖 |
| 電源電壓： | 3.6 V ~ 24 V |
| 電流 - 電源： | 3.5mA |
| 電流 - 輸出（最大）： | 25mA |
| 輸出類型： | 數字，開路集電極 |
| 特點： | 穩壓電壓 |
| 工作溫度： | -40°C ~ 150°C |
| 封裝/外殼： | SOT-23W |
| 供應商設備封裝： | SOT-23W |
| 包裝： | 標準包裝 |
| 其它名稱： | 620-1055-6 |
Chopper-Stabilized Hall Effect Latch
A3282
9
Allegro MicroSystems, Inc.
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
The device must be operated below the maximum junction
temperature of the device, T
J(max)
. Under certain combinations of
peak conditions, reliable operation may require derating sup-
plied power or improving the heat dissipation properties of the
application. This section presents a procedure for correlating
factors affecting operating T
J
. (Thermal data is also available on
the Allegro MicroSystems Web site.)
The Package Thermal Resistance, R
qJA
, is a gure of merit sum-
marizing the ability of the application and the device to dissipate
heat from the junction (die), through all paths to the ambient air.
Its primary component is the Effective Thermal Conductivity,
K, of the printed circuit board, including adjacent devices and
traces. Radiation from the die through the device case, R
qJC
, is
relatively small component of R
qJA
. Ambient air temperature,
T
A
, and air motion are signi cant external factors, damped by
overmolding.
The effect of varying power levels (Power Dissipation, P
D
), can
be estimated. The following formulas represent the fundamental
relationships used to estimate T
J
, at P
D
.
P
D
= V
IN
?/DIV>
I
IN
(1)
DT = P
D
?/DIV>
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R
qJA
(2)
T
J
= T
A
+ 擳 (3)
For example, given common conditions such as: T
A
= 25癈,
V
CC
= 12 V, I
CC
= 1.5 mA, and R
qJA
= 165 癈/W, then:
P
D
= V
CC
?/DIV>
I
CC
= 12 V
?/DIV>
1.5 mA = 18 mW
DT = P
D
?/DIV>
R
qJA
= 18 mW
?/DIV>
165 癈/W = 3癈
T
J
= T
A
+ DT = 25癈 + 3癈 = 28癈
A worst-case estimate, P
D(max)
, represents the maximum allow-
able power level (V
CC(max)
, I
CC(max)
), without exceeding T
J(max)
,
at a selected R
qJA
and T
A
.
Example: Reliability for V
CC
at T
A
=
150癈, package LH, using a
low-K PCB.
Observe the worst-case ratings for the device, speci cally:
R
qJA
=
228 癈/W, T
J(max)
=
165癈, V
CC(max)
=
24 V, and
I
CC(max)
=
5
mA.
Calculate the maximum allowable power level, P
D(max)
. First,
invert equation 3:
DT
max
= T
J(max)
T
A
= 165
癈
150
癈 = 15
癈
This provides the allowable increase to T
J
resulting from internal
power dissipation. Then, invert equation 2:
P
D(max)
= DT
max
?R
qJA
= 15癈 ?228 癈/W = 66 mW
Finally, invert equation 1 with respect to voltage:
V
CC(est)
= P
D(max)
? I
CC(max)
= 66 mW ?5 mA = 13 V
The result indicates that, at T
A
, the application and device can
dissipate adequate amounts of heat at voltages dV
CC(est)
.
Compare V
CC(est)
to V
CC(max)
. If V
CC(est)
d V
CC(max)
, then reli-
able operation between V
CC(est)
and V
CC(max)
requires enhanced
R
qJA
. If V
CC(est)
e V
CC(max)
, then operation between V
CC(est)
and
V
CC(max)
is reliable under these conditions.
Power Derating
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相關代理商/技術參數 |
參數描述 |
|---|---|
| A3282LUA | 功能描述:IC SWITCH HALL EFFECT 3-SIP RoHS:否 類別:傳感器，轉換器 >> 磁性 - 霍爾效應，數字式開關，線性，羅盤 (IC) 系列:- 標準包裝:1 系列:- 傳感范圍:20mT ~ 80mT 類型:旋轉 電源電壓:4.5 V ~ 5.5 V 電流 - 電源:15mA 電流 - 輸出（最大）:- 輸出類型:數字式，PWM，8.5 位串行 特點:可編程 工作溫度:-40°C ~ 150°C 封裝/外殼:20-SSOP（0.209"，5.30mm 寬） 供應商設備封裝:20-SSOP 包裝:Digi-Reel® 其它名稱:AS5132-HSST-500DKR |
| A3282LUA-T | 功能描述:IC SW HALL EFFECT CHOPPER 3-SIP RoHS:是 類別:傳感器，轉換器 >> 磁性 - 霍爾效應，數字式開關，線性，羅盤 (IC) 系列:- 標準包裝:1 系列:- 傳感范圍:20mT ~ 80mT 類型:旋轉 電源電壓:4.5 V ~ 5.5 V 電流 - 電源:15mA 電流 - 輸出（最大）:- 輸出類型:數字式，PWM，8.5 位串行 特點:可編程 工作溫度:-40°C ~ 150°C 封裝/外殼:20-SSOP（0.209"，5.30mm 寬） 供應商設備封裝:20-SSOP 包裝:Digi-Reel® 其它名稱:AS5132-HSST-500DKR |
| A3283ELH | 制造商:ALLEGRO 制造商全稱:Allegro MicroSystems 功能描述:HALL-EFFECT LATCHES FOR HIGH-TEMPERATURE OPERATION |
| A3283ELH | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:CHOPPER-STABILIZED， PRECISION HALL-EFFECT LATCHES |
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