- 您現(xiàn)在的位置：買賣IC網(wǎng) > Datasheet目錄59 > A1186LUA-T (Allegro Microsystems Inc)IC SWITCH HALL EFFECT UNI 3-SIP Datasheet資料下載
參數(shù)資料
| 型號： | A1186LUA-T |
| 廠商： | Allegro Microsystems Inc |
| 文件頁數(shù)： | 10/15頁 |
| 文件大?。?/td> | 509K |
| 描述： | IC SWITCH HALL EFFECT UNI 3-SIP |
| 產(chǎn)品培訓(xùn)模塊： | Current Sensor |
| 標(biāo)準(zhǔn)包裝： | 500 |
| 傳感范圍： | 10G ~ 60G 跳閘 - 可編程，固定釋放 |
| 類型： | 單極開關(guān) |
| 電源電壓： | 3.5 V ~ 24 V |
| 電流 - 電源： | 6.9mA |
| 輸出類型： | 數(shù)字，開路集電極 |
| 特點： | 可編程 |
| 工作溫度： | -40°C ~ 150°C |
| 封裝/外殼： | 3-SIP |
| 供應(yīng)商設(shè)備封裝： | 3-SIP |
| 包裝： | 散裝 |
Ultrasensitive Two-Wire Field-Programmable
Chopper-Stabilized Unipolar Hall Effect Switches
A1185 and
A1186
9
Allegro MicroSystems, Inc.
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
Power Derating
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 figure 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 significant 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>
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
= 4 mA, and R
qJA
= 140 癈/W, then:
P
D
= V
CC
?/DIV>
I
CC
= 12 V
?/DIV>
4 mA = 48 mW
DT = P
D
?/DIV>
R
qJA
= 48 mW
?/DIV>
140 癈/W = 7癈
T
J
= T
A
+ DT = 25癈 + 7癈 = 32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 UA, using
minimum-K PCB.
Observe the worst-case ratings for the device, specifically:
R
qJA
=
165癈/W, T
J(max)
=
165癈, V
CC(max)
=
24 V, and
I
CC(max)
=
17
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 ?165 癈/W = 91 mW
Finally, invert equation 1 with respect to voltage:
V
CC(est)
= P
D(max)
? I
CC(max)
= 91 mW ?17 mA = 5 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.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| A1193LUA-T | IC SW HALL EFFECT CHOPPER 3SIP |
| A1203LUA-T | IC SW CONTINUOUS TIME BIPO 3-SIP |
| A1205EUA-T | IC SWITCH HALL EFFECT GP 3-SIP |
| A1211LUA-T | IC LATCH HALL EFFECT 3-SIP |
| A1220LUA-T | IC HALL EFFECT LATCH 3V 3-SIP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| A1187 | 制造商:Quick 功能描述:TSOJ 18.5mm x 8mm Nozzle for 21-13205 and 21-13210 制造商:QUICK 功能描述:TSOJ 18.5 X 8 NOZZLE FOR QUICK957/957D |
| A1-18-701-15 | 制造商:Southco 功能描述: |
| A118734 | 制造商:SRC Devices 功能描述: 制造商:Coto Technology 功能描述: |
| A1188 | 制造商:Quick 功能描述:PLCC 9 X 9 NOZZLE FOR QUICK957/957D |
| A1189 | 制造商:Quick 功能描述:PLCC 34mm X 34mm Nozzle for 21-13205 and 21-13210 制造商:QUICK 功能描述:PLCC 34 X 34 NOZZLE FOR QUICK957/957D 制造商:HAKKO Corporation 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。