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| 型號： | ATS665LSGTN-T |
| 廠商： | Allegro MicroSystems, Inc. |
| 英文描述： | True Zero Speed, High Accuracy, Gear Tooth Sensor |
| 中文描述： | 真零高速，高精度，齒輪齒傳感器 |
| 文件頁數(shù)： | 13/17頁 |
| 文件大?。?/td> | 493K |
| 代理商： | ATS665LSGTN-T |
ATS665LSG
TRUE ZERO-SPEED GEAR TOOTH SENSOR
POWER DE-RATING
Due to internal power consumption, the junction
temperature of the IC, Tj, is higher than the ambient
environment temperature, Ta. To ensure that the device
does not operate above the maximum rated junction
temperature use the following calculations:
Δ
T = P * R
θ
ja
Where: P = Vcc * Icc
∴ Δ
T=Vcc * Icc * R
θ
ja
Where
Δ
T denotes the temperature rise resulting from
the IC’s power dissipation.
Tj = Ta +
Δ
T
For the sensor :
Tj(max) = 165°C
R
θ
ja = 126°C/W
Typical Tj calculation:
Ta = 25 °C
Vcc = 5 V
Icc = 7.0 mA
P
D
= Vcc * Icc = 5 V * 8.0 mA = 40.0 mW
Δ
T = P * R
θ
ja = 40.0 mW * 126°C/W = 5.0°C
Tj = Ta +
Δ
T =
25 °C + 5.0°C = 30.0°C
Maximum Allowable Power Dissipation Calculation
for ATS665:
Assume:
Ta = Ta
max
= 165 °C
Tj(max) = 165°C
Icc = 12.0 mA
If:
Then, at Ta = 150 °C:
= Tj
Δ
T
max
If:
Δ
T = P
Then, at Ta = 150°C:
=
Δ
T
P
Dmax
If:
P = Vcc * Icc
Then the maximum Vcc at 150°C is therefore:
Vccmax = P
/ Icc = 119 mW / 12.0 mA = 9.9 V
Dmax
This value applies only to the voltage drop across the
665 chip. If a protective series diode or resistor is used,
the effective maximum supply voltage is increased.
For example, when a standard diode with a 0.7 V drop is
used:
Vsmax = 9.9 V + 0.7 V = 10.6 V
Tj = Ta +
Δ
T
– Ta
=
165°C
-
150°C = 15°C
max
max
* R
θ
ja
D
/ R
θ
ja
= 15°C / 126°C/W = 119 mW
max
Final Version, Rev 2.0; MN; 19Dec05
Page
13
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
Copyright 1993, 1995, 2005 Allegro MicroSystems, Inc.
4
max Icc @ 150C < max Icc @ 25C, see characteristic
data
ATS665LSG Package Power De-Rating Curve
Thermal Resistance = 126°C/Watt, T
jmax
= 165°C
0.0
2.0
4.0
6.0
8.0
10.0
12.0
14.0
16.0
18.0
20.0
22.0
24.0
26.0
28.0
30.0
20
40
60
Ambient Temperature [°C]
80
100
120
140
160
180
M
c
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ATS665LSGTN-T | 制造商:Allegro MicroSystems 功能描述:; Leaded Process Compatible:Yes |
| ATS667LSG | 制造商:ALLEGRO 制造商全稱:Allegro MicroSystems 功能描述:True Zero-Speed, High Accuracy Gear Tooth Sensor IC |
| ATS667LSGTN-T | 功能描述:IC SENSOR GEAR TOOTH 4SIP RoHS:是 類別:傳感器，轉(zhuǎn)換器 >> 磁性 - 霍爾效應(yīng)，數(shù)字式開關(guān)，線性，羅盤 (IC) 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 傳感范圍:20mT ~ 80mT 類型:旋轉(zhuǎn) 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(shù)字式，PWM，8.5 位串行 特點(diǎn):可編程 工作溫度:-40°C ~ 150°C 封裝/外殼:20-SSOP（0.209"，5.30mm 寬） 供應(yīng)商設(shè)備封裝:20-SSOP 包裝:Digi-Reel® 其它名稱:AS5132-HSST-500DKR |
| ATS668LSMTN-T | 功能描述:THREE-WIRE DIFFERENTIAL SPEED SE 制造商:allegro microsystems, llc 系列:* 零件狀態(tài):在售 標(biāo)準(zhǔn)包裝:1 |
| ATS671LSE | 制造商:Allegro MicroSystems LLC 功能描述: |
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