- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄383883 > TC1266VOA (Microchip Technology Inc.) 200mA PCI LDO PDF資料下載
參數(shù)資料
| 型號： | TC1266VOA |
| 廠商： | Microchip Technology Inc. |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | 200mA PCI LDO |
| 中文描述： | 200mA的LDO穩(wěn)壓器的PCI |
| 文件頁數(shù)： | 5/16頁 |
| 文件大小： | 526K |
| 代理商： | TC1266VOA |
2002 Microchip Technology Inc.
DS21377B-page 5
TC1266
4.0
THERMAL CONSIDERATIONS
4.1
Thermal Shutdown
Integrated
regulator off when die temperature exceeds 160°C.
The regulator remains off until the die temperature
drops to approximately 150°C.
thermal
protection
circuitry
shuts
the
4.2
Power Dissipation
The amount of power the regulator dissipates is
primarily a function of input and output voltage, and
output current. The following equation is used to
calculate worst case actual power dissipation:
EQUATION 4-1:
The
(Equation 4-2) is a function of the maximum ambient
temperature (T
A
MAX
), the maximum allowable die
temperature (T
J
MAX
) and the thermal resistance from
junction-to-air (
θ
JA
).
maximum
allowable
power
dissipation
EQUATION 4-2:
Equation 4-1
Equation 4-2 to ensure regulator thermal operation is
within limits. For example:
can
be
used
in
conjunction
with
Given:
V
IN
MAX
V
OUT
MIN
I
LOAD
MAX
= 200mA
T
J
MAX
T
A
MAX
θ
JA
Find: 1. Actual power dissipation
2. Maximum allowable dissipation
= 5V ± 5%
= 3.217V
= 125°C
= 70°C
= 130°C/W (SOIC)
Actual power dissipation:
P
D
≈
(V
IN
MAX
– V
OUT
MIN
)I
LOAD
MAX
= (5.25V - 3.217V) 200mA
= 407mW
Maximum allowable power dissipation:
In this example, the TC1266 dissipates a maximum of
407mW; below the allowable limit of 423mW.
Where:
P
D
≈
(V
IN
MAX
– V
OUT
MIN
)I
LOAD
MAX
P
D
V
IN
MAX
V
OUT
MIN
I
LOAD
MAX
= Worst case actual power dissipation
= Maximum voltage on V
IN
= Minimum regulator output voltage
= Maximum output (load) current
P
D
MAX
= (T
J
MAX
– T
A
MAX
)
θ
JA
Where all terms are previously defined.
P
D
MAX
= (T
J
MAX
– T
A
MAX
)
θ
JA
= (125 – 70)
130
= 423mW
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TC1266VUA | 200mA PCI LDO |
| TC1267 | UF4006 800V 1A ULTRAFAST DIODE DO-41 |
| TC1267VET | 400mA PCI LDO |
| TC1268 | 500mA Fixed Output, Fast Response CMOS LDO with Shutdown |
| TC1268-2.5VOA | 500mA Fixed Output, Fast Response CMOS LDO with Shutdown |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TC1266VOATR | 功能描述:低壓差穩(wěn)壓器 - LDO 200mA PCI LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| TC1266VUA | 功能描述:低壓差穩(wěn)壓器 - LDO 200mA PCI LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| TC1266VUATR | 功能描述:低壓差穩(wěn)壓器 - LDO 200mA PCI LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| TC1267 | 功能描述:鋁質(zhì)電解電容器 - 帶引線 225UF 250V AXIAL CAP RoHS:否 制造商:Kemet 引線類型: 電容:220 uF 容差:20 % 電壓額定值:25 V 工作溫度范圍: 端接類型:Radial 外殼直徑:8 mm 外殼長度:11 mm 引線間隔:5 mm 產(chǎn)品:General Purpose Electrolytic Capacitors 封裝:Bulk |
| TC1267_13 | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:400mA PCI LDO |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。