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參數(shù)資料
| 型號： | LP3962ESX-3.3 |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | 1.5A Fast Ultra Low Dropout Linear Regulators |
| 中文描述： | 3.3 V FIXED POSITIVE LDO REGULATOR, 0.55 V DROPOUT, PSSO5 |
| 封裝： | TO-263, 5 PIN |
| 文件頁數(shù)： | 16/22頁 |
| 文件大?。?/td> | 484K |
| 代理商： | LP3962ESX-3.3 |
Applications Information
(Continued)
Heatsinking TO-263 and SOT-223 Packages
The TO-263 and SOT223 packages use the copper plane on
the PCB as a heatsink. The tab of these packages are
soldered to the copper plane for heat sinking. Figure 3
shows a curve for the
θ
of TO-263 package for different
copper area sizes, using a typical PCB with 1 ounce copper
and no solder mask over the copper area for heat sinking.
As shown in the figure, increasing the copper area beyond 1
square inch produces very little improvement. The minimum
value for
θ
JA
for the TO-263 packag mounted to a PCB is
32C/W.
Figure 4 shows the maximum allowable power dissipation
for TO-263 packages for different ambient temperatures,
assuming
θ
is 35C/W and the maximum junction tempera-
ture is 125C.
Figure 5 shows a curve for the
θ
of SOT-223 package for
different copper area sizes, using a typical PCB with 1 ounce
copper and no solder mask over the copper area for heat
sinking.
The following figures show different layout scenarios for
SOT-223 package.
10126632
FIGURE 3.
θ
JA
vs Copper(1 Ounce) Area for TO-263
package
10126633
FIGURE 4. Maximum power dissipation vs ambient
temperature for TO-263 package
10126619
FIGURE 5.
θ
JA
vs Copper(1 Ounce) Area for SOT-223
package
10126620
FIGURE 6. SCENARIO A,
θ
JA
= 148C/W
10126621
FIGURE 7. SCENARIO B,
θ
JA
= 125C/W
L
www.national.com
16
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| LP3962ESX-5.0 | 1.5A Fast Ultra Low Dropout Linear Regulators |
| LP3962ET-1.8 | 1.5A Fast Ultra Low Dropout Linear Regulators |
| LP3962ET-2.5 | 1.5A Fast Ultra Low Dropout Linear Regulators |
| LP3962ET-3.3 | 1.5A Fast Ultra Low Dropout Linear Regulators |
| LP3962ET-5.0 | 1.5A Fast Ultra Low Dropout Linear Regulators |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LP3962ESX-5.0 | 功能描述:低壓差穩(wěn)壓器 - 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 負載調節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| LP3962ESX-5.0/NOPB | 功能描述:低壓差穩(wěn)壓器 - 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 負載調節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| LP3962ET-1.8 | 功能描述:IC REG LDO 1.8V 1.5A TO-220-5 RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 標準包裝:1 系列:- 穩(wěn)壓器拓撲結構:正，固定式 輸出電壓:4V 輸入電壓:最高 16V 電壓 - 壓降（標準）:0.28V @ 150mA 穩(wěn)壓器數(shù)量:1 電流 - 輸出:150mA 電流 - 限制（最?。?- 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:5-VFBGA 供應商設備封裝:5-uSMD 包裝:Digi-Reel® 其它名稱:LP2985AIBP-4.0DKR |
| LP3962ET-2.5 | 功能描述:IC REG LDO 2.5V 1.5A TO-220-5 RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 標準包裝:1 系列:- 穩(wěn)壓器拓撲結構:正，固定式 輸出電壓:4V 輸入電壓:最高 16V 電壓 - 壓降（標準）:0.28V @ 150mA 穩(wěn)壓器數(shù)量:1 電流 - 輸出:150mA 電流 - 限制（最?。?- 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:5-VFBGA 供應商設備封裝:5-uSMD 包裝:Digi-Reel® 其它名稱:LP2985AIBP-4.0DKR |
| LP3962ET-2.5/J7001212 | 制造商:Texas Instruments 功能描述: |
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