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參數(shù)資料
| 型號： | LM9073S |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | Dual High Current Low-Dropout System Regulator |
| 中文描述： | DUAL OUTPUT, FIXED POSITIVE LDO REGULATOR, PSSO11 |
| 封裝： | TO-263, 11 PIN |
| 文件頁數(shù)： | 15/18頁 |
| 文件大?。?/td> | 718K |
| 代理商： | LM9073S |
Application Information
(Continued)
In the event that an oscillation is present, input bypassing
can also help de-tune the resonance. Figure 7 illustrates two
input bypassing approaches. The straight forward addition of
a larger valued electrolitic capacitor could suffice. In this
case however, if reverse battery connections are possibility it
is necessary to add a series protection diode as shown to
prevent damaging the polarized input capacitor.
An alternative input bypassing scheme is also shown. This
eliminates the use of polarized input capacitors and a series
protection diode. The values shown were derived empirically
in a representative typical application. Appropriate values for
any given application require experimentation.
Thermal Management
The LM9073 is packaged in both a TO-263 surface mount
power package and a narrow lead-pitch TO-220 package. To
obtain operation over the highest possible load current and
input voltage ranges, care must be taken to control the oper-
ating temperature of the device. Thermal shutdown protec-
tion is built with a threshold above 150C Conventional heat
sinking techniques can be used with the TO-220 package.
When applying the TO-263 package on-board heat sinking is
important to prevent thermal shutdown. More copper foil
area under the tab of the device will directly reduce the oper-
ating junction temperature. Use of a double sided board with
vias between two planes of copper as shown in Figure 8 will
improve performance ad can optimize the PC board surface
area required.
Figure 7. Input Bypassing
DS101296-22
Figure 8. Typical TO-263 PC Board Heatsinking
DS101296-23
L
www.national.com
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LM9073SX | 功能描述:IC REG LDO 5V .7A/.1A TO-263-11 RoHS:否 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 |
| LM9073T | 制造商:Rochester Electronics LLC 功能描述:5V DUAL OUTPUT TRACKING REGL - Bulk |
| LM9073T/NOPB | 功能描述:IC REG LDO 5V .7A/.1A TO-220-11 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 |
| LM9074 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:System Voltage Regulator with Keep-Alive ON/OFF |
| LM9074EP | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Enhanced Plastic System Voltage Regulator with Keep-Alive ON/OFF Control |
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