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參數(shù)資料
| 型號(hào)： | LM2678-12 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | SIMPLE SWITCHER High Efficiency 5A Step-Down Voltage Regulator |
| 中文描述： | 高效率的SIMPLE SWITCHER第5A降壓穩(wěn)壓器 |
| 文件頁(yè)數(shù)： | 15/27頁(yè) |
| 文件大?。?/td> | 459K |
| 代理商： | LM2678-12 |
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Application Hints
(Continued)
Step 5:
An input capacitor for this example will require at
least a 35V WV rating with an rms current rating of 1.75A
(1/2 Iout max). From Table 2 it can be seen that C12, a
33μF/35V capacitor from Sprague, has the highest voltage/
current rating of the surface mount components and that two
of these capacitor in parallel will be adquate.
Step 6:
From Table 5 a 5A or more Schottky diode must be
selected. For surface mount diodes with a margin of safety
on the voltage rating one of two diodes can be used:
MBRD1545CT
6TQ045S
Step 7:
A 0.01μF capacitor will be used for Cboost.
LLP PACKAGE DEVICES
The LM2678 is offered in the 14 lead LLP surface mount
package to allow for a significantly decreased footprint with
equivalent power dissipation compared to the TO-263. For
details on mounting and soldering specifications, refer to
Application Note AN-1187.
L
www.national.com
15
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LM2678-ADJ | SIMPLE SWITCHER High Efficiency 5A Step-Down Voltage Regulator |
| LM2678 | SIMPLE SWITCHER High Efficiency 5A Step-Down Voltage Regulator |
| LM2679S-12 | SIMPLE SWITCHER 5A Step-Down Voltage Regulator with Adjustable Current Limit |
| LM2679S-3.3 | SIMPLE SWITCHER 5A Step-Down Voltage Regulator with Adjustable Current Limit |
| LM2679S-5.0 | SIMPLE SWITCHER 5A Step-Down Voltage Regulator with Adjustable Current Limit |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM2678-3.3 | 制造商:NSC 制造商全稱(chēng):National Semiconductor 功能描述:SIMPLE SWITCHER High Efficiency 5A Step-Down Voltage Regulator |
| LM2678-5.0 | 制造商:NSC 制造商全稱(chēng):National Semiconductor 功能描述:SIMPLE SWITCHER High Efficiency 5A Step-Down Voltage Regulator |
| LM2678-ADJ | 制造商:NSC 制造商全稱(chēng):National Semiconductor 功能描述:SIMPLE SWITCHER High Efficiency 5A Step-Down Voltage Regulator |
| LM2678LD-12 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| LM2678LD-3.3 | 制造商:Rochester Electronics LLC 功能描述:5A STEP DOWN SIMP SWITCH 260KH - Bulk |
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