- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄358825 > LM2674LDX-3.3 (NATIONAL SEMICONDUCTOR CORP) SIMPLE SWITCHER Power Converter High Efficiency 500 mA Step-Down Voltage Regulator PDF資料下載
參數(shù)資料
| 型號： | LM2674LDX-3.3 |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SIMPLE SWITCHER Power Converter High Efficiency 500 mA Step-Down Voltage Regulator |
| 中文描述： | 1.25 A SWITCHING REGULATOR, 275 kHz SWITCHING FREQ-MAX, DSO16 |
| 封裝： | LLP-16 |
| 文件頁數(shù)： | 23/26頁 |
| 文件大?。?/td> | 947K |
| 代理商： | LM2674LDX-3.3 |
Application Information
(Continued)
Layout is very important in switching regulator designs. Rap-
idly switching currents associated with wiring inductance can
generate voltage transients which can cause problems. For
minimal inductance and ground loops, the wires indicated by
heavy lines (in
Figure 2
and
Figure 3
) should be wide
printed circuit traces and should be kept as short as
possible.
For best results, external components should be
located as close to the switcher IC as possible using ground
plane construction or single point grounding.
If
open core inductors are used,
special care must be
taken as to the location and positioning of this type of induc-
tor. Allowing the inductor flux to intersect sensitive feedback,
IC ground path, and C
OUT
wiring can cause problems.
When using the adjustable version, special care must be
taken as to the location of the feedback resistors and the
associated wiring. Physically locate both resistors near the
IC, and route the wiring away from the inductor, especially an
open core type of inductor.
LLP Package Devices
The LM2674 is offered in the 16 lead LLP surface mount
package to allow for increased power dissipation compared
to the SO-8 and DIP.
The Die Attach Pad (DAP) can and should be connected to
PCB Ground plane/island. For CAD and assembly guide-
lines
refer
to
Application
power.national.com.
Note
AN-1187
at
http://
L
www.national.com
23
相關PDF資料 |
PDF描述 |
|---|---|
| LM2674LDX-5.0 | SIMPLE SWITCHER Power Converter High Efficiency 500 mA Step-Down Voltage Regulator |
| LM2674LDX-ADJ | SIMPLE SWITCHER Power Converter High Efficiency 500 mA Step-Down Voltage Regulator |
| LM2674M-5.0 | SIMPLE SWITCHER Power Converter High Efficiency 500 mA Step-Down Voltage Regulator |
| LM2674N-5.0 | SIMPLE SWITCHER Power Converter High Efficiency 500 mA Step-Down Voltage Regulator |
| LM2674N-ADJ | SIMPLE SWITCHER Power Converter High Efficiency 500 mA Step-Down Voltage Regulator |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LM2674LDX-5.0 | 功能描述:直流/直流開關轉換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
| LM2674LDX-5.0/NOPB | 功能描述:直流/直流開關轉換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
| LM2674LDX-ADJ | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:SIMPLE SWITCHER Power Converter High Efficiency 500 mA Step-Down Voltage Regulator |
| LM2674M-12 | 功能描述:直流/直流開關轉換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
| LM2674M-12/NOPB | 功能描述:直流/直流開關轉換器 PWR CONVERTER HI EFF 500MA SD VLTG REG RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
發(fā)布緊急采購，3分鐘左右您將得到回復。