- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄361024 > LM2596T-12 (NATIONAL SEMICONDUCTOR CORP) SIMPLE SWITCHER Power Converter 150 kHz 3A Step-Down Voltage Regulator PDF資料下載
參數(shù)資料
| 型號： | LM2596T-12 |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SIMPLE SWITCHER Power Converter 150 kHz 3A Step-Down Voltage Regulator |
| 中文描述： | 7.5 A SWITCHING REGULATOR, 173 kHz SWITCHING FREQ-MAX, PZFM5 |
| 封裝： | BENT STAGGERED, TO-220, 5 PIN |
| 文件頁數(shù)： | 9/31頁 |
| 文件大小： | 736K |
| 代理商： | LM2596T-12 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁當(dāng)前第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁
Test Circuit and Layout Guidelines
(Continued)
As in any switching regulator, layout is very important. 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 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 lC 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,
lC groundpath 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. (See application section for more
information.)
Adjustable Output Voltage Versions
01258323
where V
REF
= 1.23V
Select R
1
to be approximately 1 k
, use a 1% resistor for best stability.
C
IN
—470 μF, 50V, Aluminum Electrolytic Nichicon “PL Series”
C
OUT
—220 μF, 35V Aluminum Electrolytic, Nichicon “PL Series”
D1
—5A, 40V Schottky Rectifier, 1N5825
L1
—68 μH, L38
R1
—1 k
, 1%
C
FF
—See Application Information Section
FIGURE 1. Standard Test Circuits and Layout Guides
L
www.national.com
9
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LM2596T-3.3 | SIMPLE SWITCHER Power Converter 150 kHz 3A Step-Down Voltage Regulator |
| LM2596T-5.0 | SIMPLE SWITCHER Power Converter 150 kHz 3A Step-Down Voltage Regulator |
| LM2596T-ADJ | SIMPLE SWITCHER Power Converter 150 kHz 3A Step-Down Voltage Regulator |
| LM2596 | SIMPLE SWITCHER Power Converter 150 KHz 3A Step-Down Voltage Regulator |
| LM2596S-5.0 | SIMPLE SWITCHER Power Converter 150 kHz 3A Step-Down Voltage Regulator |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM2596T12 | 制造商:Texas Instruments 功能描述:SWITCHING REG 3A 12V 2596 TO2205 |
| LM2596T-12/LB03 | 制造商:Texas Instruments 功能描述:Conv DC-DC Single Inv/Step Down 4.5V to 40V 5-Pin(5+Tab) TO-220 Rail |
| LM2596T-12/LB05 | 制造商:Texas Instruments 功能描述:Conv DC-DC Single Inv/Step Down 4.5V to 40V 5-Pin(5+Tab) TO-220 Rail |
| LM2596T-12/LF02 | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)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(fēng)格:SMD/SMT |
| LM2596T-12/LF03 | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)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(fēng)格:SMD/SMT |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。