- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄384598 > LM3407MY (NATIONAL SEMICONDUCTOR CORP) 350 mA, Constant Current Output Floating Buck Switching Converter for High Power LEDs PDF資料下載
參數(shù)資料
| 型號(hào)： | LM3407MY |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 顯示驅(qū)動(dòng)器 |
| 英文描述： | 350 mA, Constant Current Output Floating Buck Switching Converter for High Power LEDs |
| 中文描述： | LED DISPLAY DRIVER, PDSO8 |
| 封裝： | PLASTIC, MSOP-8 |
| 文件頁(yè)數(shù)： | 12/16頁(yè) |
| 文件大小： | 321K |
| 代理商： | LM3407MY |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)當(dāng)前第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)
30046625
FIGURE 6. Relationship between I
OUT
, I
L(peak)
and I
L(ripple)
Table 1
provides the suggested inductance of the inductor for
500 kHz and 1 MHz switching frequency operation with
C
OUT
= 4.7μF and I
L(ripple)
= 0.8 x I
OUT
TABLE 1. Suggested Inductance Value of the Inductor
VIN / V
Number of LED
4
1
2
3
5
6
7
Inductor selection table for F
SW
= 500 kHz, C
OUT
= 4.7μF (1μF for 1 LED)
5
22 μH
10
22 μH
22 μH
15
22 μH
22 μH
20
22 μH
33 μH
25
22 μH
33 μH
30
22 μH
47 μH
Inductor selection table for F
SW
= 1 MHz, C
OUT
= 4.7μF (1μF for 1 LED)
5
22 μH
10
22 μH
22 μH
15
22 μH
22 μH
20
22 μH
22 μH
25
22 μH
33 μH
30
22 μH
33 μH
22 μH
22 μH
33 μH
33 μH
22 μH
22 μH
33 μH
22 μH
22 μH
33 μH
22 μH
22 μH
22 μH
22 μH
22 μH
22 μH
33 μH
22 μH
22 μH
33 μH
22 μH
22 μH
22 μH
22 μH
22 μH
22 μH
FREE-WHEELING DIODE
The LM3407 is a non-synchronous floating buck converter
that requires an external free-wheeling diode to provide a path
for recirculating current from the inductor to the LED array
when the power switch is turned OFF. Selecting the free-
wheeling diode depends on both the output voltage and cur-
rent. The diode must have a rated reverse voltage higher than
the input voltage of the converter and a peak current rating
higher than the expected maximum inductor current. Using a
schottky diode with a low forward voltage drop can reduce
power dissipation and enhance conversion efficiency.
www.national.com
12
L
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LM3407MYX | 350 mA, Constant Current Output Floating Buck Switching Converter for High Power LEDs |
| LM3410YSDX | 525kHz/1.6MHz, Constant Current Boost and SEPIC LED Driver with Internal Compensation |
| LM3410 | 525kHz/1.6MHz, Constant Current Boost and SEPIC LED Driver with Internal Compensation |
| LM3410XMF | 525kHz/1.6MHz, Constant Current Boost and SEPIC LED Driver with Internal Compensation |
| LM3410XMFX | 525kHz/1.6MHz, Constant Current Boost and SEPIC LED Driver with Internal Compensation |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM3407MY/NOPB | 功能描述:開(kāi)關(guān)變換器、穩(wěn)壓器與控制器 350MA,CONST CRNT OUT SWITCHING CONVERTER RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開(kāi)關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| LM3407MYX | 制造商:Texas Instruments 功能描述:Conv DC-DC Single Step Down 4.5V to 30V 8-Pin MSOP EP T/R |
| LM3407MYX/NOPB | 功能描述:開(kāi)關(guān)變換器、穩(wěn)壓器與控制器 RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開(kāi)關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| LM3409 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:PFET Buck Controller for High Power LED Drives |
| LM3409_10 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:PFET Buck Controller for High Power LED Drives |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。