參數(shù)資料
型號(hào)： LM2671LDX-ADJ
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 穩(wěn)壓器
英文描述： SIMPLE SWITCHER Power Converter High Efficiency 500mA Step-Down Voltage Regulator with Features
中文描述： 1.25 A SWITCHING REGULATOR, 275 kHz SWITCHING FREQ-MAX, DSO16
封裝： LLP-16
文件頁(yè)數(shù)： 13/26頁(yè)
文件大?。?/td> 972K
代理商： LM2671LDX-ADJ
LM2671 Series Buck Regulator Design Procedure (Fixed Output)
(Continued)
PROCEDURE (Fixed Output Voltage Version)
7. Frequency Synchronization (optional)
The LM2671 (oscillator) can be synchronized to run with an
external oscillator, using the sync pin (pin 3). By doing so, the
LM2671 can be operated at higher frequencies than the
standard frequency of 260 kHz. This allows for a reduction in
the size of the inductor and output capacitor.
As shown in the drawing below, a signal applied to a RC filter at
the sync pin causes the device to synchronize to the frequency
of that signal. For a signal with a peak-to-peak amplitude of 3V
or greater, a 1 k
resistor and a 100 pF capacitor are suitable
values.
EXAMPLE (Fixed Output Voltage Version)
7. Frequency Synchronization (optional)
For all applications, use a 1 k
resistor and a 100 pF capacitor
for the RC filter.
INDUCTOR VALUE SELECTION GUIDES
(For Continuous Mode Operation)
10004229
FIGURE 4. LM2671-3.3
10004230
FIGURE 5. LM2671-5.0
10004231
FIGURE 6. LM2671-12
10004232
FIGURE 7. LM2671-ADJ
L
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相關(guān)PDF資料
PDF描述
LM2671LDX-5.0 SIMPLE SWITCHER Power Converter High Efficiency 500mA Step-Down Voltage Regulator with Features
LM2671LDX-3.3 SIMPLE SWITCHER Power Converter High Efficiency 500mA Step-Down Voltage Regulator with Features
LM2671LDX-12 SIMPLE SWITCHER Power Converter High Efficiency 500mA Step-Down Voltage Regulator with Features
LM2671LD-ADJ SIMPLE SWITCHER Power Converter High Efficiency 500mA Step-Down Voltage Regulator with Features
LM2671LD-5.0 SIMPLE SWITCHER Power Converter High Efficiency 500mA Step-Down Voltage Regulator with Features
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM2671M-12 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)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
LM2671M-12/NOPB 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)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
LM2671M-3.3 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)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
LM2671M-3.3/NOPB 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 HI EFF 500MA STEP- DOWN VLTG REG RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)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
LM2671M-3.3/NOPB 制造商:Texas Instruments 功能描述:DC/DC Converter IC
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