參數(shù)資料
型號(hào): LM2672-ADJMWC
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類(lèi): 穩(wěn)壓器
英文描述: 2.2 A SWITCHING REGULATOR, 275 kHz SWITCHING FREQ-MAX, UUC
封裝: WAFER
文件頁(yè)數(shù): 4/30頁(yè)
文件大?。?/td> 576K
代理商: LM2672-ADJMWC
LM2672 Series Buck Regulator Design Procedure (Fixed Output) (Continued)
PROCEDURE (Fixed Output Voltage Version)
EXAMPLE (Fixed Output Voltage Version)
7. Frequency Synchronization (optional)
The LM2672 (oscillator) can be synchronized to run with an
external oscillator, using the sync pin (pin 3). By doing so, the
LM2672 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,a1k
resistor and a 100 pF capacitor are suitable
values.
7. Frequency Synchronization (optional)
For all applications, usea1k
resistor and a 100 pF capacitor
for the RC filter.
LM2672
www.national.com
12
相關(guān)PDF資料
PDF描述
LM2672-12MDC 2.2 A SWITCHING REGULATOR, 275 kHz SWITCHING FREQ-MAX, UUC
LM2672M-3.3X 2.2 A SWITCHING REGULATOR, 275 kHz SWITCHING FREQ-MAX, PDSO8
LM2672M-5.0X 2.2 A SWITCHING REGULATOR, 275 kHz SWITCHING FREQ-MAX, PDSO8
LM2672LD-5.0/NOPB 2.2 A SWITCHING REGULATOR, 275 kHz SWITCHING FREQ-MAX, PDSO16
LM2672M-ADJX 2.2 A SWITCHING REGULATOR, 275 kHz SWITCHING FREQ-MAX, PDSO8
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