參數(shù)資料
型號(hào): LM2671-5.0MDC
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: 穩(wěn)壓器
英文描述: 1.25 A SWITCHING REGULATOR, 275 kHz SWITCHING FREQ-MAX, UUC
封裝: DIE
文件頁(yè)數(shù): 30/30頁(yè)
文件大?。?/td> 612K
代理商: LM2671-5.0MDC
Test Circuit and Layout Guidelines
10004222
CIN - 22 F, 50V Tantalum, Sprague “199D Series”
COUT - 47 F, 25V Tantalum, Sprague “595D Series”
D1 - 3.3A, 50V Schottky Rectifier, IR 30WQ05F
L1 - 68 H Sumida #RCR110D-680L
CB - 0.01 F, 50V Ceramic
FIGURE 2. Standard Test Circuits and Layout Guides
Fixed Output Voltage Versions
10004223
CIN - 22 F, 50V Tantalum, Sprague “199D Series”
COUT - 47 F, 25V Tantalum, Sprague “595D Series”
D1 - 3.3A, 50V Schottky Rectifier, IR 30WQ05F
L1 - 68 H Sumida #RCR110D-680L
R1 - 1.5 k
,1%
CB - 0.01 F, 50V Ceramic
For a 5V output, select R2 to be 4.75 k
,1%
where VREF = 1.21V
Use a 1% resistor for best stability.
FIGURE 3. Standard Test Circuits and Layout Guides
Adjustable Output Voltage Versions
LM2671
www.national.com
9
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