參數(shù)資料
型號: LM2731YMFX
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: 穩(wěn)壓器
英文描述: 0.6/1.6 MHz Boost Converters With 22V Internal FET Switch in SOT-23
中文描述: 2 A SWITCHING REGULATOR, 800 kHz SWITCHING FREQ-MAX, PDSO5
封裝: SOT-23, 5 PIN
文件頁數(shù): 15/16頁
文件大?。?/td> 528K
代理商: LM2731YMFX
Application Hints
(Continued)
P
(SW)
= DC x I
IND
(AVE)
2
x R
DS
(ON)
There will be some switching losses as well, so some derat-
ing needs to be applied when calculating IC power dissipa-
tion.
INDUCTOR SUPPLIERS
Recommended suppliers of inductors for this product in-
clude, but are not limited to Sumida, Coilcraft, Panasonic,
TDK and Murata. When selecting an inductor, make certain
that the continuous current rating is high enough to avoid
saturation at peak currents. A suitable core type must be
used to minimize core (switching) losses, and wire power
losses must be considered when selecting the current rating.
SHUTDOWN PIN OPERATION
The device is turned off by pulling the shutdown pin low. If
this function is not going to be used, the pin should be tied
directly to V
IN
. If the SHDN function will be needed, a pull-up
resistor must be used to V
IN
(approximately 50k-100k
rec-
ommended). The SHDN pin must not be left unterminated.
L
www.national.com
15
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