Moteur de recherche de fiches techniques de composants électroniques
  French  ▼
ALLDATASHEET.FR

X  

Preview PDF HTML

LM2622 Fiches technique(PDF) 13 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
No de pièce LM2622
Description  600kHz/1.3MHz Step-up PWM DC/DC Converter
PDF  16 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricant  NSC [National Semiconductor (TI)]
Site Internet  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM2622 Fiches technique(HTML) 13 Page - National Semiconductor (TI)

Back Button LM2622 Datasheet HTML 8Page - National Semiconductor (TI) LM2622 Datasheet HTML 9Page - National Semiconductor (TI) LM2622 Datasheet HTML 10Page - National Semiconductor (TI) LM2622 Datasheet HTML 11Page - National Semiconductor (TI) LM2622 Datasheet HTML 12Page - National Semiconductor (TI) LM2622 Datasheet HTML 13Page - National Semiconductor (TI) LM2622 Datasheet HTML 14Page - National Semiconductor (TI) LM2622 Datasheet HTML 15Page - National Semiconductor (TI) LM2622 Datasheet HTML 16Page - National Semiconductor (TI)  
Zoom Inzoom in Zoom Outzoom out
 13 / 16 page
background image
Application Information (Continued)
appears across C6 when the switch is closed. When the
switch opens, C6 is referenced to the 8V output minus a
diode drop, which raises the voltage at C6 with respect to
ground to about 24V. Hence, in the fourth stage, C7 is
charged to 24V when the switch is open. From the first stage
to the last, there are three diode drops that make the output
voltage closer to 24 - 3xVDIODE (about 22.8V if a 0.4V
forward drop is assumed).
TABLE 1. Components For Circuits in
Figure 3
Component
600 kHz
1.3 MHz
L
10µH
4.7µH
COUT1
10µF
22µF
COUT2
10µF
NOT USED
CC
3.9nF
1.5nF
CFB1
0.1µF
15nF
CFB2
NOT USED
560pF
CIN
10µF
22µF
C1
4.7µF
4.7µF
Component
600 kHz
1.3 MHz
C2
0.1µF
0.1µF
C4
1µF
1µF
C5
1µF
1µF
C6
1µF
1µF
C7
1µF
1µF
RFB1
40.2k
Ω
91k
Ω
RFB2
7.5k
Ω
18k
Ω
RC
5.1k
Ω
10k
Ω
D1
MBRM140T3
MBRM140T3
D2
BAT54S
BAT54S
D3
D4
BAT54S
BAT54S
D5
D6
BAT54S
BAT54S
D7
600 kHz Operation
10127331
FIGURE 4. 600 kHz operation
www.national.com
13



Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16


Fiches technique Télécharger

Go To PDF Page


Lien URL



ALLDATASHEET vous a-t-il été utile ?  [ DONATE ] 

À propos de Alldatasheet   |   Publicité   |   Contactez-nous   |   Politique de confidentialité   |   Lien vers la fiche technique    |   Echange de liens   |   Fabricants
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com