Os motores de busca de Datasheet de Componentes eletrônicos
  Portuguese  ▼
ALLDATASHEETPT.COM

X  

LM2574DW-ADJR2G Folha de dados(PDF) 8 Page - ON Semiconductor

Nome de Peças LM2574DW-ADJR2G
Descrição Electrónicos  0.5 A, Adjustable Output Voltage, Step-Down Switching Regulator
Download  26 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricante Electrônico  ONSEMI [ON Semiconductor]
Página de início  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

LM2574DW-ADJR2G Folha de dados(HTML) 8 Page - ON Semiconductor

Back Button LM2574DW-ADJR2G Datasheet HTML 4Page - ON Semiconductor LM2574DW-ADJR2G Datasheet HTML 5Page - ON Semiconductor LM2574DW-ADJR2G Datasheet HTML 6Page - ON Semiconductor LM2574DW-ADJR2G Datasheet HTML 7Page - ON Semiconductor LM2574DW-ADJR2G Datasheet HTML 8Page - ON Semiconductor LM2574DW-ADJR2G Datasheet HTML 9Page - ON Semiconductor LM2574DW-ADJR2G Datasheet HTML 10Page - ON Semiconductor LM2574DW-ADJR2G Datasheet HTML 11Page - ON Semiconductor LM2574DW-ADJR2G Datasheet HTML 12Page - ON Semiconductor Next Button
Zoom Inzoom in Zoom Outzoom out
 8 / 26 page
background image
LM2574, NCV2574
www.onsemi.com
8
Figure 16. Test Circuit and Layout Guidelines
D1
1N5819
L1
330
mH
Output
7
1
Feedback
Cout
220
mF
Cin
22
mF
LM2574
Fixed Output
1
3
4ON/OFF
Pwr
Gnd
Vin
Load
Vout
D1
1N5819
L1
330
mH
Output
7
1
Feedback
Cout
220
mF
Cin
22
mF
LM2574
Adjustable
1
Vin
Load
Vout
5.0 V
Fixed Output Voltage Versions
Adjustable Output Voltage Versions
Vout + Vref 1.0 )
R2
R1
R2
+ R1
Vout
V
ref
–1.0
Where Vref = 1.23 V, R1
between 1.0 k
W and 5.0 kW
R2
6.12 k
R1
2.0 k
7.0 - 40 V
Unregulated
DC Input
2
Sig
Gnd
3
4ON/OFF
Pwr
Gnd
2
Sig
Gnd
7.0 V - 40 V
Unregulated
DC Input
Cin
−22
mF, 60 V, Aluminium Electrolytic
Cout
220
mF, 25 V, Aluminium Electrolytic
D1
Schottky, 1N5819
L1
330
mH, (For 5.0 Vin, 3.3 Vout, use 100 mH)
R1
2.0 k, 0.1%
R2
6.12 k, 0.1%
NOTE: Pin numbers in ( ) are for the SO−16W package.
(12)
(3)
(6)
(4)
(5)
(14)
(12)
(3)
(14)
(6)
(4)
(5)
PCB LAYOUT GUIDELINES
As in any switching regulator, the layout of the printed
circuit board is very important. Rapidly switching currents
associated with wiring inductance, stray capacitance and
parasitic inductance of the printed circuit board traces can
generate
voltage
transients
which
can
generate
electromagnetic interferences (EMI) and affect the desired
operation. As indicated in the Figure 16, to minimize
inductance and ground loops, the length of the leads
indicated by heavy lines should be kept as short as possible.
For best results, single−point grounding (as indicated) or
ground plane construction should be used.
On the other hand, the PCB area connected to the Pin 7
(emitter of the internal switch) of the LM2574 should be
kept to a minimum in order to minimize coupling to sensitive
circuitry.
Another sensitive part of the circuit is the feedback. It is
important to keep the sensitive feedback wiring short. To
assure this, physically locate the programming resistors near
to the regulator, when using the adjustable version of the
LM2574 regulator.


Nº de peça semelhante - LM2574DW-ADJR2G

Fabricante ElectrônicoNome de PeçasFolha de dadosDescrição Electrónicos
logo
ON Semiconductor
LM2574DW-ADJR2G ONSEMI-LM2574DW-ADJR2G Datasheet
296Kb / 26P
   0.5 A, Adjustable Output Voltage, Step?묭own Switching Regulator
August, 2006 ??Rev. 8
More results

Descrição semelhante - LM2574DW-ADJR2G

Fabricante ElectrônicoNome de PeçasFolha de dadosDescrição Electrónicos
logo
ON Semiconductor
LM2574 ONSEMI-LM2574 Datasheet
279Kb / 28P
   0.5 A, Adjustable Output Voltage, Step-Down Switching Regulator
February, 2002 ??Rev. 5
LM2574 ONSEMI-LM2574_06 Datasheet
296Kb / 26P
   0.5 A, Adjustable Output Voltage, Step?묭own Switching Regulator
August, 2006 ??Rev. 8
LM2575T-15G ONSEMI-LM2575T-15G Datasheet
497Kb / 28P
   1.0 A, Adjustable Output Voltage, Step-Down Switching Regulator
June, 2009 ??Rev. 11
LM2575T-005G ONSEMI-LM2575T-005G Datasheet
461Kb / 28P
   1.0 A, Adjustable Output Voltage, Step-Down Switching Regulator
June, 2009 ??Rev. 11
LM2575 ONSEMI-LM2575_09 Datasheet
497Kb / 28P
   1.0 A, Adjustable Output Voltage, Step-Down Switching Regulator
June, 2009 ??Rev. 11
LM2575 ONSEMI-LM2575 Datasheet
382Kb / 26P
   1.0 A, Adjustable Output Voltage, Step-Down Switching Regulator
May, 2004 ??Rev. 6
LM2575T-ADJ ONSEMI-LM2575T-ADJ Datasheet
497Kb / 28P
   1.0 A, Adjustable Output Voltage, Step-Down Switching Regulator
June, 2009 ??Rev. 11
LM2594 ONSEMI-LM2594 Datasheet
560Kb / 25P
   0.5 A, Step-Down Switching Regulator
January, 2009 ??Rev. 0
logo
KODENSHI_AUK CORP.
SN317MPI KODENSHI-SN317MPI Datasheet
376Kb / 8P
   [ 0.5 A Adjustable Output ] Positive Voltage Regulator
logo
ON Semiconductor
LM2575 ONSEMI-LM2575_05 Datasheet
364Kb / 28P
   1.0 A, Adjustable Output Voltage, Step?묭own Switching Regulator
November, 2005 ??Rev. 8
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26


Folha de dados Download

Go To PDF Page


Ligação URL




Privacy Policy
ALLDATASHEETPT.COM
ALLDATASHEET é útil para você?  [ DONATE ] 

Sobre Alldatasheet   |   Publicidade   |   Contato conosco   |   Privacy Policy   |   roca de Link   |   Lista de Fabricantes
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