Motore di ricerca datesheet componenti elettronici
  Italian  ▼
ALLDATASHEETIT.COM

X  

LM3224 Scheda tecnica(PDF) 10 Page - Texas Instruments

Click here to check the latest version.
Il numero della parte LM3224
Spiegazioni elettronici  615kHz/1.25MHz Step-up PWM DC/DC Converter
Download  26 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Produttore elettronici  TI1 [Texas Instruments]
Homepage  http://www.ti.com
Logo TI1 - Texas Instruments

LM3224 Scheda tecnica(HTML) 10 Page - Texas Instruments

Back Button LM3224 Datasheet HTML 6Page - Texas Instruments LM3224 Datasheet HTML 7Page - Texas Instruments LM3224 Datasheet HTML 8Page - Texas Instruments LM3224 Datasheet HTML 9Page - Texas Instruments LM3224 Datasheet HTML 10Page - Texas Instruments LM3224 Datasheet HTML 11Page - Texas Instruments LM3224 Datasheet HTML 12Page - Texas Instruments LM3224 Datasheet HTML 13Page - Texas Instruments LM3224 Datasheet HTML 14Page - Texas Instruments Next Button
Zoom Inzoom in Zoom Outzoom out
 10 / 26 page
background image
:
RFB1 = RFB2 x
VOUT - 1.26
1.26
VOUT =
VIN
1-D
, D' = (1-D) =
VIN
VOUT
LM3224
SNVS277B – DECEMBER 2004 – REVISED SEPTEMBER 2005
www.ti.com
(1)
where D is the duty cycle of the switch, D and D
′ will be required for design calculations.
SETTING THE OUTPUT VOLTAGE
The output voltage is set using the feedback pin and a resistor divider connected to the output as shown in the
typical operating circuit. The feedback pin voltage is 1.26V, so the ratio of the feedback resistors sets the output
voltage according to the following equation:
(2)
SOFT-START CAPACITOR
The LM3224 has a soft-start pin that can be used to limit the inductor inrush current on start-up. The external SS
pin is used to tailor the soft-start for a specific application but is not required for all applications and can be left
open when not needed. When used, a current source charges the external soft-start capacitor, Css. The soft-
start time can be estimated as:
Tss = Css*1.24V/Iss
(3)
THERMAL SHUTDOWN
The LM3224 includes thermal shutdown protection. If the die temperature exceeds 140°C the regulator will shut
off the power switch, significantly reducing power dissipation in the device. The switch will remain off until the die
temperature is reduced to approximately 120°C. If the cause of the excess heating is not removed (excessive
ambient temperature, excessive power dissipation, or both) the device will continue to cycle on and off in this
manner to protect from damage.
10
Submit Documentation Feedback
Copyright © 2004–2005, Texas Instruments Incorporated
Product Folder Links: LM3224


Codice articolo simile - LM3224

Produttore elettroniciIl numero della parteScheda tecnicaSpiegazioni elettronici
logo
National Semiconductor ...
LM3224 NSC-LM3224 Datasheet
920Kb / 18P
   615kHz/1.25MHz Step-up PWM DC/DC Converter
LM3224 NSC-LM3224 Datasheet
917Kb / 18P
   615kHz/1.25MHz Step-up PWM DC/DC Converter
logo
Texas Instruments
LM3224 TI-LM3224 Datasheet
1Mb / 27P
[Old version datasheet]   LM3224 615kHz/1.25MHz Step-up PWM DC/DC Converter
logo
National Semiconductor ...
LM3224MM-ADJ NSC-LM3224MM-ADJ Datasheet
920Kb / 18P
   615kHz/1.25MHz Step-up PWM DC/DC Converter
LM3224MM-ADJ NSC-LM3224MM-ADJ Datasheet
917Kb / 18P
   615kHz/1.25MHz Step-up PWM DC/DC Converter
More results

Descrizione simile - LM3224

Produttore elettroniciIl numero della parteScheda tecnicaSpiegazioni elettronici
logo
National Semiconductor ...
LM3224 NSC-LM3224 Datasheet
920Kb / 18P
   615kHz/1.25MHz Step-up PWM DC/DC Converter
LM3224 NSC-LM3224_05 Datasheet
917Kb / 18P
   615kHz/1.25MHz Step-up PWM DC/DC Converter
logo
Texas Instruments
LM3224 TI-LM3224_15 Datasheet
1Mb / 27P
[Old version datasheet]   LM3224 615kHz/1.25MHz Step-up PWM DC/DC Converter
logo
National Semiconductor ...
LM2700 NSC-LM2700 Datasheet
478Kb / 17P
   600kHz/1.25MHz, 2.5A, Step-up PWM DC/DC Converter
logo
Texas Instruments
LM2700 TI1-LM2700_14 Datasheet
1Mb / 25P
[Old version datasheet]   600kHz/1.25MHz, 2.5A, Step-up PWM DC/DC Converter
LM2700Q TI1-LM2700Q Datasheet
370Kb / 19P
[Old version datasheet]   600kHz/1.25MHz, 2.5A, Step-up PWM DC/DC Converter
LM2700Q TI1-LM2700Q_15 Datasheet
1Mb / 25P
[Old version datasheet]   600kHz/1.25MHz, 2.5A, Step-up PWM DC/DC Converter
logo
National Semiconductor ...
LM2700 NSC-LM2700_04 Datasheet
512Kb / 17P
   600kHz/1.25MHz, 2.5A, Step-up PWM DC/DC Converter
logo
Texas Instruments
LM2700Q-Q1 TI-LM2700Q-Q1_15 Datasheet
1Mb / 25P
[Old version datasheet]   LM2700Q 600kHz/1.25MHz, 2.5A, Step-up PWM DC/DC Converter
LM2700 TI-LM2700_15 Datasheet
1Mb / 26P
[Old version datasheet]   LM2700 600kHz/1.25MHz, 2.5A, Step-up PWM DC/DC Converter
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


Scheda tecnica Scarica

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEETIT.COM
Lei ha avuto il aiuto da alldatasheet?  [ DONATE ] 

Di alldatasheet   |   Richest di pubblicita   |   contatti   |   Privacy Policy   |   scambio Link   |   Ricerca produttore
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