Zakładka z wyszukiwarką danych komponentów
  Polish  ▼
ALLDATASHEET.PL

X  

STK433-840N-E Arkusz danych(PDF) 10 Page - ON Semiconductor

Numer części STK433-840N-E
Szczegółowy opis  4ch class-AB Audio Power IC
Download  12 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Producent  ONSEMI [ON Semiconductor]
Strona internetowa  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

STK433-840N-E Arkusz danych(HTML) 10 Page - ON Semiconductor

Back Button STK433-840N-E Datasheet HTML 4Page - ON Semiconductor STK433-840N-E Datasheet HTML 5Page - ON Semiconductor STK433-840N-E Datasheet HTML 6Page - ON Semiconductor STK433-840N-E Datasheet HTML 7Page - ON Semiconductor STK433-840N-E Datasheet HTML 8Page - ON Semiconductor STK433-840N-E Datasheet HTML 9Page - ON Semiconductor STK433-840N-E Datasheet HTML 10Page - ON Semiconductor STK433-840N-E Datasheet HTML 11Page - ON Semiconductor STK433-840N-E Datasheet HTML 12Page - ON Semiconductor  
Zoom Inzoom in Zoom Outzoom out
 10 / 12 page
background image
STK433-840N-E
No.A2108-10/12
A Thermal Design Tip For STK433-840N-E Amplifier
[Thermal Design Conditions]
The thermal resistance (θc-a) of the heat-sink which manages the heat dissipation inside the Hybrid IC will be
determined as follow:
(Condition 1) The case temperature (Tc) of the Hybrid IC should not exceed 125°C
Pd
 c-a + Ta  125°C··································································· (1)
Where Ta : the ambient temperature for the system
(Condition 2) The junction temperature of each power transistor should not exceed 150°C
Pd
 c-a + Pd/N  j-c + Ta  150°C·················································· (2)
Where N : the number of transistors (two for 1 channel , ten for channel)
θj-c : the thermal resistance of each transistor (see specification)
Note that the power consumption of each power transistor is assumed to be equal to the total power dissipation (Pd)
divided by the number of transistors (N).
From the formula (1) and (2), we will obtain:
c-a  (125  Ta)/Pd ······································································ (1)’
c-a  (150  Ta)/Pd  j-c/N ··························································· (2)’
The value which satisfies above formula (1)’ and (2)’ will be the thermal resistance for a desired heat-sink.
Note that all of the component except power transistors employed in the Hybrid IC comply with above conditions.
[Example of Thermal Design]
Generally, the power consumption of actual music signals are being estimated by the continuous signal of
1/8 PO max. (Note that the value of 1/8 PO max may be varied from the country to country.)
(Sample of STK433-840N-E ; 25W×4ch)
If VCC is ±25V, and RL is 6, then the total power dissipation (Pd) of inside Hybrid IC is as follow;
Pd = 55.0W (at 3.125W output power,1/8 of PO max)
There are eight (8) transistors in Audio Section of this Hybrid IC, and thermal resistance (θj-c) of each transistor is
4.2°C/W. If the ambient temperature (Ta) is guaranteed for 50°C, then the thermal resistance (θc-a) of a desired heat-
sink should be;
From (1)’
c-a  (125  50)/55.0
 1.36
From (2)’
c-a  (150  50)/55.0  4.2/8
 1.29
Therefore, in order to satisfy both (1)’ and (2)’, the thermal resistance of a desired Heat-sink will be 1.29°C/W.
[Note]
Above are reference only. The samples are operated with a constant power supply. Please verify the conditions when
your system is actually implemented.


Podobny numer części - STK433-840N-E

ProducentNumer częściArkusz danychSzczegółowy opis
logo
Sanyo Semicon Device
STK433-840N-E SANYO-STK433-840N-E Datasheet
270Kb / 12P
   4channel class-AB Audio Power IC 40W 횞 4ch
More results

Podobny opis - STK433-840N-E

ProducentNumer częściArkusz danychSzczegółowy opis
logo
ON Semiconductor
STK433-890N-E ONSEMI-STK433-890N-E Datasheet
459Kb / 12P
   4ch class-AB Audio Power IC
April, 2013
logo
Sanyo Semicon Device
STK433-840N-E SANYO-STK433-840N-E Datasheet
270Kb / 12P
   4channel class-AB Audio Power IC 40W 횞 4ch
STK433-890N-E SANYO-STK433-890N-E Datasheet
264Kb / 12P
   4channel class-AB Audio Power IC 80W 횞 4ch
STK433-040N-E SANYO-STK433-040N-E Datasheet
295Kb / 11P
   2channel class-AB Audio Power IC
logo
ON Semiconductor
STK433-130N-E ONSEMI-STK433-130N-E Datasheet
375Kb / 11P
   2ch class-AB Audio Power IC
April, 2013
logo
Sanyo Semicon Device
STK404-140N-E SANYO-STK404-140N-E Datasheet
213Kb / 11P
   1ch class-AB Audio Power IC
logo
ON Semiconductor
STK404-070N-E ONSEMI-STK404-070N-E Datasheet
284Kb / 10P
   1ch class-AB Audio Power IC
April, 2013
STK404-140N-E ONSEMI-STK404-140N-E Datasheet
332Kb / 11P
   1ch class-AB Audio Power IC
April, 2013
STK433-330N-E ONSEMI-STK433-330N-E Datasheet
376Kb / 11P
   3ch class-AB Audio Power IC
April, 2013
STK404-120N-E ONSEMI-STK404-120N-E Datasheet
331Kb / 11P
   1ch class-AB Audio Power IC
April, 2013
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12


Arkusz danych Pobierz

Go To PDF Page


Link URL




Polityka prywatności
ALLDATASHEET.PL
Czy Alldatasheet okazała się pomocna?  [ DONATE ] 

O Alldatasheet   |   Reklama   |   Kontakt   |   Polityka prywatności   |   Linki   |   Lista producentów
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