Zakładka z wyszukiwarką danych komponentów
  Polish  ▼
ALLDATASHEET.PL

X  

LA4555 Arkusz danych(PDF) 5 Page - Sanyo Semicon Device

Numer części LA4555
Szczegółowy opis  2-Channel AF Power Amplifier for Radio, Tape Recorder Use
Download  10 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Producent  SANYO [Sanyo Semicon Device]
Strona internetowa  https://www.sanyo-av.com/us/
Logo SANYO - Sanyo Semicon Device

LA4555 Arkusz danych(HTML) 5 Page - Sanyo Semicon Device

  LA4555 Datasheet HTML 1Page - Sanyo Semicon Device LA4555 Datasheet HTML 2Page - Sanyo Semicon Device LA4555 Datasheet HTML 3Page - Sanyo Semicon Device LA4555 Datasheet HTML 4Page - Sanyo Semicon Device LA4555 Datasheet HTML 5Page - Sanyo Semicon Device LA4555 Datasheet HTML 6Page - Sanyo Semicon Device LA4555 Datasheet HTML 7Page - Sanyo Semicon Device LA4555 Datasheet HTML 8Page - Sanyo Semicon Device LA4555 Datasheet HTML 9Page - Sanyo Semicon Device Next Button
Zoom Inzoom in Zoom Outzoom out
 5 / 10 page
background image
LA4555
No.1697–5/10
Proper Cares in Using LA4555-Applied Set
1. If the transformer regulation is not as specified, the supply voltage drops momentarily when the motor is an AC-
powered set is turned ON. In this case, hum noise may be generated. So, be careful of the transformer regulation.
2. DC muting
To apply DC muting by controlling the NF pin, it is recommended to use
the circuit configuration shown right. The potential at point A is set to 3.5
to 4V.
3. Pop noise
If pop noise generated at the time of power ON/OFF disturbs you, con-
nect a resistor of approximately 620
Ω across the middle point and GND.
4. Slider contact noise of variable resistor
Since the input circuit uses PNP transistors, no input coupling capacitor is
required. However, if slider contact noise of the variable resistor presents
any problem, connect a capacitor in series with input.
Thermal Design
Since the DIP-12F package is such that the Cu-foiled area of the printed circuit board is used to dissipate heat, make the
Cu-foiled area in the vicinity of the heat sink of the IC as large as possible when designing the printed circuit board. The
use of the Cu-foiled area indicated by shading in the above-mentioned sample printed circuit pattern makes it possible
to dissipate more heat. Power dissipation Pd is increased depending on the supply voltage and load. So, it is recom-
mended to use the printed circuit board together with the heat sink. The following is a formula to be used to calculate Pd
(for stereo use). For AC power supply, however, it is recommended to actually measure Pd on the transformer of each
set. For bridge amplifier use, Pd is calculated at 1/2 of the load.
(1) DC power supply
Pd max=
+ Icco · VCC (For stereo use) ..... (1)
(2) AC power supply
VCC2
: Supply voltage at quiescent mode
VCC (Pd) : Supply voltage at Pd max
VCC1
: Supply voltage at maximum output
r
: Voltage regulation VCC2 – VCC1
VCC1
Icco
: Quiescent current
Pd max=
+ Icco · VCC (Pd) (For stereo use) .............. (2)
where
VCC (Pd)=
Example of Heat Sink Mounting Method
The heat sink must be of such a shape as to be able to dissipate heat from the IC plastic area and fin area and is soldered to
the printed circuit board as shown below. For the size of the heat sink, refer to the Pd – Ta characteristic. The material of the
heat sink is recommended to be copper or iron which is solderable. It is recommended to apply silicone grease to the IC
plastic area to reduce thermal resistance between the heat sink and the IC plastic area.
Example of Heat Sink Mounting
VCC2
π2R
L
VCC(Pd)2
π2R
L
(1+r) VCC1
r · VCC1
√2 · π · R
L
RL
Po max
1+
×


Podobny numer części - LA4555

ProducentNumer częściArkusz danychSzczegółowy opis
logo
Sanyo Semicon Device
LA4550 SANYO-LA4550 Datasheet
284Kb / 9P
   2-Channel AF Power Amp for Radio, Tape Recorder Use
LA4557 SANYO-LA4557 Datasheet
273Kb / 8P
   2-Channel AF Power Amp for Radio, Tape Recorder Use
LA4558 SANYO-LA4558 Datasheet
282Kb / 8P
   2-Channel AF Power Amp
More results

Podobny opis - LA4555

ProducentNumer częściArkusz danychSzczegółowy opis
logo
Sanyo Semicon Device
LA4557 SANYO-LA4557 Datasheet
273Kb / 8P
   2-Channel AF Power Amp for Radio, Tape Recorder Use
LA4550 SANYO-LA4550 Datasheet
284Kb / 9P
   2-Channel AF Power Amp for Radio, Tape Recorder Use
LA4126 SANYO-LA4126 Datasheet
143Kb / 1P
   2-CHANNEL AF POWER AMP, FOR RADIO, TAPE RECORDER
LA4180 SANYO-LA4180 Datasheet
56Kb / 1P
   2-CHANNEL AF POWER AMP FOR TAPE RECORDER RADIO
LA4190 SANYO-LA4190 Datasheet
49Kb / 1P
   2-CHANNEL AF POWER AMP FOR TAPE RECORDER RADIO
LA4125 SANYO-LA4125 Datasheet
85Kb / 1P
   2-CHANNEL AF POWER AMP, FOR RADIO, TAPE RECORDER
LA4505 SANYO-LA4505 Datasheet
131Kb / 1P
   2-CHANNEL AF POWER AMPLIFIER FOR RADIO CASSETTE(15V)
logo
NTE Electronics
NTE1016 NTE-NTE1016 Datasheet
15Kb / 1P
   Integrated Circuit AF Small-Signal Amplifier for Tape Recorder
NTE1463 NTE-NTE1463 Datasheet
72Kb / 2P
   Integrated Circuit AF Power Amp for Tape Recorder
logo
Sony Corporation
CXA1262N SONY-CXA1262N Datasheet
203Kb / 10P
   PRE-AMPLIFIER/ POWER-AMPLIFIER FOR TAPE RECORDER
More results


Html Pages

1 2 3 4 5 6 7 8 9 10


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