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Teilenummer | SC7422S |
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Beschreibung | 2CH AUDIO POWER AMPLIFIER | |
Hersteller | Silan Microelectronics | |
Logo | ||
Gesamt 8 Seiten SC7422
2-CH AUDIO POWER AMPLIFIER 2W x 2
DESCRIPTION
The SC7422 is a class AB power amplifier which designed for dual
audio purpose. It can deliver 2W × 2 power output to the 4 load in the
5V operation voltage. Total harmonic distortion is lower than 0.03%. The
output mode can be switched between the SE and BTL mode. The
volume also can be changed by a 32 steps volume controller. Moreover,
the SC7422 requires a few extra components in the application. It is
suitable for small or portable products.
SOP-16-375-1.27
FEATURES
* Operation voltage : 5V
* Output power : 2W×2(RL=4 )
* Low harmonics distortion (THD=0.03%)
* 32 steps volume control with 1.5dB per step from -45dB to 0dB
* Two output modes (SE and BTL) switched
* Low quiescent operation current
* No POPO noise when turn on/off
* Standby function, Low standby current(Is<0.7 A)
* Thermally protected
DIP-16-300-2.54
ORDERING INFORMATION
Device
SC7422
SC7422S
Package
DIP-16-300-2.54
SOP-16-375-1.27
APPLICATIONS
* LCD Monitors for TV
* Portable audio
* Multimedia audio
* Other audio applications
www.DataSheet4U.com
BLOCK DIAGRAM
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:1.0 2006.11.13
Page 1 of 8
SC7422
There is the formula of heat sinking for the SC7422:
JA = (TJ(max) -TA )/ PDISS
Where JA is the thermal resistance from junction to ambient, TJ(max) is the junction temperature, TA is ambient
temperature, PDISS is the power dissipation.
If the junction temperature remains below 150°C but the ambient temperature has reached to 50°C, the total
junction-to-ambient thermal resistance must be less than JA calculated as follows:
JA = (150°C - 50°C) / 2.6W =38.4°C/W.
Using JC=26°C /W, the heat-sink thermal resistance must be less than:
JA - JC = 12.4°C/W
So the SC7422 doesn’t need heat sink in the normal operation. In application, the copper foil which connects
GND on PCB can be utilized for heat sinking to maintain proper operation temperature.
TYPICAL APPLICATION CIRCUIT
www.DataSheet4U.com
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:1.0 2006.11.13
Page 6 of 8
6 Page | ||
Seiten | Gesamt 8 Seiten | |
PDF Download | [ SC7422S Schematic.PDF ] |
Teilenummer | Beschreibung | Hersteller |
SC7422 | 2CH AUDIO POWER AMPLIFIER | Silan Microelectronics |
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