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LA4708N Fiches technique(PDF) 4 Page - Sanyo Semicon Device

No de pièce LA4708N
Description  Monolithic Linear IC For Car Stereos 20W 2-channel BTL AF Power Amplifier
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Fabricant  SANYO [Sanyo Semicon Device]
Site Internet  https://www.sanyo-av.com/us/
Logo SANYO - Sanyo Semicon Device

LA4708N Fiches technique(HTML) 4 Page - Sanyo Semicon Device

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background image
LA4708N
Sample Print Pattern
+
C5
C6
C7
C8
C9
R2
R3
R4
R5
VCC
OUT1
OUT2
GND
GND
C4
C3
C2
C1
R1
IN2
IN1
STB
+
+
+
+
1
Copper foil area 90
× 105mm2
Description of External Components
C1, C4
Input capacitors
2.2
μF is recommended. fL can be varied by C1, C4 capacitances to adjust the bass range.
C2
Decoupling capacitor
(ripple filter)
C3
Amplifier on time setting
capacitor
Approximately 0.8 second for 33
μF. Since the on time is proportional to this capacitance, it can
be set as desired by varying this capacitance. (Refer to the characteristics curve.)
C5
Power supply capacitor
C6, C7, C8, C9
Oscillation blocking capacitors
Use polyester film capacitors (Mylar capacitors) with good temperature characteristics. (R2, R3,
R4, and R5 used jointly.) Since stability may be affected slightly by the pattern layout, etc.,
0.1
μF or more is recommended.
R1
Standby switch current
limiting resistor
10k
Ω is recommended (when the applied voltage for the standby switch is 2.5V to 13.2V). This
resistor cannot be removed.
No. A1783-4/9


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