LA4425A 데이터 시트보기 (PDF) - ON Semiconductor

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LA4425A

5W Power Amplifier with Very Few External Parts for Car Radio and Car Stereo

ON Semiconductor 

Sample Application Circuit

LA4425A

Ci 2.2μF

+1

2

5

LA4425A

3

VCC 13.2V

+ 1000μF

Co 1000μF

4+

speaker

4Ω

• On-chip overvoltage protection

• On-chip thermal protection

• On-chip pop noise reducing circuit

• On-chip output D.C. short protection

Pin Voltage at VCC = 13.2V

Characteristics

Input

Pin No.

Pin voltage

(reference value)

1

(≈ 2VBE)

1.4V

Small signal

GND

2

0V

Large signal

GND

3

0V

Output

4

(≈ 1/2VCC)

6.5V

VCC

5

(VCC)

13.2V

IC Usage Notes

Maximum ratings

If the IC is used in the vicinity of the maximum ratings, even a slight variation in conditions may cause the maximum

ratings to be exceeded, thereby leading to a breakdown.

Printed circuit board

When drawing the printed circuit pattern, refer to the sample printed circuit pattern. Be careful not to form a feedback

loop between input and output.

Comparison of External Components

External Parts

Our ICs now in use

Output coupling capacitor



Input coupling capacitor



Bootstrap capacitor



Feedback capacitor



Filter capacitor



Phase compensation capacitor



Oscillation correction polyester



film capacitor

Oscillation correction resistor



Total

8 pcs.

Note: The power supply capacitor is not counted as a power IC part.

LA4425A





-

-

-

-

-

-

2 pcs.

No.A0195-3/9

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