LA4277 Ver la hoja de datos (PDF) - SANYO -> Panasonic
Número de pieza
componentes Descripción
Fabricante
LA4277 Datasheet PDF : 6 Pages
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LA4277
Notes on Using the IC
• Maximum ratings
When this IC is used near its maximum ratings, it is possible that a slight fluctuation in the operating conditions could
cause the maximum ratings to be exceeded, damaging the IC. Therefore, allow for an adequate safety margin in
regards to supply voltage, etc., so that the IC is never used under conditions that exceed its maximum ratings.
• Short circuit between pins
Applying power to the IC while a short circuit exists between two pins can cause damage or deterioration in the IC.
Therefore, after mounting the IC on a board, make sure that there are no solder bridges, etc., causing a short circuit
between any of the pins before applying power to the IC.
• Using the IC in a radio
When using this IC in a radio, make sure that there is enough distance between the IC and the bar antenna.
• Printed circuit pattern
When designing the printed circuit pattern, keep power, output, and ground lines thick and short, and determine the
placement of the pattern and the components in such a way as to prevent the generation of an I/O feedback loop.
In addition, power supply capacitor C8 and oscillation blocking capacitor C7 and C10 should be placed as close as
possible to the IC pins in order to prevent oscillation.
ICCO – VCC
50
45
40
35
30
25
20
15
10
5
0
0
5
10
15
20
25
Supply voltage, VCC — V
2
VCC = 20 V
10 RL = 8 Ω
7
THD – PO
5
3
2
1.0
7
5
3
2
0.1
7
5
3
0.1
f = 10 kHz
f = 100 Hz
f = 1 kHz
23
5 7 1.0
23
Output power, PO — W
Rg = 0
30
35
ILA00869
5 7 10
ILA00871
10
RL = 8 Ω
f = 1 kHz
8
PO – VCC
6
4
2
0
6
8 10 12 14 16 18 20 22 24 26
Supply voltage, VCC — V
ILA00870
THD – f
2
VCC = 20 V
RL = 8 Ω
1.0
PO = 0.5 W
7
5
3
2
0.1
CH1
7
5
CH2
3
10 2 3 5 7100 2 3 5 7 1 k 2 3 5 7 10 k 2 3 5
Frequency, f — Hz
ILA00872
No. 7095-4/6
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