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參數資料
| 型號： | LA4302T |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 4 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO20 |
| 封裝： | 0.225 INCH, TSSOP-20 |
| 文件頁數： | 8/12頁 |
| 文件大小： | 178K |
| 代理商： | LA4302T |
LA4302T
No.7462-5/12
Figure 1 Standard BTL Usage Example
20
19
18
17
16
15
14
13
12
11
12
3
45
67
8
910
RL
VCC
(12V)
OUT 2
(-OUT)
OUT 1
(+OUT)
Power
GND
(Heatsink)
Power
GND
(Heatsink)
Power GND
(Heatsink)
Power GND
(Heatsink)
Not
Use
NC
STBY/
Mute
Signal
GND
IN 1
IN 2
SE
Filter
Ripple
Filter
NC
BTL/SE
SW
Output Amp2
Input Amp2
Output Amp1
Input Amp1
SE
BTL
+
+
+
1000
F
0.022
F
0.1
F
C4
+
100
F
C3
0.22
F
C2
0.22
F
C1
3
1
2
C5
8
10
(The input impedance is 60k
)
Notes
1. Figure 2 presents another input method as an
alternative to that shown in the BTL usage example.
Applications may use this alternative method, but
note that the input impedance will be 30k
. (The
value of the capacitor must be doubled to achieve
the same low band frequency characteristics as
those of the standard usage example.)
2. Oscillations may appear in the output waveform
under conditions that depend on the IC operating
conditions and the connected load. If this problem
occurs, the oscillation stability can be improved by
inserting a 0.022
F capacitor (use a capacitor with
excellent temperature characteristics) and a 10
resistor in series in the positions shown in dotted
lines in figure 1. Verify the quality of the output
waveform in an actual end product.
3. Pins 7 and 19 must not be connected to any signal;
they must be left open. (This is because they are
connected inside the chip.) Pin 7 can be connected
to ground through a 0.047
F capacitor as shown in
figure 3, Standard SE Usage Example, on the next
page.
20
19
18
123
Power GND
(Heatsink)
Power GND
(Heatsink)
Not
Use
BTL IN
IN 2
IN 1
NC
Input Amp2
Input Amp1
+
(The input
impedance is
30k
) *3
Figure 2 BTL Usage Example
(Alternative Input Pin Connection Method)
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LA-4306 | 制造商:Ideal Industries Inc 功能描述: |
| LA-4308 | 制造商:Ideal Industries Inc 功能描述: |
| LA-4311 | 制造商:Ideal Industries Inc 功能描述: |
| LA4341R11 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Optoelectronic |
| LA43G-G | 制造商:LIGITEK 制造商全稱:LIGITEK electronics co., ltd. 功能描述:LED ARRAY |
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