参数资料
| 型号： | LA4708N-E |
| 厂商： | ON Semiconductor |
| 文件页数： | 4/9页 |
| 文件大小： | 0K |
| 描述： | IC BTL PWR AMP 20W 2CH SIP18H |
| 标准包装： | 15 |
| 类型： | AB 类 |
| 输出类型： | 2 通道（立体声） |
| 在某负载时最大输出功率 x 通道数量： | 30W x 2 @ 2 欧姆 |
| 电源电压： | 9 V ~ 16 V |
| 特点： | 消除爆音，静音，短路和热保护，待机 |
| 安装类型： | 通孔 |
| 供应商设备封装： | 18-SIPH |
| 封装/外壳： | 18-SIP，裸露焊盘 |
| 包装： | 管件 |
LA4708N
No. A1783-4/9
Sample Print Pattern
+
C5
C6
C7
C8
C9
R2
R3
R4
R5
VCC
OUT1
OUT2
GND
C4
C3
C2
C1
R1
IN2
IN1
STB
+
1
D
N
G
E
R
P
Copper foil area 90
× 105mm2
Description of External Components
C1, C4
Input capacitors
2.2
F 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
F. 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
F or more is recommended.
R1
Standby switch current
limiting resistor
10k
is recommended (when the applied voltage for the standby switch is 2.5V to 13.2V). This
resistor cannot be removed.
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