- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄2082 > LA4708N-E (ON Semiconductor)IC BTL PWR AMP 20W 2CH SIP18H PDF資料下載
參數(shù)資料
| 型號： | LA4708N-E |
| 廠商： | ON Semiconductor |
| 文件頁數(shù)： | 5/9頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC BTL PWR AMP 20W 2CH SIP18H |
| 標準包裝： | 15 |
| 類型： | AB 類 |
| 輸出類型： | 2 通道（立體聲） |
| 在某負載時最大輸出功率 x 通道數(shù)量： | 30W x 2 @ 2 歐姆 |
| 電源電壓： | 9 V ~ 16 V |
| 特點： | 消除爆音，靜音，短路和熱保護，待機 |
| 安裝類型： | 通孔 |
| 供應商設備封裝： | 18-SIPH |
| 封裝/外殼： | 18-SIP，裸露焊盤 |
| 包裝： | 管件 |
LA4708N
No. A1783-5/9
Features of IC Inside and Usage Notes
Standby function
Pin 5 is the standby switch pin. The amplifier is
turned on by applying approximately 2.5V or more
to this pin through an external resistor (R1).
If voltage in excess of 13.2V is to be applied to the
standby switch, calculate the value of R1 using the
following formula so that the current flowing into
pin 5 is 500
A or less:
R1 =
10k
Mute function
Pin 6 is the connector for the capacitor that determines the on time in order to prevent pop noise. By grounding this
pin, the amplifier can implement mute operation. In this case, the recovery time depends on C3.
How to reduce pop noise
Although the LA4708N reduces pop noise, an electrolytic capacitor of between 0.47 and 2.2F can be connected
between pin 8 and the pre-GND to further reduce pop noise that occurs when power supply is turned on/off
(standby switch on/off). The larger the capacitance, the lower the frequency of pop noise, and it is barely audible,
but sound residue of the sound signal is liable to linger when power is turned off. Pin 8 is the bias pin for the output
amplifier and normally is left open.
Protectors
In an output-to-ground and output-to-VCC short protector system configuration, if a DC resistor is connected
between amplifier output pin and GND, the protector may operate, causing the amplifier not to start operating.
Therefore, as a general rule, no DC resistor should be connected between amplifier output pin and GND.
In order to prevent damage or degradation which may be caused by abnormally heated IC, the LA4708N has a thermal
shutdown protector. Accordingly, if the IC junction temperature (Tj) climbs to around 170 to 180
C due to inadequate
heat dissipation, the thermal shutdown protector will operate to control the output gradually into attenuation.
Also be fully careful of handling other protectors built in the LA4708N.
Miscellaneous
Since pins 1 and 9, which are unused, are connected internally, they must be left open.
Pin 10 is an NC pin (no internal connection).
Applied voltage
1.4V
500
A
相關PDF資料 |
PDF描述 |
|---|---|
| LDS6000NQGI | IC SENSOR TCH PURETOUCH 28VFQFPN |
| LDS6003PYGI | IC SENSOR TCH PURETOUCH 28SSOP |
| LDS6005NQGI | IC SENSOR TCH PURETOUCH 28VFQFPN |
| LDS6020PYGI | IC SENSOR TCH PURETOUCH 28SSOP |
| LDS6023NQGI | IC SENSOR TCH PURETOUCH 28VFQFPN |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LA4708NF-MB-E | 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| LA47201L-N-E | 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| LA47201-N-E | 制造商:ON Semiconductor 功能描述:CARAUDIO AMPLIFIER BTL4CH - Ammo Pack 制造商:ON Semiconductor 功能描述:FNFLD / CARAUDIO AMPLIFIER BTL4CH |
| LA47202P | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Monolithic Linear IC Four-Channel BTL Power Amplifier for Car Audio Systems |
| LA47202P-E | 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
發(fā)布緊急采購，3分鐘左右您將得到回復。