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参数资料
| 型号： | TB2926HQ |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 26 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM25 |
| 封装： | 1 MM PITCH, PLASTIC, HZIP-25 |
| 文件页数： | 16/18页 |
| 文件大小： | 333K |
| 代理商： | TB2926HQ |
TB2926HQ
2006-11-27
7
5.
Prevention of speaker damage (in case of a layer short-circuit of the speaker)
When the DC resistance between the OUT
+ and OUT pins falls below 1 , the output current exceeds 4 A.
At this time, the protection circuit is activated to limit the current draw into the speaker.
This feature prevents the speaker from being damaged, as follows:
< Speaker damaging scenario >
A DC current of over 4 V is applied to the speaker due to an external circuit failure (Note 4).
(Abnormal DC output offset)
↓
The speaker impedance becomes 1
or less due to a layer short.
↓
A current of over 4 A flows into the speaker, damaging the speaker.
Figure 8
Note 4: An abnormal DC offset voltage is incurred when the input bias to the power IC is lost due to a leakage
current from a coupling capacitor at the input or a short-circuit between the IN and adjacent lines.
Current into the speaker
Speaker Impedance
Less than 4 A
About 1
4
The short-circuit protection is activated
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TB2929 | 制造商:Toshiba 功能描述:Four-Channel BTL power amplifier for Car Audio appliciton 4X47w |
| TB2929AHQ(O) | 制造商:Toshiba America Electronic Components 功能描述:AUDIO |
| TB2929HQ | 制造商:TOSHIBA 制造商全称:Toshiba Semiconductor 功能描述:45W × 4-ch BTL Audio Power IC,The TB2929HQ is a four-channel BTL power amplifier for car audio applications. |
| TB2929HQ(O) | 功能描述:音频放大器 45W x 4-CH class-AB car power amplifer RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| TB2932HQ | 制造商:Toshiba America Electronic Components 功能描述: |
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