产品概览
TDA749213TR from ST is a dual-channel Class-D audio amplifier delivering 2x50W into 6 ohm. 10-30V supply. High efficiency eliminates heatsink. PowerSSO-36 package. TR suffix = tape-and-reel.
工作原理
Class-D amplifier uses PWM switching for high efficiency (>90%). Differential input with integrated bootstrap. Built-in protection: overtemperature, overcurrent, short circuit. Standby and mute controls.
Pin Description
| 别针组 | 名称 | 功能 |
|---|---|---|
| 输入 | INA/INB | Differential audio input |
| 输出 | OUTA/OUTB | Bridged speaker outputs |
| 控制 | STBY/MUTE/DIAG | Standby, mute, diagnostic |
应用
- Home audio systems
- TV sound bars
- Multimedia speakers
Alternative Models
| 制造商 | 部件编号 | 说明 |
|---|---|---|
| ST | TDA7498E | 2x80W version |
| TI | TPA3116D2DADR | 2x50W Class-D |