Overview
The TDA7491LP13TR is a dual BTL class-D audio amplifier produced by STMicroelectronics. It is designed for use in LCD TVs and monitors, leveraging its high efficiency and compact packaging to minimize the need for external components. The amplifier features an exposed-pad-down (EPD) package, which eliminates the requirement for a separate heatsink. This design enhances thermal management and reduces overall system complexity.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Continuous Output Power | 5 W + 5 W | RL = 8 Ω, THD = 10% at VCC = 9 V |
| Continuous Output Power | 5 W + 5 W | RL = 4 Ω, THD = 10% at VCC = 6.6 V |
| Supply Voltage Range | 5 V - 14 V | |
| Efficiency | 90% | |
| Gain Settings | 20 dB, 26 dB, 30 dB, 32 dB | |
| Operating Temperature | -40°C to 85°C | |
| Package Type | PowerSSO-36 EPD |
Key Features
- High efficiency (η = 90%) reducing heat generation and power consumption.
- Filterless operation, minimizing the external component count.
- No ‘pop’ at turn-on/off, ensuring smooth operation.
- Standby and mute features for power management and noise reduction.
- Short-circuit protection and thermal overload protection for reliability.
- Externally synchronizable for flexible system integration.
- Differential inputs to minimize common-mode noise.
Applications
The TDA7491LP13TR is primarily designed for use in LCD TVs and monitors. Its high efficiency, compact packaging, and robust protection features make it suitable for a variety of audio applications where reliability and performance are critical.
- LCD TVs
- Monitors
- Industrial audio systems
Q & A
- What is the TDA7491LP13TR?
The TDA7491LP13TR is a dual BTL class-D audio amplifier produced by STMicroelectronics.
- What are the key applications of the TDA7491LP13TR?
It is designed for use in LCD TVs, monitors, and industrial audio systems.
- What is the output power of the TDA7491LP13TR?
The amplifier delivers 5 W + 5 W continuous output power with RL = 8 Ω, THD = 10% at VCC = 9 V, and 5 W + 5 W with RL = 4 Ω, THD = 10% at VCC = 6.6 V.
- What is the efficiency of the TDA7491LP13TR?
The amplifier has a high efficiency of 90%.
- Does the TDA7491LP13TR require a separate heatsink?
No, it does not require a separate heatsink due to its exposed-pad-down (EPD) package.
- What are the gain settings available on the TDA7491LP13TR?
The amplifier offers four selectable, fixed gain settings of nominally 20 dB, 26 dB, 30 dB, and 32 dB.
- Does the TDA7491LP13TR have protection features?
Yes, it includes short-circuit protection and thermal overload protection.
- Is the TDA7491LP13TR externally synchronizable?
Yes, it is externally synchronizable.
- What is the operating temperature range of the TDA7491LP13TR?
The operating temperature range is -40°C to 85°C.
- What package type does the TDA7491LP13TR use?
The amplifier is packaged in a PowerSSO-36 EPD package.
