Overview
The TAS5441-Q1 is a mono analog-input class-D audio amplifier designed for use in automotive environments. Developed by Texas Instruments, this device utilizes ultra-efficient class-D technology to reduce power consumption, heat, and peak currents in the electrical system. It is ideal for applications such as automotive emergency call (eCall), telematics, instrument cluster systems, and infotainment audio. The amplifier provides up to 22 W of output power into a 4 Ω load with less than 10% THD+N from a 14.4 Vdc automotive battery, making it suitable for start-stop support and operation from a backup battery.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| Input Voltage (V(PVDD)) | -0.3 | 30 | V | |
| Pulsed Supply Voltage (V(PVDD_MAX)) | -1 | 40 | V | |
| Supply Voltage Ramp Rate (ΔV(PVDD_RAMP)) | 15 | V/ms | ||
| Ambient Temperature (TA) | -40 | 125 | °C | |
| Output Power (4 Ω, THD+N ≤ 10%) | 22 | W | ||
| Load Impedance | 2 | 16 | Ω | |
| Voltage Gain (VO / VIN) | 19.25 | 20 | 20.75 | dB |
| Efficiency (at 22 W, 4 Ω) | % (Typical values vary, see datasheet for details) |
Key Features
- Ultra-efficient class-D technology for reduced power consumption and heat.
- Integrated load-dump protection up to 40 V.
- Onboard load diagnostics reporting through I2C.
- SpeakerGuard protection to limit output voltage and protect the speaker.
- Non-blocking I2C interface in standby mode.
- Overvoltage (OV) and overcurrent (OC) protection.
- Thermal protection and DC level detection.
- Compact 16-pin HTSSOP package with exposed thermal pad.
Applications
- Automotive Emergency Call (eCall) Amplifier.
- Telematics Systems.
- Instrument Cluster Systems.
- Infotainment Audio Systems.
Q & A
- What is the maximum output power of the TAS5441-Q1? The TAS5441-Q1 can deliver up to 22 W into a 4 Ω load with less than 10% THD+N.
- What is the operating voltage range of the TAS5441-Q1? The device operates from a DC supply voltage range of -0.3 V to 30 V.
- What type of protection does the TAS5441-Q1 offer? The device includes load-dump protection, overvoltage protection, overcurrent protection, thermal protection, and SpeakerGuard protection.
- How does the TAS5441-Q1 communicate with other devices? The TAS5441-Q1 uses an I2C serial communication bus for configuration and diagnostics.
- What is the typical efficiency of the TAS5441-Q1? The efficiency varies but is optimized for low power consumption; see the datasheet for specific efficiency values at different output powers.
- What package type is the TAS5441-Q1 available in? The device is available in a 16-pin HTSSOP package with an exposed thermal pad.
- What are the key applications of the TAS5441-Q1? Key applications include automotive emergency call (eCall), telematics, instrument cluster systems, and infotainment audio.
- How does the SpeakerGuard feature work? The SpeakerGuard feature limits the output voltage to protect the speaker from exceeding excursion limits and to improve battery life.
- What is the maximum ambient temperature the TAS5441-Q1 can operate in? The device can operate in ambient temperatures ranging from -40°C to 125°C.
- Does the TAS5441-Q1 support start-stop functionality? Yes, the device is suitable for start-stop support and can run from a backup battery when required.
