E-TDA7391PDTR - 2x40W Dual BTL Audio Amplifier | STMicroelectronics
MPN: E-TDA7391PDTR β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.25 | $5.25 |
| 10 | $4.72 | $47.20 |
| 100 | $4.2 | $420.00 |
| 500 | $3.78 | $1,890.00 |
| 1,000 | $3.36 | $3,360.00 |
Drop-in alternatives for E-TDA7391PDTR β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
TDA7391PD
β Drop-Inπ Reference alternative (not in catalog)
TDA7391PD13TR
β Drop-Inπ Reference alternative (not in catalog)
E-TDA7391PDTR Maximum Ratings & Electrical Characteristics
| Output Power | 2x40W at 4 ohm, 14.4V, 10% THD |
| Supply Voltage Range | 8V to 18V |
| Quiescent Current | 120mA |
| Amplifier Type | Class AB |
| Output Configuration | Bridge-Tied Load (BTL) |
| Number of Channels | 2 (Dual) |
| Package | PowerSO-20 |
| Mounting Type | Surface Mount |
| Operating Temperature Range | -40C to +105C |
| Standby Function | Yes |
| Mute Function | Yes |
| Short-Circuit Protection | Yes |
| Thermal Protection | Yes |
| Load Dump Protection | Yes |
| RoHS Status | Compliant |
E-TDA7391PDTR Pin Configuration
| Pin 1 | OUT1+ β Positive output for channel 1 |
| Pin 2 | OUT1- β Negative output for channel 1 |
| Pin 3 | GND β Ground |
| Pin 4 | IN1+ β Non-inverting input for channel 1 |
| Pin 5 | IN1- β Inverting input for channel 1 |
| Pin 6 | SVR β Supply voltage ripple rejection |
| Pin 7 | MUTE β Mute control input |
| Pin 8 | STBY β Standby control input |
| Pin 9 | IN2- β Inverting input for channel 2 |
| Pin 10 | IN2+ β Non-inverting input for channel 2 |
| Pin 11 | GND β Ground |
| Pin 12 | OUT2- β Negative output for channel 2 |
| Pin 13 | OUT2+ β Positive output for channel 2 |
| Pin 14 | VS β Power supply voltage |
| Pin 15 | VS β Power supply voltage |
| Pin 16 | GND β Ground |
| Pin 17 | GND β Ground |
| Pin 18 | GND β Ground |
| Pin 19 | GND β Ground |
| Pin 20 | GND β Ground |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
E-TDA7391PDTR is suitable for 6 applications: Car Radio Head Units, Multimedia Systems, Aftermarket Audio Amplifiers, Home Theater Systems, Portable PA Systems, Automotive Subwoofer Amplifiers.
Car Radio Head Units
The E-TDA7391PDTR is ideal for car radio head units, providing high output power (2x40W) to drive speakers directly. Its BTL configuration maximizes power from the 12V battery supply, and the standby/mute functions enable efficient power management. The device's protection features ensure reliable operation in automotive environments with voltage transients and temperature extremes.
Recommended
Multimedia Systems
In multimedia systems, the E-TDA7391PDTR delivers clean, high-power audio for entertainment units. Its low distortion and high linearity ensure accurate sound reproduction. The device's compact PowerSO-20 package allows for space-efficient PCB designs, and the exposed pad aids in thermal management for continuous operation.
Recommended
Aftermarket Audio Amplifiers
The E-TDA7391PDTR is suitable for aftermarket audio amplifiers, providing high power output for aftermarket speakers and subwoofers. Its robust protection features, including short-circuit and thermal protection, ensure durability in demanding installations. The device's wide supply voltage range accommodates various vehicle electrical systems.
Recommended
Home Theater Systems
The E-TDA7391PDTR can be used in home theater systems to drive satellite speakers or subwoofers. Its high output power and low distortion make it suitable for high-fidelity audio reproduction. The device's compact package and thermal performance allow for integration into slim home theater receivers.
Recommended
Portable PA Systems
For portable PA systems, the E-TDA7391PDTR provides high power output in a compact form factor, making it ideal for battery-powered or portable amplifiers. Its low quiescent current helps extend battery life, and the standby function allows for power saving when not in use. The device's thermal protection ensures safe operation in enclosed spaces.
Recommended
Automotive Subwoofer Amplifiers
The E-TDA7391PDTR is well-suited for automotive subwoofer amplifiers, delivering high power to drive subwoofers with deep bass. Its BTL configuration provides high voltage swing, and the device's protection features safeguard against short circuits and overheating. The PowerSO-20 package with exposed pad ensures efficient heat dissipation for sustained bass output.
Recommended
Recommended Products Summary
Engineering reference data for E-TDA7391PDTR β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TDA7391PD | TDA7391PD13TR | TDA7391 | TDA7851L |
|---|---|---|---|---|---|
| Package | PowerSO-20 | PowerSO-20 | PowerSO-20 | Multiwatt-15 | Flexiwatt-25 |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Output Power | 2x40W at 4 ohm, 14.4V, 10% THD | 2x40W at 4 ohm, 14.4V, 10% THD | 2x40W at 4 ohm, 14.4V, 10% THD | 2x40W at 4 ohm, 14.4V, 10% THD | 4x75W at 4 ohm, 14.4V, 10% THD |
| Number of Channels | 2 | 2 | 2 | 2 | 4 |
| Supply Voltage Range | 8V to 18V | 8V to 18V | 8V to 18V | 8V to 18V | 8V to 18V |
| Quiescent Current | 120mA | 120mA | 120mA | 120mA | [DATA_NEEDED] |
| Standby Function | Yes | Yes | Yes | Yes | Yes |
| Mute Function | Yes | Yes | Yes | Yes | Yes |
Key Differentiators
- Dual BTL configuration provides high output power from low supply voltage (vs TDA7851L)
- Surface-mount PowerSO-20 package enables automated assembly (vs TDA7391)
- Integrated protection features enhance reliability (vs TDA7391PD)
Design Notes
Provide adequate power supply decoupling with a 1000uF electrolytic capacitor and a 100nF ceramic capacitor close to the supply pins. This ensures stable operation and minimizes ripple that could affect audio quality.
The PowerSO-20 package has an exposed pad that must be soldered to a large copper area on the PCB to ensure proper thermal management. For continuous high-power operation, consider adding a heatsink or thermal vias to dissipate heat effectively.
Control the standby and mute pins with a microcontroller or a simple RC network to ensure a pop-free power-up sequence. Avoid floating these pins, as they may cause unpredictable behavior.
Compliance Information
RoHS compliance is indicated by distributor listings. Other compliance details are not explicitly stated in the provided data.
