TDA75610S-48X - 4x45W Quad BTL Car Radio Amplifier | STMicroelectronics
MPN: TDA75610S-48X ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.5 | $8.50 |
| 10 | $7.65 | $76.50 |
| 100 | $6.8 | $680.00 |
| 500 | $6.12 | $3,060.00 |
| 1,000 | $5.5 | $5,500.00 |
Drop-in alternatives for TDA75610S-48X — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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TDA75610S-48X
✅ Drop-In✓ 99,999 In Stock
$5.5 / Unit
View Datasheet →TDA75610S-48X
✅ Drop-In✓ 99,999 In Stock
$5.5 / Unit
View Datasheet →TDA75610S-48X
✅ Drop-In✓ 99,999 In Stock
$5.5 / Unit
View Datasheet →TDA75610S-48X Maximum Ratings & Electrical Characteristics
| Output Power (4Ω, 14.4V, 10% THD) | 45W per channel |
| Number of Channels | 4 |
| Supply Voltage Range | 6V to 18V |
| Quiescent Current | 120mA |
| Signal-to-Noise Ratio | 90dB |
| Total Harmonic Distortion (THD) | 0.02% at 1kHz, 1W |
| Output Offset Voltage | ±20mV |
| Standby Current | 1µA |
| Mute Attenuation | 80dB |
| Thermal Resistance (junction-to-case) | 1.5°C/W |
| Operating Temperature Range | -40°C to +105°C |
| Package | Flexiwatt27 |
| Mounting Type | Through-Hole |
| RoHS Status | Compliant |
| Protection Features | DC offset, overcurrent, overvoltage, thermal shutdown |
TDA75610S-48X Pin Configuration
| Pin 1 | OUT1+ — Positive output for channel 1 |
| Pin 2 | OUT1- — Negative output for channel 1 |
| Pin 3 | GND — Ground |
| Pin 4 | OUT2+ — Positive output for channel 2 |
| Pin 5 | OUT2- — Negative output for channel 2 |
| Pin 6 | VCC — Power supply |
| Pin 7 | OUT3+ — Positive output for channel 3 |
| Pin 8 | OUT3- — Negative output for channel 3 |
| Pin 9 | GND — Ground |
| Pin 10 | OUT4+ — Positive output for channel 4 |
| Pin 11 | OUT4- — Negative output for channel 4 |
| Pin 12 | VCC — Power supply |
| Pin 13 | IN1 — Audio input for channel 1 |
| Pin 14 | IN2 — Audio input for channel 2 |
| Pin 15 | IN3 — Audio input for channel 3 |
| Pin 16 | IN4 — Audio input for channel 4 |
| Pin 17 | STBY — Standby control (active high) |
| Pin 18 | MUTE — Mute control (active high) |
| Pin 19 | DIAG — Diagnostic output |
| Pin 20 | GND — Ground |
| Pin 21 | VCC — Power supply |
| Pin 22 | GND — Ground |
| Pin 23 | VCC — Power supply |
| Pin 24 | GND — Ground |
| Pin 25 | VCC — Power supply |
| Pin 26 | GND — Ground |
| Pin 27 | VCC — Power supply |
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
TDA75610S-48X is suitable for 6 applications: Car Radio Head Units, Aftermarket Car Audio Amplifiers, OEM Infotainment Systems, Marine Audio Systems, Home Theater Systems, Portable PA Systems.
Car Radio Head Units
The TDA75610S-48X is ideal for car radio head units where high output power (45W per channel) and low distortion (0.02% THD) are required to drive door speakers. Its wide supply voltage range (6V to 18V) ensures stable operation during engine start and load dump transients. The integrated protection features (DC offset, overcurrent, thermal shutdown) safeguard the amplifier and speakers in the harsh automotive environment. In a typical head unit, the TDA75610S-48X is placed between the audio processor and the speaker terminals, with the standby and mute pins controlled by the microcontroller for power sequencing and pop-free startup. The BTL configuration eliminates output coupling capacitors, reducing component count and improving low-frequency response. For optimal performance, use a heatsink with thermal resistance below 2°C/W and ensure adequate PCB copper area for heat spreading. The high SNR of 90dB ensures minimal background noise, enhancing the listening experience.
Recommended
Aftermarket Car Audio Amplifiers
For aftermarket car audio amplifiers, the TDA75610S-48X provides a cost-effective solution for multi-channel amplification. Its 45W per channel output into 4Ω loads is sufficient for most aftermarket speaker systems. The low quiescent current (120mA) and standby current (1µA) help minimize battery drain when the amplifier is idle. The Flexiwatt27 package with exposed thermal pad allows for efficient heatsinking, essential for continuous high-power operation. In a typical aftermarket amplifier, the TDA75610S-48X is used in a bridge-tied load configuration to maximize output power without requiring a higher supply voltage. The mute and standby functions enable remote turn-on/off via the head unit's remote wire. For 2Ω loads, the output power increases but so does power dissipation, requiring a larger heatsink. The protection features prevent damage from speaker shorts or over-temperature, ensuring reliability in demanding installations.
Recommended
OEM Infotainment Systems
In OEM infotainment systems, the TDA75610S-48X is used to drive speakers in the vehicle's audio system. Its automotive-grade temperature range (-40°C to +105°C) and robust protection features make it suitable for the demanding conditions inside a car. The high output power ensures clear audio even at high volumes, while the low THD maintains sound quality. The device's diagnostic pin can be used for fault detection, enabling the infotainment system to report amplifier status to the driver. In a typical infotainment system, the TDA75610S-48X is controlled via I2C or GPIO for standby and mute, and the audio inputs are connected to the head unit's audio processor. The BTL output configuration allows direct connection to speakers without coupling capacitors, simplifying the design. For thermal management, the amplifier is mounted on a heatsink that is often part of the system's chassis, ensuring efficient heat dissipation.
Recommended
Marine Audio Systems
The TDA75610S-48X can be used in marine audio systems where reliability and power are key. Its wide supply voltage range and protection features make it resilient to voltage fluctuations common in marine electrical systems. The low quiescent current helps preserve battery life when the boat is not in use. In a marine audio system, the amplifier is typically mounted in a dry, ventilated area to avoid moisture exposure. The BTL configuration provides high output power to drive marine-grade speakers, which often have higher impedance (4Ω or 8Ω). The thermal shutdown protection prevents damage if the amplifier overheats due to inadequate ventilation. For marine applications, conformal coating may be applied to the PCB to protect against corrosion. The standby and mute pins can be connected to a switch or the head unit's remote wire for power management.
Recommended
Home Theater Systems
Although designed for automotive use, the TDA75610S-48X can be repurposed for home theater systems where a compact, high-power amplifier is needed. Its 45W per channel output is sufficient for driving bookshelf speakers in a small to medium-sized room. The low THD and high SNR ensure high-fidelity audio reproduction. In a home theater application, the amplifier can be powered by a 12V DC supply, making it easy to integrate into existing systems. The BTL configuration allows for a simple power supply design, as no negative rail is required. The mute and standby functions can be controlled by a microcontroller or a simple switch. For thermal management, a heatsink with a thermal resistance of 2°C/W or lower is recommended. The protection features provide peace of mind, preventing damage to speakers in case of a fault.
Recommended
Portable PA Systems
The TDA75610S-48X can be used in portable PA systems that require high output power from a battery supply. Its wide supply voltage range (6V to 18V) allows operation from various battery configurations, such as 12V lead-acid or 14.4V lithium-ion. The low quiescent current extends battery life during idle periods. In a portable PA system, the amplifier is often paired with a mixer and speakers, and the BTL output provides sufficient volume for outdoor events. The standby and mute functions can be used to conserve power when the system is not in use. The thermal shutdown protection prevents damage if the amplifier is operated at high power for extended periods without adequate cooling. For portable applications, a heatsink with a fan may be necessary to maintain safe operating temperatures.
Recommended
Recommended Products Summary
Engineering reference data for TDA75610S-48X — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TDA75610S-48X | TDA75610S-48X | TDA75610S-48X |
|---|---|---|---|---|
| Package | Flexiwatt27 | Flexiwatt27 | Flexiwatt27 | Flexiwatt27 |
| Output Power (4Ω, 14.4V, 10% THD) | 45W | 45W | 45W | 45W |
| Supply Voltage Range | 6V to 18V | 6V to 18V | 6V to 18V | 6V to 18V |
| Quiescent Current | 120mA | 120mA | 120mA | 120mA |
| Signal-to-Noise Ratio | 90dB | 90dB | 90dB | 90dB |
| THD at 1kHz, 1W | 0.02% | 0.02% | 0.02% | 0.02% |
| Standby Current | 1µA | 1µA | 1µA | 1µA |
| Protection Features | DC offset, overcurrent, overvoltage, thermal shutdown | DC offset, overcurrent, overvoltage, thermal shutdown | DC offset, overcurrent, overvoltage, thermal shutdown | DC offset, overcurrent, overvoltage, thermal shutdown |
Key Differentiators
- High output power of 45W per channel (vs TDA75610S-48X)
- Wide supply voltage range of 6V to 18V (vs TDA75610S-48X)
- Integrated protection features (vs TDA75610S-48X)
Design Notes
The TDA75610S-48X can dissipate significant power at high output levels. For example, at 45W per channel into 4Ω, the power dissipation can exceed 50W. With a junction-to-case thermal resistance of 1.5°C/W, a heatsink with a thermal resistance of 1°C/W or lower is recommended to keep the junction temperature below 150°C. Ensure the heatsink is properly attached to the exposed thermal pad using thermal interface material.
Place a 1000µF electrolytic capacitor on the VCC pin and a 0.1µF ceramic capacitor close to the IC for high-frequency decoupling. The ground pins should be connected to a solid ground plane to minimize noise. Keep the audio input traces short and shielded to avoid interference. The output traces should be wide enough to handle the high current.
Do not operate the amplifier without a load connected, as this can cause output stage damage. Ensure the standby and mute pins are properly controlled to avoid pop noise during power-up. The diagnostic pin can be used to monitor fault conditions; connect it to a microcontroller for system monitoring. Avoid exceeding the absolute maximum supply voltage of 18V, as this can trigger overvoltage protection.
Compliance Information
RoHS compliant per STMicroelectronics product page. Not AEC-Q100 qualified, but designed for automotive applications.
