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IC AMP CLASS D STER 50W 32HTSSOP
1 Features
• Longer Battery-Operating Time:
– Ultra-Low Idle Current: 15 mA at 12 V
• 2 × 50 W Into a 4-Ω Load at 21 V, 10% THD+N
• Wide Voltage Range: 4.5 V to 26 V
• Highly Efficient Class-D Operation
– Hybrid Modulation Scheme Dynamically Reduces Power Loss
– Low Rds(on) of 90-mΩ Enables > 90% Efficiency
• Pop-and-Click Noise Suppression
• Supports Stereo, Mono BTL and Mono PBTL
• Multiple Switching Frequencies:
– AM Avoidance
– Master and Slave Synchronization
– 300-KHz to 1.2-MHz Switching Frequencies
• Selectable Gains: 20 dB, 26 dB, 32 dB, 36 dB
• Programmable Power Limit
• Supports Both Single and Dual Power Supply
• Integrated Protections with Error Report:
– Overvoltage, Undervoltage, Overtemperature, DC-Detect, and Short Circuit
• Thermally Enhanced Package
– DAD (32-Pin HTSSOP PowerPAD™ Up)
• Performance Upgrade of the TPA3116D2
– 70% Less Idle Current; Pin-to-Pin Compatible
2 Applications
• Speaker Docks
• Bluetooth® and Wi-Fi Speakers
• Voice Operated Speakers or Smart Speakers
• Sound Bars
• Bookshelf Stereo System
3 Description
The TPA3126D2 is a 50-W, stereo, low-idle-current Class-D amplifier in a thermally enhanced package. The TPA3126D2 includes TI's proprietary hybrid modulation scheme, which dynamically reduces idle current at low power levels to extend the battery life of portable audio systems, like bluetooth speakers.
To further simply the design, the Class-D amplifier integrates full protection features including short circuit, thermal shutdown, overvoltage, undervoltage, and DC speaker protection. Faults are reported back to the processor to prevent devices from being damaged during overload conditions.
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