The HT4863MTE is a Class AB/D switchable stereo audio power amplifier from Holtek. It is designed to deliver high-quality audio output while minimizing power consumption. This amplifier is particularly suitable for portable audio devices where battery life is a crucial factor.

Applications:

• Portable media players
• Mobile phones
• Laptop computers
• Tablets
• Bluetooth speakers

Features:

• Class AB/D switchable operation
• High output power: Up to 2.6W per channel into 4Ω (Class D)
• Low THD+N: 0.1% at 1W, 1kHz
• Low quiescent current: 4mA
• Short-circuit protection
• Thermal shutdown protection
• Over-current protection
• Under-voltage lockout (UVLO)
• Available in a compact TSSOP-20 package

Benefits:

• Extended battery life: The Class D operation significantly reduces power consumption, extending the battery life of portable devices.
• High-quality audio: Delivers clear and crisp audio output with low distortion.
• Robust protection: Built-in protection features ensure the amplifier's reliability and prevent damage from various fault conditions.
• Compact size: The small package size makes it suitable for space-constrained applications.
• Ease of use: Simple external component requirements simplify the design process.

Additional Details:

The HT4863MTE features a shutdown mode that further reduces power consumption when the amplifier is not in use. The Class AB mode provides a more traditional amplifier performance, while the Class D mode offers higher efficiency. Switching between the modes allows for optimization of power consumption and audio quality based on the specific application requirements. It operates from a supply voltage range of 2.5V to 5.5V.