ft3129耐压26V **低功耗-高效率-大功率-ALC功能-抑制pop音功放

   The ft3129 is a high-power, high-efficiency, Class-D stereo audio power amplifier with adjustable power limit (APL) and automatic level control (ALC). It operates with a wide range of supply voltages from 5V to 26V. With a supply voltage at 24V, it can deliver a peak output power of 2 X 40W at 10% THD+N, into a pair of 8Ω speakers. 

   The high efficiency of ft3129 extends battery life in playing music and allows it to deliver an output power of 2 X 20W without the need for a bulky heat sink on a two-layer system board. Its high PSRR and low EMI emissions reduce system design and manufacturing complexities and lower system cost. 

   The ft3129 features APL and ALC function. The APL hard-clamps peak audio outputs to a user-defined value to protect audio speakers from excessive power dissipation or over-load. The ALC adjusts the voltage gain of both audio amplifiers together in response to a user-defined over-limit condition in either channel of audio outputs, largely eliminating output clipping while maintaining a maximally allowed dynamic range of audio outputs. The limiting voltage of APL and ALC can be either a user-defined value or the supply voltage. 

   The ft3129 can be configured into driving either a pair of speakers in Bridge-Tied-Load (BTL) configuration for stereo applications or a single speaker in Parallel BTL (PBTL) configuration for mono applications. 

   The ft3129 features two PWM modulation schemes for use in Class-D audio amplifiers: Dual-Side-Modulation (*) and Single-Side-Modulation (SSM).  

   In ft3129, comprehensive protection modes against various operating faults ensure its safe and reliable operation.