HAA9802 Description
    The HAA9802 is a capacitive boost, crack-proof, Class AB/D switchable mono audio power amplifier that provides up to 5.4W continuous output power for 4Ω loads.
    HAA9802 built-in unique anti-crack function, can automatically adjust the power amplifier gain according to the size of the output signal, prevent the output clipping distortion, to achieve a more comfortable hearing experience, HAA9802 also has a dynamic boost function, when the input signal is very small charge pump does not boost the voltage, for the through mode to reduce power consumption and improve efficiency; Charge pump boost is started when the input signal is large and a larger dynamic range is needed to achieve a perfect balance between efficiency and output power.
    HAA9802's fully differential input architecture and extremely high PSRR effectively improve HAA9802's ability to suppress RF noise.
    The HAA9802 has a very low turn-off current, greatly extending the standby time of the system. The OCP, OTP, and UVLO protection functions enhance system reliability. Turning POP-click suppression on and off improves the auditory perception of the system and simplifies system debugging.
    The HAA9802 is available in an ESOP10L package with heat sink

HAA9802 Operating characteristics:
HAA9802 is a class AB and Class D switching function

  4 kinds of anti-crack sound can be selected
  Adaptive boost function, Charge_pump boost to 6.6V
  Class D output power:

        －5.4W (VDD=4.5V, RL =4Ω，NCN OFF THD+N=10%)

        －5.2W (VDD=4.2V, RL =4Ω，NCN OFF THD+N=10%)

Class AB output power:

        －2W (VDD=4.2V, RL =4Ω，升压关闭 THD+N=10%)

Operating voltage: 2.8V to 5.5V
Low distortion and noise
Enable or disable the POP-click suppression function
Turn-off current (<1uA)
OCP, OTP, and UVLO protection functions
The HAA9802 is available in an ESOP10L package with heat sink

HAA9802 application
megaphone
Portable speaker/card speaker
Bluetooth speaker/AI speaker

HAA9202 Ordering Information:

HAA9802

ESOP10L

HAA9802 XXXXXXX

4000 PCS/roll

HAA9802 Typical application circuit diagram

HAA9802 power amplifier pin position map

HAA9802 Pin definition:

HAA9802 package diagram: