AW8155B
Jul. 2022 V1.3
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COPYRIGHT ©2022 SHANGHAI AWINIC TECHNOLOGY CO. LTD.
Pop-Click Suppression
The AW8155B features unique timing control circuit, that comprehensively suppresses pop-click noise, elim-
inates audible transients on shutdown, wakeup, and power-up/down.
Efficiency
Efficiency of a Class D amplifier is attributed to the switching operation of the output stage transistors. In a
Class D amplifier, the output transistors act as current steering switches and consume negligible additional
power. Any power loss associated with the Class D output stage is mostly due to the I2R loss of the MOSFET
on-resistance and supply current. The AW8155B features efficiency of 91%.
Protection Function
When a short-circuit occurs between VOP/VON pin and VDD/GND or VOP and VON, the over-current circuit
shutdown the device, preventing the device from being damaged. When the condition is removed, the
AW8155B reactivate itself. When the junction temperature is high, the over-temperature circuit shutdown the
device. The circuit switches back to normal operation when the temperature decreases to safe levels.
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