HT8691

Class D Audio Amplifier

Copyright ©2016, Jiaxing Heroic Technology Co., Ltd

-13-

11/2016 – V0.1

thermal protection mode, the differential output terminal becomes Weak Low state (a state grounded through

high impedance).

(3) Low voltage Malfunction Prevention function

This is the function to establish the low voltage protection mode when PVDD terminal voltage becomes lower

than the detection voltage (VUVLL) for the low voltage malfunction prevention. And the protection mode is

canceled when PVDD terminal voltage becomes higher than the threshold voltage (VUVLH). In the low voltage

protection mode, the differential output pin becomes Weak Low state (a state grounded through high impedance).

HT8691 will start up within the start-up time (TSTUP) when the low voltage protection mode is cancelled