IS31AP2110

IS31AP2110 20W STEREO CLASS-D AUDIO AMPLIFIER WITH POWER LIMIT AND DYNAMIC TEMPERATURE CONTROL November 2015 GENERAL DESCRIPTION The IS31AP2110 is a high efficiency stereo Class-D audio amplifier with adjustable power limit function and dynamic temperature control. The loudspeaker driver operates from 8~26V supply voltage and analog circuit operates at 3.3V supply voltage. It can deliver 20W/CH output power into 8 loudspeaker within 0.2% THD+N and without external heat sink when playing music. IS31AP2110 provides parallel BTL (Mono) application, and it can deliver 40W into 4 loudspeaker within 0.11% THD+N. The adjustable power limit function allows user to set a voltage rail lower than half of 3.3V to limit the amount of current through the speaker. Output DC detection prevents speaker damage from long-time current stress. The dynamic temperature control is a gain control system. As chip junction temperature higher than a warning level, the gain level will decrease until junction temperature lower than the warning level. The output short circuit and over temperature protection include auto-recovery feature. The IS31AP2110 is available in a thermally enhanced eTSSOP-28 package. FEATURES  Single supply voltage - 8V ~ 26V for loudspeaker driver - Built-in LDO output 3.3V for others  Loudspeaker power from 24V supply - BTL Mode: 20W/CH into 8Ω @0.2% THD+N - PBTL Mode: 40W/CH into 4Ω @0.11% THD+N  Loudspeaker power from 13V supply - BTL Mode: 10W/CH into 8Ω @10% THD+N  87...